Method and apparatus for setting 2x EHT-STF sequences for wideband in wireless LAN systems - Patents.com

Abstract

A method and apparatus for receiving a PPDU in a wireless LAN system are proposed. Specifically, a receiving STA receives a PPDU from a transmitting STA via a wideband and decodes the PPDU. The PPDU includes an STF signal. The STF signal is generated based on a first STF sequence for the wideband. When the wideband is a 320 MHz band, the first STF sequence is defined as {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 M 1 -M 0 M -1 M -1 M 0 -M 1 M 1 -M 0 M -1 M -1 M 0 -M 1 M 1 -M 0 M -1 M -1 M 0 -M 1 M 1 -M 0 M -1 M -1 M} * (1 + j) / sqrt (2), which includes an M sequence.

Description

[Technical Field]

[0001] This specification relates to a technology for receiving PPDUs over a wideband in a wireless LAN system, and more particularly to a method and apparatus for proposing an STF sequence that can obtain an optimized PAPR taking into account RU or MRU. [Background technology]

[0002] WLAN (wireless local area network) has been improved in various ways, for example, the IEEE 802.11ax standard proposed an improved communication environment using OFDMA (orthogonal frequency division multiple access) and DL MU MIMO (downlink multi-user multiple input, multiple output) technologies.

[0003] This specification proposes technical features that can be utilized in a new communication standard. For example, the new communication standard is the recently discussed Extreme High Throughput (EHT) standard. The EHT standard can use newly proposed increased bandwidth, improved PHY layer protocol data unit (PPDU) structure, improved sequencing, and Hybrid Automatic Repeat Request (HARQ) technology. The EHT standard can be referred to as the IEEE 802.11be standard.

[0004] New WLAN standards will use an increased number of spatial streams, which requires improved signaling techniques within WLAN systems to properly utilize the increased number of spatial streams. Summary of the Invention [Problem to be solved by the invention]

[0005] This specification proposes a method and apparatus for configuring 2x EHT-STF sequences for wideband in a wireless LAN system. [Means for solving the problem]

[0006] An example of this specification proposes a method for receiving PPDUs over a wideband.

[0007] This embodiment is implemented in a network environment supporting a next-generation wireless LAN system (IEEE 802.11be or EHT wireless LAN system), which is an improved version of the 802.11ax system and can achieve backward compatibility with the 802.11ax system.

[0008] This embodiment proposes a method for configuring a 2x STF sequence that is mapped to an RU or MRU (Multi-RU) when transmitting a TB PPDU via a wideband (240 MHz or 320 MHz).

[0009] A receiving station (STA) receives a PPDU (Physical Protocol Data Unit) from a transmitting station via a broadband.

[0010] The receiving STA decodes the PPDU.

[0011] The PPDU includes a Short Training Field (STF) signal.

[0012] The STF signal is generated based on a first STF sequence for the wideband.

[0013] When the wideband is a 320 MHz band, the first STF sequence is defined as a sequence including an M sequence as follows:

[0014] {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0015] In this case, sqrt() represents the square root.

[0016] The M sequence is defined as follows: The M sequence is the same as the M sequence defined in the 802.11ax WLAN system.

[0017] M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1} [Effects of the Invention]

[0018] According to the embodiment proposed in this specification, when transmitting a TB PPDU over a wideband, a new effect of optimizing PAPR can be achieved by proposing an EHT-STF sequence taking into account various RUs or MRUs defined in an 802.11be WLAN system, thereby enabling estimation of subcarrier efficiency and effective automatic gain control (AGC). [Brief explanation of the drawings]

[0019] [Figure 1] 1 illustrates an example of a transmitting device and / or a receiving device of the present specification. [Figure 2] FIG. 1 is a conceptual diagram showing the structure of a wireless LAN (WLAN). [Figure 3] 1 is a diagram illustrating a typical link setup process. [Figure 4] 1 is a diagram showing an example of a PPDU used in the IEEE standard. [Figure 5]1 is a diagram showing the arrangement of resource units (RUs) used on a 20 MHz band. [Figure 6] 1 is a diagram showing the arrangement of resource units (RUs) used on a 40 MHz band. [Figure 7] 1 is a diagram showing the arrangement of resource units (RUs) used on an 80 MHz band. [Figure 8] The structure of the HE-SIG-B field is shown below. [Figure 9] 1 shows an example in which multiple User STAs are assigned to the same RU via MU-MIMO technology. [Figure 10] The operation related to UL-MU is shown. [Figure 11] 1 shows an example of a trigger frame. [Figure 12] 1 shows an example of a common information field of a trigger frame. [Figure 13] An example of subfields included in the per user information field is shown below. [Figure 14] Explain the technical features of UORA technology. [Figure 15] Examples of channels used / supported / defined within the 2.4 GHz band are shown below. [Figure 16] An example of channels used / supported / defined within the 5GHz band is shown below. [Figure 17] Examples of channels used / supported / defined within the 6GHz band are shown below. [Figure 18] 1 shows an example of a PPDU used in this specification. [Figure 19] 10 illustrates a variation of the transmitting device and / or receiving device of the present specification. [Figure 20] 10 illustrates an example of 2x HE-STF tones in PPDU transmission for each channel according to the present embodiment. [Figure 21] This is a diagram showing a combination of 26+52RU in an 80MHz band tone plan. [Figure 22]FIG. 4 is a procedure flow diagram showing the operation of the transmitting device according to the present embodiment. [Figure 23] FIG. 4 is a procedure flow diagram showing the operation of the receiving device according to the present embodiment. [Figure 24] 10 is a flow diagram showing a procedure for a transmitting STA to transmit a PPDU according to the present embodiment. [Figure 25] 10 is a flowchart showing a procedure for a receiving STA to receive a PPDU according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] As used herein, "A or B" can mean "only A," "only B," or "both A and B." Also, as used herein, "A or B" can be interpreted as "A and / or B." For example, as used herein, "A, B or C" can mean "only A," "only B," "only C," or "any combination of A, B, and C."

[0021] As used herein, a slash ( / ) or a comma can mean "and / or." For example, "A / B" can mean "A and / or B." Thus, "A / B" can mean "only A," "only B," or "both A and B." For example, "A, B, C" can mean "A, B, or C."

[0022] As used herein, "at least one of A and B" can mean "only A," "only B," or "both A and B." Additionally, as used herein, the expressions "at least one of A or B" and "at least one of A and / or B" can be interpreted in the same way as "at least one of A and B."

[0023] Furthermore, in this specification, "at least one of A, B and C" can mean "only A," "only B," "only C," or "any combination of A, B and C." Furthermore, "at least one of A, B or C" or "at least one of A, B and / or C" can mean "at least one of A, B and C."

[0024] Furthermore, parentheses used in this specification may mean "for example." Specifically, when "control information (PDCCH)" is used, "PDCCH" is proposed as an example of "control information." Furthermore, "control information" in this specification is not limited to "PDCCH," and "PDDCH" is proposed as an example of "control information." Furthermore, when "control information (i.e., PDCCH)" is used, "PDCCH" is proposed as an example of "control information."

[0025] In this specification, technical features individually described in one drawing may be embodied individually or simultaneously.

[0026] The following examples of the present specification apply to various wireless communication systems. For example, the following examples of the present specification apply to wireless local area network (WLAN) systems. For example, the present specification applies to the IEEE 802.11a / g / n / ac standards and the IEEE 802.11ax standard. The present specification also applies to the newly proposed EHT standard or the IEEE 802.11be standard. The present specification also applies to new WLAN standards that are enhancements of the EHT standard or the IEEE 802.11be. The present specification also applies to mobile communication systems. For example, the present specification applies to mobile communication systems based on LTE (Long Term Evolution) and its evolutions, which are based on the 3GPP (3rd Generation Partnership Project) standard. The present specification also applies to a 5GNR (5G Radio Frequency) communication system based on the 3GPP standard.

[0027] In the following, in order to explain the technical features of this specification, the technical features to which this specification is applied will be explained.

[0028] FIG. 1 shows an example of a transmitting device and / or a receiving device of this specification.

[0029] The example of Figure 1 can implement various technical features described below. Figure 1 relates to at least one STA (station). For example, the STAs (110, 120) herein may be referred to by various names such as a mobile terminal, wireless device, wireless transmit / receive unit (WTRU), user equipment (UE), mobile station (MS), mobile subscriber unit, or simply user. The STAs (110, 120) herein may be referred to by various names such as a network, base station, Node-B, access point (AP), repeater, router, relay, etc. The STAs (110, 120) herein may be referred to by various names such as a receiving device, transmitting device, receiving STA, transmitting STA, receiving device, transmitting device, etc.

[0030] For example, the STAs (110, 120) can perform either an AP (Access Point) role or a non-AP role. That is, the STAs (110, 120) in this specification can perform the functions of an AP and / or a non-AP. In this specification, an AP can also be referred to as an AP STA.

[0031] The STAs (110, 120) of this specification can support various communication standards other than the IEEE 802.11 standard. For example, they can support communication standards related to the 3GPP standard (e.g., LTE, LTE-A, 5GNR standard). In addition, the STAs of this specification can be implemented in various devices such as mobile phones, vehicles, and personal computers. In addition, the STAs of this specification can support communication for various communication services such as voice calls, video calls, data communications, and self-driving and autonomous driving.

[0032] As used herein, the STAs (110, 120) may include a medium access control (MAC) and physical layer interface to the wireless medium as defined by the IEEE 802.11 standard.

[0033] The STAs (110, 120) will be described below based on FIG. 1(a).

[0034] The first STA 110 includes a processor 111, a memory 112, and a transceiver 113. The illustrated processor, memory, and transceiver may each be implemented as a separate chip, or at least two or more blocks / functions may be implemented on a single chip.

[0035] The transceiver (113) of the first STA performs signal transmission and reception operations, specifically, it can transmit and receive IEEE 802.11 packets (for example, IEEE 802.11a / b / g / n / ac / ax / be, etc.).

[0036] For example, the first STA (110) can perform the intended operations of the AP. For example, the processor (111) of the AP can receive signals via the transceiver (113), process the received signals, generate transmit signals, and perform control for signal transmission. The memory (112) of the AP can store signals received via the transceiver (113) (i.e., received signals) and can store signals to be transmitted via the transceiver (i.e., transmit signals).

[0037] For example, the second STA (120) can perform the intended operations of a non-AP STA. For example, the non-AP transceiver (123) can transmit and receive signals. Specifically, it can transmit and receive IEEE 802.11 packets (e.g., IEEE 802.11a / b / g / n / ac / ax / be, etc.).

[0038] For example, the processor (121) of the non-AP STA can receive signals via the transceiver (123), process the received signals, generate transmission signals, and perform control for signal transmission. The memory (122) of the non-AP STA can store signals received via the transceiver (123) (i.e., received signals) and can store signals to be transmitted via the transceiver (i.e., transmitted signals).

[0039] For example, in the following specification, the operation of the device designated as AP is performed in the first STA (110) or the second STA (120). For example, if the first STA (110) is an AP, the operation of the device designated as AP is controlled by a processor (111) of the first STA (110), and related signals are transmitted or received via a transceiver (113) controlled by the processor (111) of the first STA (110). Control information related to the operation of the AP and transmitted / received signals of the AP are stored in a memory (112) of the first STA (110). If the second STA (110) is an AP, the operation of the device designated as AP is controlled by a processor (121) of the second STA (120), and related signals are transmitted or received via a transceiver (123) controlled by the processor (121) of the second STA (120). Control information related to the operation of the AP and transmitted / received signals of the AP are stored in a memory (122) of the second STA (110).

[0040] For example, in the following specification, the operation of a device designated as non-AP (or User-STA) is performed in the first STA (110) or the second STA (120). For example, if the second STA (120) is a non-AP, the operation of the device designated as non-AP is controlled by the processor (121) of the second STA (120), and related signals are transmitted or received via the transceiver (123) controlled by the processor (121) of the second STA (120). In addition, control information related to the operation of the non-AP and AP transmission / reception signals are stored in the memory (122) of the second STA (120). For example, if the first STA (110) is a non-AP, the operation of the device designated as non-AP is controlled by the processor (111) of the first STA (110), and related signals are transmitted or received via the transceiver (113) controlled by the processor (111) of the first STA (120). In addition, control information related to the operation of the non-AP and transmission / reception signals of the AP are stored in the memory (112) of the first STA (110).

[0041] In the following specification, devices referred to as a (transmitting / receiving) STA, first STA, second STA, STA1, STA2, AP, first AP, second AP, AP1, AP2, (transmitting / receiving) terminal, (transmitting / receiving) device, (transmitting / receiving) apparatus, network, etc. refer to the STAs (110, 120) in Figure 1. For example, devices referred to as a (transmitting / receiving) STA, first STA, second STA, STA1, STA2, AP, first AP, second AP, AP1, AP2, (transmitting / receiving) terminal, (transmitting / receiving) device, (transmitting / receiving) apparatus, network, etc. without specific reference numerals also refer to the STAs (110, 120) in Figure 1. For example, in the following example, operations by various STAs to transmit and receive signals (e.g., PPPDUs) may be performed in transceivers (113, 123) in Figure 1. Also, in the following example, operations in which various STAs generate transmission / reception signals or perform data processing or calculations in advance for transmission / reception signals may be executed by the processors (111, 121) in Fig. 1. For example, examples of operations in which various STAs generate transmission / reception signals or perform data processing or calculations in advance for transmission / reception signals may include: 1) operations of determining / acquiring / configuring / calculating / decoding / encoding bit information of subfields (SIG, STF, LTF, Data) included in a PPDU, 2) operations of determining / configuring / acquiring time resources and frequency resources (e.g., subcarrier resources) used for the subfields (SIG, STF, LTF, Data) included in a PPDU, 3) operations of determining / configuring / acquiring specific sequences (e.g., pilot sequences, STF / LTF sequences, extra sequences applied to SIG) used for the subfields (SIG, STF, LTF, Data) included in a PPDU, 4) power control operations and / or power saving operations applied to the STAs, and 5) operations related to determining / acquiring / configuring / calculating / decoding / encoding an ACK signal.Also, in the following example, various information (e.g., information related to fields / subfields / control fields / parameters / power, etc.) used by various STAs to determine / acquire / configure / calculate / decode / encode transmitted / received signals is stored in memories (112, 122) of FIG. 1.

[0042] The device / STA of Fig. 1(a) described above is modified as shown in Fig. 1(b). The STAs (110, 120) of this specification will be described based on Fig. 1(b) below.

[0043] For example, the transceivers (113, 123) shown in FIG. 1(b) may perform the same functions as the transceivers shown in FIG. 1(a) described above. For example, the processing chips (114, 124) shown in FIG. 1(b) may include processors (111, 121) and memories (112, 122). The processors (111, 121) and memories (112, 122) shown in FIG. 1(b) may perform the same functions as the processors (111, 121) and memories (112, 122) shown in FIG. 1(a) described above.

[0044] In the following description, the terms mobile terminal, wireless device, wireless transmit / receive unit (WTRU), user equipment (UE), mobile station (MS), mobile subscriber unit, user, user STA, network, base station, Node-B, access point (AP), repeater, router, relay, receiving device, transmitting device, receiving STA, transmitting STA, receiving device, transmitting device, receiving apparatus, and / or transmitting apparatus refer to the STAs (110, 120) shown in FIG. 1(a) / (b) or the processing chips (114, 124) shown in FIG. 1(b). In other words, the technical features of this specification may be performed by the STAs (110, 120) shown in FIG. 1(a) / (b), or may be performed only by the processing chips (114, 124) shown in FIG. 1(b). For example, the technical feature of the transmitting STA transmitting a control signal can be understood as the technical feature of the control signal generated in the processor (111, 121) shown in Figure 1(a) / (b) being transmitted via the transceiver (113, 123) shown in Figure 1(a) / (b). Alternatively, the technical feature of the transmitting STA transmitting a control signal can be understood as the technical feature of the control signal being generated in the processing chip (114, 124) shown in Figure 1(b) and transmitted to the transceiver (113, 123).

[0045] For example, the technical feature of the receiving STA receiving the control signal can be understood as the technical feature of the control signal being received by the transceiver (113, 123) shown in Fig. 1(a). Alternatively, the technical feature of the receiving STA receiving the control signal can be understood as the technical feature of the control signal received by the transceiver (113, 123) shown in Fig. 1(a) being acquired by the processor (111, 121) shown in Fig. 1(a). Alternatively, the technical feature of the receiving STA receiving the control signal can be understood as the technical feature of the control signal received by the transceiver (113, 123) shown in Fig. 1(b) being acquired by the processing chip (114, 124) shown in Fig. 1(b).

[0046] Referring to Figure 1(b), software code (115, 125) is contained within memory (112, 122). The software code (115, 125) contains instructions that control the operation of the processor (111, 121). The software code (115, 125) may be contained in a variety of programming languages.

[0047] The processors (111, 121) or processing chips (114, 124) shown in FIG. 1 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits, and / or data processing devices. The processors are application processors (APs). For example, the processors (111, 121) or processing chips (114, 124) shown in FIG. 1 may include at least one of a digital signal processor (DSP), a central processing unit (CPU), a graphics processing unit (GPU), and a modem (modulator and demodulator). For example, the processors (111, 121) or processing chips (114, 124) shown in FIG. 1 may include a SNAPDRAGON (Smartphone) manufactured by Qualcomm®. TMEXYNOS series processor, manufactured by Samsung® TM Series processors, A-series processors manufactured by Apple®, HELIO manufactured by MediaTek® TM ATOM series processors, manufactured by INTEL® TM It is a series processor or an enhanced version of it.

[0048] In this specification, an uplink refers to a link for communication from a non-AP STA to an AP STA, and uplink PPDUs / packets / signals, etc. are transmitted via the uplink. Also, in this specification, a downlink refers to a link for communication from an AP STA to a non-AP STA, and downlink PPDUs / packets / signals, etc. are transmitted via the downlink.

[0049] FIG. 2 is a conceptual diagram showing the structure of a wireless LAN (WLAN).

[0050] The top part of Figure 2 shows the structure of an IEEE (Institute of Electrical and Electronic Engineers) 802.11 infrastructure BSS (basic service set).

[0051] Referring to the top of Figure 2, a wireless LAN system can include one or more infrastructure BSSs (200, 205) (hereinafter referred to as BSS). A BSS (200, 205) is a set of APs and STAs, such as an access point (AP, 225) and a station (STA1, 200-1), that can properly synchronize and communicate with each other, and does not refer to a specific area. A BSS (205) can include one AP (230) and one or more STAs (205-1, 205-2) that can join the BSS.

[0052] The BSS can include at least one STA, APs (225, 230) that provide a distribution service, and a distribution system (DS, 210) that connects multiple APs.

[0053] The distribution system (210) can implement an extended service set (ESS, 240) by connecting multiple BSSs (200, 205). The term ESS (240) is used to refer to a network formed by connecting one or more APs via the distribution system (210). APs included in one ESS (240) have the same service set identification (SSID).

[0054] The portal (portal 220) can act as a bridge that connects a wireless LAN network (IEEE 802.11) to other networks (e.g., 802.X).

[0055] In the BSS shown at the top of Figure 2, a network between APs (225, 230) and a network between APs (225, 230) and STAs (200-1, 205-1, 205-2) are implemented. However, it is also possible to set up a network between STAs without APs (225, 230) and communicate between them. A network that sets up a network between STAs without APs (225, 230) and communicates between them is defined as an ad-hoc network or independent basic service set (IBSS).

[0056] The bottom part of Figure 2 is a conceptual diagram showing the IBSS.

[0057] Referring to the bottom of Figure 2, an IBSS is a BSS that operates in ad-hoc mode. Since an IBSS does not include an AP, there is no centralized management entity that performs management functions. That is, in an IBSS, STAs (250-1, 250-2, 250-3, 255-4, 255-5) are managed in a distributed manner. In an IBSS, all STAs (250-1, 250-2, 250-3, 255-4, 255-5) are mobile STAs, and are not allowed to connect to a distribution system, forming a self-contained network.

[0058] FIG. 3 is a diagram illustrating a typical link setup process.

[0059] In step S310, the STA can perform a network discovery operation. The network discovery operation can include the STA's scanning operation. In other words, the STA needs to find a joinable network in order to access the network. Before joining a wireless network, the STA needs to identify a compatible network. The process of identifying networks present in a specific area is called scanning. There are two scanning methods: active scanning and passive scanning.

[0060] FIG. 3 illustrates an example of a network discovery process that includes an active scanning process. In active scanning, a scanning STA moves between channels, transmits a probe request frame to search for nearby APs, and waits for a response. The responder transmits a probe response frame to the STA that transmitted the probe request frame in response to the probe request frame. Here, the responder is the STA that last transmitted a beacon frame in the BSS of the channel being scanned. In a BSS, the AP transmits the beacon frame, so the responder is the AP. In an IBSS, the responder is not fixed because STAs within the IBSS return and transmit beacon frames. For example, a STA that transmits a probe request frame on channel 1 and receives a probe response frame on channel 1 can store BSS-related information included in the received probe response frame, move to the next channel (e.g., channel 2), and perform scanning in the same manner (i.e., transmit and receive probe request / response on channel 2).

[0061] Although not shown as an example in FIG. 3, scanning operations may also be performed using a passive scanning method. STAs performing scanning based on passive scanning can move between channels and wait for beacon frames. Beacon frames are a type of management frame in IEEE 802.11 that are periodically transmitted to notify the existence of a wireless network and allow scanning STAs to find and join the wireless network. In a BSS, the AP periodically transmits beacon frames, and in an IBSS, STAs within the IBSS return and transmit beacon frames. When a scanning STA receives a beacon frame, it stores information about the BSS contained in the beacon frame and records beacon frame information on each channel as it moves to other channels. A STA that receives a beacon frame stores BSS-related information contained in the received beacon frame, moves to the next channel, and performs scanning on the next channel in the same manner.

[0062] An STA that has discovered a network can perform an authentication process through step S320. This authentication process is called the first authentication process to clearly distinguish it from the security setup operation in step S340, which will be described later. The authentication process in S320 may include a process in which the STA transmits an authentication request frame to the AP, and in response, the AP transmits an authentication response frame to the STA. The authentication frame used for the authentication request / response corresponds to a management frame.

[0063] The authentication frame can include information on the authentication algorithm number, authentication transaction sequence number, status code, challenge text, RSN (Robust Security Network), Finite Cyclic Group, etc.

[0064] The STA can send an authentication request frame to the AP. The AP can determine whether to allow authentication for the STA based on the information contained in the received authentication request frame. The AP can provide the STA with the result of the authentication process via an authentication response frame.

[0065] A successfully authenticated STA can perform an association process according to step S330. The association process includes the STA transmitting an association request frame to the AP, and the AP transmitting an association response frame to the STA in response. For example, the association request frame can include various capability-related information, such as a beacon listen interval, a service set identifier (SSID), supported rates, supported channels, an RSN, a mobility domain, supported operating classes, a Traffic Indication Map Broadcast request, and information regarding interworking service capabilities. For example, the connection response frame may include information related to various capabilities, a status code, an association ID (AID), supported rates, an Enhanced Distributed Channel Access (EDCA) parameter set, a received channel power indicator (RCPI), a received signal to noise indicator (RSNI), a mobility domain, a timeout interval (association comeback time), overlapping BSS scan parameters, a TIM broadcast response, a QoS map, and other information.

[0066] Thereafter, the STA may perform a security setup process in step S340. The security setup process in step S340 may include, for example, a private key setup process via a four-way handshake using an Extesible Authentication Protocol over LAN (EAPOL) frame.

[0067] FIG. 4 is a diagram showing an example of a PPDU used in the IEEE standard.

[0068] As shown, various types of PPDUs (PHY protocol data units) are used in standards such as IEEEa / g / n / ac. Specifically, the LTF and STF fields contain training signals, SIG-A and SIG-B contain control information for the receiving station, and the data field contains user data corresponding to the PSDU (MAC PDU / Aggregated MAC PDU).

[0069] 4 also includes an example of an HE PPDU of the IEEE 802.11ax standard. The HE PPDU shown in FIG. 4 is an example of a PPDU for multiple users, and the HE-SIG-B is included only for multiple users, and the corresponding HE-SIG-B is omitted for a PPDU for a single user.

[0070] As shown, an HE-PPDU for multiple users (MUs) can include a legacy-short training field (L-STF), a legacy-long training field (L-LTF), a legacy signal (L-SIG), a high efficiency signal A (HE-SIG-A), a high efficiency signal B (HE-SIG-B), a high efficiency-short training field (HE-STF), a high efficiency-long training field (HE-LTF), a data field (or MAC payload), and a Packet Extension (PE) field. Each field is transmitted during the indicated time interval (e.g., 4 or 8 μs).

[0071] The resource unit (RU) used in the PPDU is described below. A resource unit can include multiple subcarriers (or tones). A resource unit is used when transmitting signals to multiple STAs based on OFDMA technology. A resource unit is also defined when transmitting a signal to a single STA. A resource unit is used for the STF, LTF, data field, etc.

[0072] FIG. 5 is a diagram showing the allocation of resource units (RUs) used on a 20 MHz band.

[0073] As shown in Figure 5, some fields of the HE-PPDU may be configured using resource units (RUs) corresponding to different numbers of tones (i.e., subcarriers). For example, resources are allocated in units of the indicated RUs to the HE-STF, HE-LTF, and data fields.

[0074] As shown at the top of Figure 5, 26 units (i.e., units corresponding to 26 tones) are allocated. Six tones are used as a guard band in the leftmost band of the 20 MHz band, and five tones are used as a guard band in the rightmost band of the 20 MHz band. Seven DC tones are inserted in the center band, i.e., the DC band, and there may be 26 units corresponding to 13 tones on each side of the DC band. 26 units, 52 units, and 106 units are allocated to other bands. Each unit is allocated for a receiving station, i.e., a user.

[0075] On the other hand, the RU arrangement of Figure 5 can be utilized not only in a multiple user (MU) situation but also in a single user (SU) situation, in which case one 242 unit can be used as shown at the bottom of Figure 5, and in this case three DC tones are inserted.

[0076] In the example of Figure 5, various sizes of RUs are proposed, i.e., 26RU, 52RU, 106RU, 242RU, etc., and the specific sizes of such RUs may be expanded or increased, so this embodiment is not limited to the specific size of each RU (i.e., the number of corresponding tones).

[0077] FIG. 6 is a diagram showing the allocation of resource units (RUs) used on the 40 MHz band.

[0078] Just as various sizes of RUs are used in the example of Figure 5, the example of Figure 6 also uses 26RU, 52RU, 106RU, 242RU, 484RU, etc. Also, five DC tones are inserted at the center frequency, 12 tones are used as a guard band in the leftmost band of the 40 MHz band, and 11 tones are used as a guard band in the rightmost band of the 40 MHz band.

[0079] Also, as shown, when used for a single user, 484 RUs can be used, while the specific number of RUs can be changed, as in the example of FIG.

[0080] FIG. 7 is a diagram showing the allocation of resource units (RUs) used on the 80 MHz band.

[0081] Just as various sizes of RUs are used in the examples of Figures 5 and 6, the example of Figure 7 can also use 26RU, 52RU, 106RU, 242RU, 484RU, 996RU, etc. In addition, seven DC tones are inserted at the center frequency, 12 tones are used as a guard band in the leftmost band of the 80 MHz band, and 11 tones are used as a guard band in the rightmost band of the 80 MHz band. In addition, 26RUs using 13 tones on each side of the DC band can be used.

[0082] Also, as shown, 996 RUs are available when used for a single user, in which case five DC tones are inserted.

[0083] The RUs described herein are used for UL (Uplink) communication and DL (Downlink) communication. For example, when UL-MU communication solicited by a Trigger frame is performed, a transmitting STA (e.g., AP) can assign a first RU (e.g., 26 / 52 / 106 / 242 RU, etc.) to a first STA and a second RU (e.g., 26 / 52 / 106 / 242 RU, etc.) to a second STA via the Trigger frame. Thereafter, the first STA can transmit a first Trigger-Based PPDU based on the first RU, and the second STA can transmit a second Trigger-Based PPDU based on the second RU. The first and second Trigger-Based PPDUs are transmitted to the AP in the same time interval.

[0084] For example, when a DL MU PPDU is configured, the transmitting STA (e.g., AP) can assign a first RU (e.g., 26 / 52 / 106 / 242 RU, etc.) to the first STA and a second RU (e.g., 26 / 52 / 106 / 242 RU, etc.) to the second STA. That is, the transmitting STA (e.g., AP) can transmit the HE-STF, HE-LTF, and Data fields for the first STA via the first RU and the HE-STF, HE-LTF, and Data fields for the second STA via the second RU within one MU PPDU.

[0085] Information about the location of the RU is signaled via HE-SIG-B.

[0086] Figure 8 shows the structure of the HE-SIG-B field.

[0087] As shown, the HE-SIG-B field 810 includes a common field 820 and a user-specific field 830. The common field 820 can contain information that applies to all users (i.e., user STAs) receiving the SIG-B. The user-specific field 830 can be called a user-specific control field. When the SIG-B is transmitted to multiple users, the user-specific field 830 can apply to only some of the users.

[0088] As shown in FIG. 8, the common field (820) and the user specific field (830) can be encoded separately.

[0089] The common field 820 can contain N*8 bits of RU allocation information. For example, the RU allocation information can contain information about the location of the RU. For example, when a 20 MHz channel is used as shown in FIG. 5, the RU allocation information can contain information about which RU (26RU / 52RU / 106RU) is allocated to which frequency band.

[0090] An example of RU allocation information consisting of 8 bits is as follows:

[0091] [Table 1]

[0092] As shown in the example of Figure 5, a maximum of nine 26RUs are allocated to a 20MHz channel. When the RU allocation information in the common field (820) is set to "00000000," as shown in Table 1, nine 26RUs are allocated to the corresponding channel (i.e., 20MHz). Also, when the RU allocation information in the common field (820) is set to "00000001," as shown in Table 1, seven 26RUs and one 52RU are allocated to the corresponding channel. That is, in the example of Figure 5, 52RUs are allocated to the far right, and seven 26RUs are allocated to the left of that.

[0093] The example in Table 1 shows only a portion of the RU locations for which RU allocation information can be displayed.

[0094] For example, the RU allocation information may further include an example of Table 2 below.

[0095] [Table 2]

[0096] "01000y2y1y0" relates to an example in which 106RU is allocated to the left end of a 20MHz channel, and five 26RUs are allocated to the right of it. In this case, a large number of STAs (e.g., User-STAs) are allocated to the 106RU based on MU-MIMO technology. Specifically, a maximum of eight STAs (e.g., User-STAs) are allocated to the 106RU, and the number of STAs (e.g., User-STAs) allocated to the 106RU is determined based on the 3-bit information (y2y1y0). For example, if the 3-bit information (y2y1y0) is set to N, the number of STAs (e.g., User-STAs) allocated to the 106RU based on MU-MIMO technology is N+1.

[0097] Typically, multiple STAs (e.g., User STAs) are assigned to multiple RUs. However, multiple STAs (e.g., User STAs) are assigned to an RU of a certain size (e.g., 106 subcarriers) or more based on MU-MIMO technology.

[0098] As shown in Figure 8, the user-specific field (830) can include multiple user fields. As described above, the number of STAs (e.g., user STAs) allocated to a specific channel is determined based on the RU allocation information in the common field (820). For example, if the RU allocation information in the common field (820) is '00000000', one user STA is allocated to each of the nine 26 RUs (i.e., a total of nine user STAs are allocated). In other words, up to nine user STAs are allocated to a specific channel via OFDMA technology. Also, up to nine user STAs are allocated to a specific channel via non-MU-MIMO technology.

[0099] For example, if the RU allocation is set to "01000y2y1y0", multiple user STAs are allocated to the 106RU located on the left side using MU-MIMO technology, and five user STAs are allocated to the five 26RUs located to the right using non-MU-MIMO technology. This case is embodied by the example shown in Figure 9.

[0100] FIG. 9 shows an example in which multiple user STAs are assigned to the same RU via MU-MIMO technology.

[0101] For example, when RU allocation is set to "01000010" as shown in Figure 9, 106 RUs are allocated to the left end of a specific channel, and five 26 RUs are allocated to the right of that, based on Table 2. In addition, a total of three user STAs are allocated to the 106 RUs via MU-MIMO technology. As a result, a total of eight user STAs are allocated, and therefore the user individual field (830) of HE-SIG-B can include eight user fields.

[0102] The eight user fields are included in the order shown in Figure 9. Also, as shown in Figure 8, two user fields are implemented in one user block field.

[0103] The user fields shown in Figures 8 and 9 are configured based on two formats. That is, the user field related to MU-MIMO technology is configured in a first format, and the user field related to non-MU-MIMO technology is configured in a second format. Referring to the example of Figure 9, user fields 1 to 3 are based on the first format, and user fields 4 to 8 are based on the second format. The first format or the second format can contain bit information of the same length (e.g., 21 bits).

[0104] Each user field can have the same size (for example, 21 bits). For example, the user field of the first format (the format of the MU-MIMO technology) is configured as follows:

[0105] For example, the first bit (e.g., B0-B10) in the User field (i.e., 21 bits) may contain identification information (e.g., STA-ID, partial AID, etc.) of the User STA to which the corresponding User field is assigned. Also, the second bit (e.g., B11-B14) in the User field (i.e., 21 bits) may contain information regarding spatial configuration. Specifically, an example of the second bit (i.e., B11-B14) may be the same as Tables 3 to 4 below.

[0106] [Table 3]

[0107] [Table 4]

[0108] As shown in Table 3 and / or Table 4, the second bit (i.e., B11-B14) may include information regarding the number of spatial streams allocated to multiple user STAs allocated according to the MU-MIMO technology. For example, when three user STAs are allocated to 106RU based on the MU-MIMO technology as shown in FIG. 9, N_user is set to '3', and the values ​​of N_STS[1], N_STS[2], and N_STS[3] are determined accordingly, as shown in Table 3. For example, when the value of the second bit (B11-B14) is '0011', N_STS[1]=4, N_STS[2]=1, and N_STS[3]=1 are set. That is, in the example of FIG. 9, four spatial streams are allocated to user field 1, one spatial stream is allocated to user field 2, and one spatial stream is allocated to user field 3.

[0109] As shown in the examples of Table 3 and / or Table 4, information regarding the number of spatial streams for a user station (User STA) (i.e., the second bits, B11-B14) is composed of 4 bits. Also, the information regarding the number of spatial streams for a user station (User STA) (i.e., the second bits, B11-B14) can support up to 8 spatial streams. Also, the information regarding the number of spatial streams (i.e., the second bits, B11-B14) can support up to 4 spatial streams for one user STA.

[0110] In addition, the third bit (i.e., B15-18) in the User field (i.e., 21 bits) can contain MCS (Modulation and coding scheme) information, which is applied to the data field in the PPDU containing the corresponding SIG-B.

[0111] As used herein, MCS, MCS information, MCS index, MCS field, etc. may be represented as a specific index value. For example, MCS information may be represented as index 0 to index 11. MCS information may include information about a constellation modulation type (e.g., BPSK, QPSK, 16_QAM, 64_QAM, 256_QAM, 1024_QAM, etc.) and information about a code rate (e.g., 1 / 2, 2 / 3, 3 / 4, 5 / 6, etc.). MCS information may exclude information about a channel coding type (e.g., BSS or LDPC).

[0112] Also, the fourth bit (ie, B19) in the User field (ie, 21 bits) is a Reserved field.

[0113] In addition, the fifth bit (i.e., B20) in the User field (i.e., 21 bits) may contain information about the coding type (e.g., BSS or LDPC). That is, the fifth bit (i.e., B20) may contain information about the type of channel coding (e.g., BSS or LDPC) applied to the data field in the PPDU containing the corresponding SIG-B.

[0114] The above example relates to the User field of the first format (the format for MU-MIMO technology). An example of the User field of the second format (the format for non-MU-MIMO technology) is as follows:

[0115] The first bit (e.g., B0-B10) in the User field of the second format may include identification information of the User STA. The second bit (e.g., B11-B13) in the User field of the second format may include information regarding the number of spatial streams applied to the corresponding RU. The third bit (e.g., B14) in the User field of the second format may include information regarding whether a beamforming steering matrix is ​​applied. The fourth bit (e.g., B15-B18) in the User field of the second format may include modulation and coding scheme (MCS) information. The fifth bit (e.g., B19) in the User field of the second format may include information regarding whether dual carrier modulation (DCM) is applied. The sixth bit (i.e., B20) in the User field of the second format may include information regarding the coding type (e.g., BSS or LDPC).

[0116] 10 shows the operation of a UL-MU. As shown, a transmitting STA (e.g., AP) can perform channel access via contending (i.e., backoff operation) and transmit a trigger frame (1030). That is, the transmitting STA (e.g., AP) can transmit a PPDU including a trigger frame (1330). When a PPDU including a trigger frame is received, a trigger-based (TB) PPDU is transmitted after a delay of SIFS.

[0117] The TB PPDUs (1041, 1042) are transmitted in the same time period from multiple STAs (e.g., User STAs) whose AIDs are indicated in the Trigger frame (1030). The ACK frame (1050) for the TB PPDU can be implemented in various forms.

[0118] Specific features of the trigger frame will be described with reference to Figures 11 to 13. When UL-MU communication is used, orthogonal frequency division multiple access (OFDMA) technology or MU MIMO technology is used, or OFDMA and MU MIMO technology are used simultaneously.

[0119] An example of a trigger frame is shown in Figure 11. The trigger frame in Figure 11 allocates resources for uplink MU transmission (Uplink Multiple-User transmission) and is transmitted, for example, from an AP. The trigger frame is composed of a MAC frame and is included in a PPDU.

[0120] Some of the fields shown in Figure 11 may be omitted, others may be added, and the length of each field may vary from that shown.

[0121] The frame control field (1110) in Figure 11 contains information about the MAC protocol version and other additional control information, and the duration field (1120) contains information about the time information for NAV setting and the STA identifier (e.g., AID).

[0122] In addition, the RA field (1130) contains address information of the STA receiving the corresponding trigger frame, and may be omitted if necessary. The TA field (1140) contains address information of the STA (e.g., AP) transmitting the corresponding trigger frame, and the common information field (1150) contains common control information applied to the receiving STA receiving the corresponding trigger frame. For example, it includes a field indicating the length of the L-SIG field of the up PPDU transmitted corresponding to the corresponding trigger frame, and information controlling the contents of the SIG-A field (i.e., the HE-SIG-A field) of the up PPDU transmitted corresponding to the corresponding trigger frame. In addition, the common control information includes information regarding the length of the CP of the up PPDU transmitted corresponding to the corresponding trigger frame and information regarding the length of the LTF field.

[0123] It is also preferable to include per user information fields (1160#1 to 1160#N) corresponding to the number of receiving STAs that receive the trigger frame of Figure 11. The per user information fields are also called "assignment fields."

[0124] The trigger frame of FIG. 11 may also include a padding field (1170) and a frame check sequence field (1180).

[0125] Each of the per user information fields (1160#1 to 1160#N) shown in FIG. 11 can again include multiple subfields.

[0126] Figure 12 shows an example of the common information field of a trigger frame. Some of the subfields in Figure 12 may be omitted, and other subfields may be added. Also, the length of each of the subfields shown may vary.

[0127] The indicated length field (1210) has the same value as the length field of the L-SIG field of the uplink PPDU transmitted corresponding to the trigger frame, and the length field of the L-SIG field of the uplink PPDU indicates the length of the uplink PPDU. As a result, the length field (1210) of the trigger frame is used to indicate the length of the corresponding uplink PPDU.

[0128] In addition, the cascade indicator field (1220) indicates whether a cascade operation is performed. Cascade operation means that both downlink MU transmission and uplink MU transmission are performed within the same TXOP. In other words, it means that after a downlink MU transmission is performed, uplink MU transmission is performed after a pre-set time (e.g., SIFS). In cascade operation, there may be only one transmitter (e.g., AP) performing downlink communication, and multiple transmitters (e.g., non-APs) performing uplink communication.

[0129] The CS request field (1230) indicates whether or not the receiving device that received the trigger frame needs to consider the state of the wireless medium, NAV, etc. when transmitting the corresponding uplink PPDU.

[0130] The HE-SIG-A information field (1240) contains information that controls the content of the SIG-A field (i.e., the HE-SIG-A field) of the up PPDU transmitted in response to the corresponding trigger frame.

[0131] The CP and LTF type field (1250) can include information about the LTF length and CP length of the up PPDU transmitted corresponding to the trigger frame. The trigger type field (1060) can indicate the purpose for which the trigger frame is used, such as a normal trigger, a trigger for beamforming, or a request for Block ACK / NACK.

[0132] In this specification, it can be assumed that the trigger type field (1260) of the trigger frame indicates a basic type trigger frame for a normal trigger. For example, a basic type trigger frame can be called a basic trigger frame.

[0133] Figure 13 shows an example of subfields included in a per user information field. The user information field (1300) of Figure 13 can be understood as any one of the individual user information fields (1160#1 to 1160#N) mentioned in Figure 11. Some of the subfields included in the user information field (1300) of Figure 13 may be omitted, and other subfields may be added. Also, the length of each of the subfields shown may vary.

[0134] The User Identifier field (1310) in FIG. 13 indicates the identifier of the STA (i.e., the receiving STA) corresponding to the individual user information, and an example of the identifier can be all or part of the AID (Association Identifier) ​​value of the receiving STA.

[0135] Also included is an RU allocation field 1320. That is, when a receiving STA identified in the user identifier field 1310 transmits a TB PPDU corresponding to the trigger frame, the TB PPDU is transmitted via the RU indicated by the RU allocation field 1320. In this case, the RU indicated by the RU allocation field 1320 is the RU shown in Figures 5, 6, and 7.

[0136] The subfields of Figure 13 may include a coding type field 1330. The coding type field 1330 may indicate the coding type of the TB PPDU. For example, if BCC coding is applied to the TB PPDU, the coding type field 1330 is set to '1', and if LDPC coding is applied, the coding type field 1330 is set to '0'.

[0137] 13 may also include an MCS field 1340. The MCS field 1340 may indicate the MCS technique applied to the TB PPDU. For example, if BCC coding is applied to the TB PPDU, the coding type field 1330 is set to '1', and if LDPC coding is applied, the coding type field 1330 is set to '0'.

[0138] The UL OFDMA-based Random Access (UORA) technology will be described below.

[0139] Figure 14 illustrates the technical features of the UORA technology.

[0140] A transmitting STA (e.g., AP) can allocate six RU resources via a trigger frame as shown in Figure 14. Specifically, the AP can allocate the first RU resource (AID 0, RU1), the second RU resource (AID 0, RU2), the third RU resource (AID 0, RU3), the fourth RU resource (AID 2045, RU4), the fifth RU resource (AID 2045, RU5), and the sixth RU resource (AID 3, RU6). Information about AID 0, AID 3, or AID 2045 is included, for example, in the user identification field (1310) of Figure 13. Information about RU 1 to RU 6 is included, for example, in the RU allocation field (1320) of Figure 13. AID = 0 indicates a UORA resource for an associated STA, and AID = 2045 indicates a UORA resource for an unassociated STA. As a result, the first to third RU resources in Figure 14 are used as UORA resources for associated STAs, the fourth to fifth RU resources in Figure 14 are used as UORA resources for un-associated STAs, and the sixth RU resource in Figure 14 is used as a resource for a normal ULMU.

[0141] In the example shown in Figure 14, the OFDMA random access backoff (OBO) counter of STA1 is decremented to 0, and STA1 randomly selects the second RU resource (AID 0, RU2). Since the OBO counters of STA2 / 3 are greater than 0, no uplink resources are allocated to STA2 / 3. Also, in Figure 14, STA4 includes its own AID (i.e., AID=3) in the trigger frame, so RU6 resource is allocated without backoff.

[0142] Specifically, since STA1 in FIG. 14 is an associated STA, there are a total of three eligible RA RUs for STA1 (RU1, RU2, RU3), and as a result, STA1 has decremented its OBO counter by 3, so that the OBO counter is now 0. Also, since STA2 in FIG. 14 is an associated STA, there are a total of three eligible RA RUs for STA2 (RU1, RU2, RU3), and as a result, STA2 has decremented its OBO counter by 3, but the OBO counter is still greater than 0. Also, since STA3 in FIG. 14 is an un-associated STA, there are a total of two eligible RA RUs for STA3 (RU4, RU5), and as a result, STA3 has decremented its OBO counter by 2, so that the OBO counter is still greater than 0.

[0143] Figure 15 shows an example of channels used / supported / defined within the 2.4 GHz band.

[0144] The 2.4 GHz band may be referred to by other names, such as Band 1. The 2.4 GHz band also refers to the frequency range in which channels with center frequencies adjacent to 2.4 GHz (e.g., channels with center frequencies between 2.4 and 2.5 GHz) are used / supported / defined.

[0145] The 2.4 GHz band contains multiple 20 MHz channels. The 20 MHz in the 2.4 GHz band can have multiple channel indices (e.g., index 1 through index 14). For example, the center frequency of a 20 MHz channel assigned channel index 1 is 2.412 GHz, the center frequency of a 20 MHz channel assigned channel index 2 is 2.417 GHz, and the center frequency of a 20 MHz channel assigned channel index N is (2.407 + 0.005 * N) GHz. Channel indices are referred to by various names, such as channel numbers. The specific values ​​of channel indices and center frequencies are subject to change.

[0146] FIG. 15 shows an example of four channels in the 2.4 GHz band. The first to fourth frequency regions (1510, 1540) shown can each include one channel. For example, the first frequency region (1510) can include channel 1 (a 20 MHz channel with index 1). In this case, the center frequency of channel 1 is set to 2412 MHz. The second frequency region (1520) can include channel 6. In this case, the center frequency of channel 6 is set to 2437 MHz. The third frequency region (1530) can include channel 11. In this case, the center frequency of channel 11 is set to 2462 MHz. The fourth frequency region (1540) can include channel 14. In this case, the center frequency of channel 14 is set to 2484 MHz.

[0147] Figure 16 shows an example of channels used / supported / defined within the 5 GHz band.

[0148] The 5 GHz band may be referred to by other names such as the second band or band. The 5 GHz band refers to a frequency range in which channels with center frequencies greater than or equal to 5 GHz and less than 6 GHz (or less than 5.9 GHz) are used / supported / defined. Alternatively, the 5 GHz band may include multiple channels between 4.5 GHz and 5.5 GHz. The specific values ​​shown in Figure 16 are subject to change.

[0149] The multiple channels within the 5 GHz band include UNII (Unlicensed National Information Infrastructure)-1, UNII-2, UNII-3, and ISM. UNII-1 can be called UNII Low. UNII-2 can include frequency regions called UNII Mid and UNII-2 Extended. UNII-3 can be called UNII Upper.

[0150] Within the 5 GHz band, multiple channels are configured, with each channel having a bandwidth of various sizes, such as 20 MHz, 40 MHz, 80 MHz, or 160 MHz. For example, the 5170 MHz to 5330 MHz frequency region / range within UNII-1 and UNII-2 can be divided into eight 20 MHz channels. Within 5170 MHz, the 5330 MHz frequency region / range can be divided into four channels with a 40 MHz frequency region. Within 5170 MHz, the 5330 MHz frequency region / range can be divided into two channels with an 80 MHz frequency region. Alternatively, within 5170 MHz, the 5330 MHz frequency region / range can be divided into one channel with a 160 MHz frequency region.

[0151] Figure 17 shows an example of channels used / supported / defined within the 6 GHz band.

[0152] The 6 GHz band may be referred to by other names such as the third band or band. The 6 GHz band refers to the frequency range in which channels with center frequencies of 5.9 GHz or higher are used / supported / defined. The specific values ​​shown in Figure 17 are subject to change.

[0153] For example, the 20 MHz channels in Figure 17 are defined starting from 5.940 GHz. Specifically, the leftmost channel of the 20 MHz channels in Figure 17 may have an index (or channel index, channel number, etc.) of 1, and is assigned a center frequency of 5.945 GHz. That is, the center frequency of channel index N is determined to be (5.940 + 0.005 * N) GHz.

[0154] As a result, the indices (or channel numbers) of the 20 MHz channels in Figure 17 are 1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57, 61, 65, 69, 73, 77, 81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121, 125, 129, 133, 137, 141, 145, 149, 153, 157, 161, 165, 169, 173, 177, 181, 185, 189, 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, and 233. Also, according to the above-mentioned (5.940+0.005*N) GHz rule, the indices of the 40 MHz channels in Figure 17 are 3, 11, 19, 27, 35, 43, 51, 59, 67, 75, 83, 91, 99, 107, 115, 123, 131, 139, 147, 155, 163, 171, 179, 187, 195, 203, 211, 219, and 227.

[0155] The example in FIG. 17 shows 20, 40, 80, and 160 MHz channels, but 240 MHz and 320 MHz channels are also added.

[0156] The PPDUs transmitted / received in the STAs of this specification are described below.

[0157] FIG. 18 shows an example of a PPDU used in this specification.

[0158] 18 is referred to by various names such as EHT PPDU, transmit PPDU, receive PPDU, first type or Nth type PPDU, etc. For example, in this specification, PPDU or EHT PPDU is referred to by various names such as transmit PPDU, receive PPDU, first type or Nth type PPDU, etc. Furthermore, EHT PPDU is used in EHT systems and / or new wireless LAN systems that are improvements to the EHT system.

[0159] The PPDU in Figure 18 may represent some or all of the PPDU types used in the EHT system. For example, the example in Figure 18 is used for both the single-user (SU) mode and the multi-user (MU) mode. Also, the PPDU in Figure 18 is a PPDU for one receiving STA or multiple receiving STAs. When the PPDU in Figure 18 is used for the trigger-based (TB) mode, the EHT-SIG in Figure 18 is omitted. Also, a STA that receives a trigger frame for uplink-MU (UL-MU) communication can transmit a PPDU in the example in Figure 18 from which the EHT-SIG is omitted.

[0160] In FIG. 18, L-STF to EHT-LTF are called preambles or physical preambles, and are generated / transmitted / received / acquired / decoded in the physical layer.

[0161] The subcarrier spacing of the L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, and EHT-SIG fields in Figure 18 is determined to be 312.5 kHz, and the subcarrier spacing of the EHT-STF, EHT-LTF, and Data fields is determined to be 78.125 kHz. That is, the tone index (or subcarrier index) of the L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, and EHT-SIG fields can be expressed in units of 312.5 kHz, and the tone index (or subcarrier index) of the EHT-STF, EHT-LTF, and Data fields can be expressed in units of 78.125 kHz.

[0162] In the PPDU of FIG. 18, the L-LTF and L-STF are the same as conventional fields.

[0163] The L-SIG field in FIG. 18 may contain, for example, 24-bit bit information. For example, the 24-bit information may include a 4-bit Rate field, a 1-bit Reserved bit, a 12-bit Length field, a 1-bit Parity bit, and 6 Tail bits. For example, the 12-bit Length field may contain information about the length or time duration of the PPDU. For example, the value of the 12-bit Length field is determined based on the type of PPDU. For example, if the PPDU is a non-HT, HT, VHT PPDU, or EHT PPDU, the value of the Length field may be determined as a multiple of 3. For example, if the PPDU is an HE PPDU, the value of the Length field may be determined as "multiple of 3 + 1" or "multiple of 3 + 2." Furthermore, for non-HT, HT, VHT PPDU, or EHT PPDU, the value of the Length field is determined as a multiple of 3, and for HE PPDU, the value of the Length field is determined as "multiple of 3 + 1" or "multiple of 3 + 2."

[0164] For example, the transmitting STA can apply BCC encoding based on a code rate of 1 / 2 to the 24-bit information in the L-SIG field. The transmitting STA can then obtain 48 BCC-coded bits. BPSK modulation is applied to the 48 coded bits to generate 48 BPSK symbols. The transmitting STA can map the 48 BPSK symbols to positions excluding the pilot subcarriers (subcarrier indexes -21, -7, +7, +21) and the DC subcarrier (subcarrier index 0). As a result, the 48 BPSK symbols are mapped to subcarrier indexes -26 to -22, -20 to -8, -6 to -1, +1 to +6, +8 to +20, and +22 to +26. The transmitting STA can further map signals of {-1, -1, -1, 1} to subcarrier indexes {-28, -27, +27, 28}. The above signal is used for channel estimation for the frequency domain corresponding to {-28, -27, +27, 28}.

[0165] The transmitting STA can generate an RL-SIG, which is generated similarly to the L-SIG. BPSK modulation is applied to the RL-SIG. The receiving STA can determine whether the received PPDU is an HE PPDU or an EHT PPDU based on the presence of the RL-SIG.

[0166] A Universal SIG (U-SIG) is inserted after the RL-SIG in Figure 18. The U-SIG can be called by various names such as the first SIG field, first SIG, first type SIG, control signal, control signal field, or first (type) control signal.

[0167] The U-SIG can contain N bits of information, including information for identifying the type of EHT PPDU. For example, the U-SIG is composed of two symbols (e.g., two consecutive OFDM symbols). Each symbol (e.g., OFDM symbol) for the U-SIG can have a duration of 4 us. Each symbol of the U-SIG is used to transmit 26 bits of information. For example, each U-SIG symbol is transmitted and received based on 52 data tones and 4 pilot tones.

[0168] For example, A-bit information (e.g., 52 uncoded bits) can be transmitted via the U-SIG (or U-SIG field). The first symbol of the U-SIG transmits the first X-bit information (e.g., 26 uncoded bits) of the total A-bit information, and the second symbol of the U-SIG transmits the remaining Y-bit information (e.g., 26 uncoded bits). For example, the transmitting STA can obtain the 26 uncoded bits included in each U-SIG symbol. The transmitting STA can perform convolutional encoding (i.e., BCC encoding) based on a rate of R=1 / 2 to generate 52-coded bits and perform interleaving on the 52-coded bits. The transmitting STA can perform BPSK modulation on the interleaved 52-coded bits to generate 52 BPSK symbols assigned to each U-SIG symbol. One U-SIG symbol is transmitted based on 56 tones (subcarriers) from subcarrier index -28 to subcarrier index +28, excluding DC index 0. The 52 BPSK symbols generated by the transmitting STA are transmitted based on the remaining tones (subcarriers) excluding the pilot tones -21, -7, +7, and +21.

[0169] For example, A-bit information (e.g., 52 uncoded bits) transmitted by a U-SIG may include a CRC field (e.g., a 4-bit field) and a tail field (e.g., a 6-bit field). The CRC field and tail field are transmitted via the second symbol of the U-SIG. The CRC field is generated based on the 26 bits allocated to the first symbol of the U-SIG and the remaining 16 bits in the second symbol excluding the CRC / tail field, and is generated based on a conventional CRC calculation algorithm. The tail field is used to terminate the trellis of a convolutional decoder and is set to, for example, "000000."

[0170] The A-bit information (e.g., 52 uncoded bits) transmitted by a U-SIG (or U-SIG field) can be divided into version-independent bits and version-dependent bits. For example, the size of the version-independent bits can be fixed or variable. For example, the version-independent bits can be allocated only to the first symbol of a U-SIG, or the version-independent bits can be allocated to both the first and second symbols of a U-SIG. For example, the version-independent bits and version-dependent bits can be called by various names, such as the first control bits and the second control bits.

[0171] For example, the version-independent bits of the U-SIG may include a 3-bit PHY version identifier. For example, the 3-bit PHY version identifier may include information related to the PHY version of the transmitted / received PPDU. For example, a first value of the 3-bit PHY version identifier may indicate that the transmitted / received PPDU is an EHT PPDU. Furthermore, when transmitting an EHT PPDU, the transmitting STA may set the 3-bit PHY version identifier to the first value. Furthermore, the receiving STA may determine that the received PPDU is an EHT PPDU based on the PHY version identifier having the first value.

[0172] For example, the version-independent bits of the U-SIG may include a 1-bit UL / DL flag field, where a first value of the 1-bit UL / DL flag field is associated with UL communication and a second value of the UL / DL flag field is associated with DL communication.

[0173] For example, the version-independent bits of the U-SIG can include information about the length of the TXOP and information about the BSS color ID.

[0174] For example, if the EHT PPDU can be divided into various types (e.g., EHT PPDUs associated with SU mode, EHT PPDUs associated with MU mode, EHT PPDUs associated with TB mode, EHT PPDUs associated with Extended Range transmission, etc.), information about the type of EHT PPDU is included in the version-dependent bits of the U-SIG.

[0175] For example, the U-SIG may include information on: 1) a bandwidth field containing information about the bandwidth; 2) a field containing information about the MCS technique applied to the EHT-SIG; 3) an indication field containing information related to whether dual subcarrier modulation (DCM) technique is applied to the EHT-SIG; 4) a field containing information about the number of symbols used for the EHT-SIG; 5) a field containing information about whether the EHT-SIG is generated across the entire band; 6) a field containing information about the type of EHT-LTF / STF; and 7) a field indicating the length of the EHT-LTF and the CP length.

[0176] Preamble puncturing is applied to the PPDU in Figure 18. Preamble puncturing means applying puncturing to a portion of the entire bandwidth of the PPDU (e.g., the secondary 20 MHz band). For example, when an 80 MHz PPDU is transmitted, the STA applies puncturing to the secondary 20 MHz band of the 80 MHz band, and can transmit the PPDU only through the primary 20 MHz band and the secondary 40 MHz band.

[0177] For example, the preamble puncturing pattern is set in advance. For example, when a first puncturing pattern is applied, puncturing is applied only to the secondary 20 MHz band within the 80 MHz band. For example, when a second puncturing pattern is applied, puncturing is applied only to one of two secondary 20 MHz bands included in the secondary 40 MHz band within the 80 MHz band. For example, when a third puncturing pattern is applied, puncturing is applied only to the secondary 20 MHz band included in the primary 80 MHz band within the 160 MHz band (or 80+80 MHz band). For example, when a fourth puncturing pattern is applied, a primary 40 MHz band included in the primary 80 MHz band within the 160 MHz band (or 80+80 MHz band) is present, and puncturing is applied to at least one 20 MHz channel that does not belong to the primary 40 MHz band.

[0178] Information about preamble puncturing applied to the PPDU may be included in the U-SIG and / or EHT-SIG, for example, a first field of the U-SIG may include information about the contiguous bandwidth of the PPDU, and a second field of the U-SIG may include information about preamble puncturing applied to the PPDU.

[0179] For example, the U-SIG and EHT-SIG may contain information about preamble puncturing in the following manner: If the bandwidth of a PPDU exceeds 80 MHz, the U-SIGs are individually configured in 80 MHz increments. For example, if the bandwidth of a PPDU is 160 MHz, the PPDU may include a first U-SIG for a first 80 MHz band and a second U-SIG for a second 80 MHz band. In this case, the first field of the first U-SIG may contain information about the 160 MHz bandwidth, and the second field of the first U-SIG may contain information about the preamble puncturing applied to the first 80 MHz band (i.e., information about the preamble puncturing pattern). Also, the first field of the second U-SIG may contain information about the 160 MHz bandwidth, and the second field of the second U-SIG may contain information about the preamble puncturing applied to the second 80 MHz band (i.e., information about the preamble puncturing pattern). On the other hand, the EHT-SIG subsequent to the first U-SIG may include information regarding the preamble puncturing applied to the second 80 MHz band (i.e., information regarding the preamble puncturing pattern), and the EHT-SIG subsequent to the second U-SIG may include information regarding the preamble puncturing applied to the first 80 MHz band (i.e., information regarding the preamble puncturing pattern).

[0180] Additionally or essentially, the U-SIG and EHT-SIG may contain information about preamble puncturing based on the following method: The U-SIG may contain information about preamble puncturing for all bands (i.e., information about the preamble puncturing pattern). That is, the EHT-SIG does not contain information about preamble puncturing, and only the U-SIG may contain information about preamble puncturing (i.e., information about the preamble puncturing pattern).

[0181] U-SIGs are configured in 20 MHz units. For example, when an 80 MHz PPDU is configured, U-SIGs are duplicated. That is, the same four U-SIGs are included in the 80 MHz PPDU. PPDUs exceeding the 80 MHz bandwidth can contain different U-SIGs.

[0182] U-SIGs are configured in 20 MHz units. For example, when an 80 MHz PPDU is configured, U-SIGs are duplicated. That is, the same four U-SIGs are included in the 80 MHz PPDU. PPDUs exceeding the 80 MHz bandwidth can contain different U-SIGs.

[0183] The EHT-SIG in Figure 18 can include control information for the receiving STA. The EHT-SIG is transmitted over at least one symbol, and one symbol can have a length of 4 us. Information about the number of symbols used for the EHT-SIG is included in the U-SIG.

[0184] The EHT-SIG includes the technical features of the HE-SIG-B described in Figures 8 and 9. For example, the EHT-SIG can include a common field and a user-specific field, as in the example of Figure 8. The common field of the EHT-SIG is omitted, and the number of user-specific fields is determined based on the number of users.

[0185] As in the example of Figure 8, the common field of the EHT-SIG and the user specific field of the EHT-SIG are coded separately. One user block field included in the user specific fields can contain information for two users, while the last user block field included in the user specific fields can contain information for one user. That is, one user block field in the EHT-SIG can contain up to two user fields. As in the example of Figure 9, each user field is associated with either MU-MIMO allocation or non-MU-MIMO allocation.

[0186] Similar to the example of Figure 8, the common field of the EHT-SIG can include CRC bits and Tail bits, where the length of the CRC bits is determined to be 4 bits and the length of the Tail bits is determined to be 6 bits and set to "000000".

[0187] As in the example of Figure 8, the common field of the EHT-SIG can include RU allocation information. RU allocation information refers to information about the locations of RUs to which multiple users (i.e., multiple receiving STAs) are assigned. The RU allocation information is configured in 8-bit (or N-bit) units, as in Table 1.

[0188] Tables 5 through 7 show examples of 8-bit (or N-bit) information for various RU allocations. The indexes shown in each table can be changed, and some entries in Tables 5 through 7 can be omitted and others added.

[0189] Examples of Tables 5 to 7 relate to information about the locations of RUs allocated to the 20 MHz band. For example, "Index 0" in Table 5 is used in a situation where nine 26 RUs are individually allocated (e.g., the situation shown in Figure 5 where nine 26 RUs are individually allocated).

[0190] On the other hand, in an EHT system, multiple RUs can be assigned to one STA. For example, in Table 6, "Index 60" has one 26RU assigned to one user (i.e., the receiving STA) at the left end of the 20 MHz band, one 26RU and one 52RU assigned to another user (i.e., the receiving STA) to the right of that, and five 26RUs assigned individually to the right of that.

[0191] [Table 5]

[0192] [Table 6]

[0193] [Table 7]

[0194] A mode in which the common field of the EHT-SIG is omitted is supported. The mode in which the common field of the EHT-SIG is omitted can be called compressed mode. When compressed mode is used, multiple users of the EHT PPDU (i.e., multiple receiving STAs) can decode the PPDU (e.g., the data field of the PPDU) based on non-OFDMA. That is, multiple users of the EHT PPDU can decode the PPDU (e.g., the data field of the PPDU) received via the same frequency band. On the other hand, when non-compressed mode is used, multiple users of the EHT PPDU can decode the PPDU (e.g., the data field of the PPDU) based on OFDMA. That is, multiple users of the EHT PPDU can receive the PPDU (e.g., the data field of the PPDU) via different frequency bands.

[0195] The EHT-SIG can be configured based on various MCS techniques. As described above, information related to the MCS technique applied to the EHT-SIG is included in the U-SIG. The EHT-SIG can be configured based on the DCM technique. For example, of N data tones (e.g., 52 data tones) allocated for the EHT-SIG, a first modulation technique is applied to consecutive half of the tones, and a second modulation technique is applied to the remaining consecutive half of the tones. That is, the transmitting STA can modulate specific control information onto a first symbol based on a first modulation technique and assign it to consecutive half of the tones, and modulate the same control information onto a second symbol based on a second modulation technique and assign it to the remaining consecutive half of the tones. As described above, information related to whether the DCM technique is applied to the EHT-SIG (e.g., a 1-bit field) is included in the U-SIG. The EHT-STF of FIG. 18 is used to improve automatic gain control estimation in a multiple input multiple output (MIMO) environment or an OFDMA environment. The EHT-LTF of FIG. 18 is used to estimate the channel in a MIMO environment or an OFDMA environment.

[0196] The EHT-STF in FIG. 18 can be configured as various types. For example, the first type of STF (i.e., 1x STF) is generated based on a type-1 STF sequence in which non-zero coefficients are allocated to 16 subcarrier intervals. The STF signal generated based on the type-1 STF sequence can have a period of 0.8 μs, and a 0.8 μs periodic signal is repeated five times to form a type-1 STF with a length of 4 μs. For example, the second type of STF (i.e., 2x STF) is generated based on a type-2 STF sequence in which non-zero coefficients are allocated to 8 subcarrier intervals. The STF signal generated based on the type-2 STF sequence can have a period of 1.6 μs, and a 1.6 μs periodic signal is repeated five times to form a type-2 EHT-STF with a length of 8 μs. An example of a sequence for configuring an EHT-STF (i.e., an EHT-STF sequence) is presented below. The following sequence can be modified in various ways.

[0197] EHT-STF is constructed based on the following M-sequence:

[0198] [Number 1] M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1}

[0199] The EHT-STF for a 20 MHz PPDU is constructed based on the following equation. The following example is a type 1 (i.e., 1x STF) sequence. For example, a type 1 sequence is included in an EHT-PPDU that is not a trigger-based (TB) PPDU. In the following equations, (a:b:c) refers to the interval defined as b tone interval (i.e., subcarrier interval) from tone index a (i.e., subcarrier index) to tone index c. For example, Equation 2 below can represent a sequence defined as a 16-tone interval from tone index -112 to 112 index. Since a subcarrier spacing of 78.125 kHz is applied to the EHT-STF, the 16-tone interval means that the EHT-STF coefficient (or element) is placed at an interval of 78.125 * 16 = 1250 kHz. Also, * means multiplication, and sqrt() means square root.

[0200] [Number 2] EHT-STF(-112:16:112)={M}*(1+j) / sqrt(2) EHT-STF(0)=0

[0201] The EHT-STF for 40MHz PPDU is constructed based on the following formula: The following example is a first type (ie, 1x STF) sequence.

[0202] [Number 3] EHT-STF(-240:16:240)={M,0,-M}*(1+j) / sqrt(2)

[0203] The EHT-STF for 80MHz PPDU is constructed based on the following formula: The following example is a first type (ie, 1x STF) sequence.

[0204] [Number 4] EHT-STF(-496:16:496)={M,1,-M,0,-M,1,-M}*(1+j) / sqrt(2)

[0205] The EHT-STF for 160MHz PPDU is constructed based on the following formula: The following example is a first type (ie, 1x STF) sequence.

[0206] [Number 5] EHT-STF(-1008:16:1008)={M,1,-M,0,-M,1,-M,0,-M,-1,M,0,-M,1,-M}*(1+j) / sqrt(2)

[0207] The sequence for the lower 80 MHz of the EHT-STF for the 80+80 MHz PPDU is the same as Equation 4. The sequence for the upper 80 MHz of the EHT-STF for the 80+80 MHz PPDU is constructed based on the following equation.

[0208] [Number 6] EHT-STF(-496:16:496)={-M,-1,M,0,-M,1,-M}*(1+j) / sqrt(2)

[0209] Equations 7 to 11 below relate to an example of a second type (ie, 2x STF) sequence.

[0210] [Number 7] EHT-STF(-120:8:120)={M,0,-M}*(1+j) / sqrt(2)

[0211] The EHT-STF for 40MHz PPDU is constructed based on the following formula:

[0212] [Number 8] EHT-STF(-248:8:248)={M,-1,-M,0,M,-1,M}*(1+j) / sqrt(2) EHT-STF(-248)=0 EHT-STF(248)=0

[0213] The EHT-STF for 80MHz PPDU is constructed based on the following formula:

[0214] [Number 9] EHT-STF(-504:8:504)={M,-1,M,-1,-M,-1,M,0,-M,1,M,1,-M,1,-M}*(1+j) / sqrt(2)

[0215] The EHT-STF for 160MHz PPDU is constructed based on the following formula:

[0216] [Number 10] EHT-STF(-1016:16:1016)={M,-1,M,-1,-M,-1,M,0,-M,1,M,1,-M,1,-M,0,-M,1,-M,1,M,1,-M,0,-M,1,M,1,-M,1,-M}*(1+j) / sqrt(2) EHT-STF(-8)=0,EHT-STF(8)=0, EHT-STF(-1016)=0,EHT-STF(1016)=0

[0217] The sequence for the lower 80 MHz of the EHT-STF for the 80+80 MHz PPDU is the same as Equation 9. The sequence for the upper 80 MHz of the EHT-STF for the 80+80 MHz PPDU is configured based on the following equation.

[0218] [Number 11] EHT-STF(-504:8:504)={-M,1,-M,1,M,1,-M,0,-M,1,M,1,-M,1,-M}*(1+j) / sqrt(2) EHT-STF(-504)=0, EHT-STF(504)=0

[0219] EHT-LTF can have three types (i.e., 1x, 2x, and 4xLTF). For example, the first, second, and third type LTFs are generated based on an LTF sequence in which non-zero coefficients are placed in 4, 2, and 1 subcarrier intervals. The first, second, and third type LTFs can have time lengths of 3.2, 6.4, and 12.8 μs. GIs of various lengths (e.g., 0.8, 1, 6, and 3.2 μs) are applied to the first, second, and third type LTFs.

[0220] Information about the type of STF and / or LTF (including information about the GI applied to the LTF) is included in the SIG A field and / or SIG B field of FIG.

[0221] The PPDU in FIG. 18 (ie, EHT-PPDU) is configured based on the examples in FIGS.

[0222] For example, an EHT PPDU transmitted on a 20 MHz band, i.e., a 20 MHz EHT PPDU, is configured based on the RUs in Fig. 5. That is, the RU locations of the EHT-STF, EHT-LTF, and data fields included in the EHT PPDU are determined as shown in Fig. 5.

[0223] The EHT PPDU transmitted on the 40 MHz band, i.e., the 40 MHz EHT PPDU, is configured based on the RU in Figure 6. That is, the RU locations of the EHT-STF, EHT-LTF, and data fields included in the EHT PPDU are determined as shown in Figure 6.

[0224] Since the RU position in Figure 6 corresponds to 40 MHz, the tone plan for 80 MHz is determined by repeating the pattern in Figure 6 twice. That is, the 80 MHz EHT PPDU is transmitted based on a new tone plan in which the RU in Figure 6 is repeated twice, not the RU in Figure 7.

[0225] 6 is repeated twice, 23 tones (i.e., 11 guard tones + 12 guard tones) are configured in the DC region. That is, the tone plan for an 80 MHz EHT PPDU allocated based on OFDMA can have 23 DC tones. On the other hand, an 80 MHz EHT PPDU allocated based on non-OFDMA (i.e., non-OFDMA full bandwidth 80 MHz PPDU) is configured based on 996RU and can include 5 DC tones, 12 left guard tones, and 11 right guard tones.

[0226] The tone plan for 160 / 240 / 320MHz is constructed by repeating the pattern in Figure 6 many times.

[0227] The PPDU in FIG. 18 is identified as an EHT PPDU based on the following method.

[0228] The receiving STA can determine the type of the received PPDU as an EHT PPDU based on the following: For example, if 1) the first symbol after the L-LTF signal of the received PPDU is BPSK, 2) an RL-SIG in which the L-SIG of the received PPDU is repeated is detected, and 3) the result of applying 'modulo 3' to the value of the Length field of the L-SIG of the received PPDU is detected as '0', the received PPDU is determined to be an EHT PPDU. If the received PPDU is determined to be an EHT PPDU, the receiving STA can detect the type of EHT PPDU (e.g., SU / MU / Trigger-Based / Extended Range type) based on bit information included in the symbols after the RL-SIG in FIG. 18. In addition, the receiving STA can determine that the received PPDU is an EHT PPDU based on 1) the first symbol after the L-LTF signal, which is a BSPK, 2) the RL-SIG that follows the L-SIG field and is the same as the L-SIG, and 3) the L-SIG including the Length field, where the result of applying "modulo 3" is set to "0".

[0229] For example, the receiving STA can determine the type of the received PPDU as an HE PPDU based on the following: 1) the first symbol after the L-LTF signal is BPSK, 2) an RL-SIG in which the L-SIG is repeated is detected, and 3) the result of applying "modulo 3" to the length value of the L-SIG is detected as "1" or "2", the received PPDU is determined to be an HE PPDU.

[0230] For example, the receiving STA can determine the type of the received PPDU as non-HT, HT, or VHT PPDU based on the following: 1) the first symbol after the L-LTF signal is BPSK, and 2) if an RL-SIG in which the L-SIG is repeated is not detected, the received PPDU is determined to be a non-HT, HT, or VHT PPDU. Also, even if the receiving STA detects a repetition of the RL-SIG, if the result of applying "modulo 3" to the length value of the L-SIG is detected as "0," the received PPDU is determined to be a non-HT, HT, or VHT PPDU.

[0231] In the following example, signals indicated as (send / receive / up / down) signals, (send / receive / up / down) frames, (send / receive / up / down) packets, (send / receive / up / down) data units, (send / receive / up / down) data, etc. are signals transmitted and received based on the PPDU of FIG. 18. The PPDU of FIG. 18 is used to transmit and receive various types of frames. For example, the PPDU of FIG. 18 is used for a control frame. Examples of control frames include a request to send (RTS), a clear to send (CTS), a Power Save-Poll (PS-Poll), a Block ACK Req, a Block ACK, a Null Data Packet (NDP) announcement, and a Trigger frame. For example, the PPDU of FIG. 18 is used for a management frame. Examples of management frames include a Beacon frame, a (Re-)Association request frame, a (Re-)Association response frame, a Probe request frame, and a Probe response frame. For example, the PPDU in Fig. 18 is used for a data frame. For example, the PPDU in Fig. 18 may be used to simultaneously transmit at least two or more of a control frame, a management frame, and a data frame.

[0232] FIG. 19 shows a variation of the transmitting device and / or receiving device of this specification.

[0233] Each device / STA in Figure 1(a) / (b) is modified as shown in Figure 19. The transceiver (630) in Figure 19 is the same as the transceivers (113, 123) in Figure 1. The transceiver (630) in Figure 19 can include a receiver and a transmitter.

[0234] The processor (610) in FIG. 19 is the same as the processors (111, 121) in FIG. 1. Alternatively, the processor (610) in FIG. 19 is the same as the processing chips (114, 124) in FIG.

[0235] The memory (150) in FIG. 19 is the same as the memories (112, 122) in FIG. 1. Alternatively, the memory (150) in FIG. 19 is a separate external memory different from the memories (112, 122) in FIG.

[0236] Referring to Figure 19, the power management module 611 manages power for the processor 610 and / or transceiver 630. The battery 612 provides power to the power management module 611. The display 613 outputs the results processed by the processor 610. The keypad 614 receives inputs used by the processor 610. The keypad 614 can be displayed on the display 613. The SIM card 615 is an integrated circuit used to securely store an international mobile subscriber identity (IMSI) and associated keys used to identify and authenticate subscribers in mobile phone devices such as mobile phones and computers.

[0237] 19, the speaker (640) can output sound-related results processed by the processor (610). The microphone (641) can receive sound-related inputs used by the processor (610).

[0238] 1. STF sequence (or STF signal)

[0239] The main purpose of the HE-STF field is to improve automatic gain control estimation in MIMO transmissions.

[0240] Figure 20 illustrates an example of 2x HE-STF tones in per-channel PPDU transmission according to this embodiment. Specifically, Figure 20 illustrates HE-STF tones (i.e., 8 tone samples) with a 1.6 μs periodicity in a 20 MHz / 40 MHz / 80 MHz bandwidth. Therefore, in Figure 21, the HE-STF tones for each bandwidth (or channel) can be spaced at intervals of 8 tones.

[0241] According to Figure 20, the 2x HE-STF signal is applied to the uplink MU PPDU, i.e., the PPDU transmitted over the uplink in response to the trigger frame described above includes the 2x HE-STF signal shown in Figure 20.

[0242] In Figure 20, the x-axis represents the frequency domain. The numbers on the x-axis represent tone indices, and the arrows indicate that non-zero values ​​are mapped to the corresponding tone indices.

[0243] FIG. 20(a) is a diagram illustrating 2x HE-STF tones in a 20MHz PPDU transmission.

[0244] Referring to FIG. 20(a), when an HE-STF sequence for a 1.6 μs period (i.e., a 2× HE-STF sequence) is mapped to tones in a 20 MHz channel, the 2× HE-STF sequence is mapped to tones with tone indices that are multiples of 8 excluding DC among tones with tone indices from −120 to 120, and 0 is mapped to the remaining tones. That is, in a 20 MHz channel, the 2× HE-STF tones can be located at tone indices that are multiples of 8 excluding DC among tones with tone indices from −120 to 120. Therefore, there are a total of 30 2× HE-STF tones in a 20 MHz channel to which the 2× HE-STF sequence can be mapped.

[0245] FIG. 20(b) is a diagram illustrating 2x HE-STF tones in a 40 MHz PPDU transmission.

[0246] Referring to FIG. 20(b), when an HE-STF sequence for a 1.6 μs period (i.e., a 2× HE-STF sequence) is mapped to tones in a 40 MHz channel, the 2× HE-STF sequence is mapped to tones having tone indices that are multiples of 8 excluding DC among tones having tone indices from −248 to 248, and 0 is mapped to the remaining tones. That is, in a 40 MHz channel, the 2× HE-STF tones can be located at tone indices that are multiples of 8 excluding DC among tones having tone indices from −248 to 248. However, here, tones having tone indices ±248 correspond to guard tones (left and right guard tones) and are nulled (i.e., have a value of 0). Therefore, there are a total of 60 2× HE-STF tones to which the 2× HE-STF sequence can be mapped in a 40 MHz channel.

[0247] FIG. 20(c) is a diagram illustrating 2x HE-STF tones in an 80 MHz PPDU transmission.

[0248] Referring to FIG. 20(c), when an HE-STF sequence for a 1.6 μs period (i.e., a 2× HE-STF sequence) is mapped to tones in an 80 MHz channel, the 2× HE-STF sequence is mapped to tones with tone indices that are multiples of 8 excluding DC among tones with tone indices from −504 to 504, and 0 is mapped to the remaining tones. That is, in an 80 MHz channel, the 2× HE-STF tones can be located at tone indices that are multiples of 8 excluding DC among tones with tone indices from −504 to 504. However, here, the tones with tone indices ±504 correspond to guard tones (left and right guard tones) and are nulled (i.e., have a value of 0). Therefore, there are a total of 124 2× HE-STF tones in an 80 MHz channel to which the 2× HE-STF sequence can be mapped.

[0249] The 2x HE-STF sequence in Figure 20 is used to construct the HE-STF field for the HE TB PPDU.

[0250] 1. Embodiments Applicable to This Specification

[0251] In order to increase peak throughput in wireless LAN 802.11 systems, it is considering using a wider band than the existing 802.11ax or using more antennas to transmit an increased stream. It is also considering methods of aggregating various bands.

[0252] In this specification, we consider the case where a wide band is used, i.e., the case where PPDU is transmitted using 240 / 320 MHz, and propose a 2x EHT STF sequence in this case, taking into account various RU aggregations in particular.

[0253] The existing 802.11ax standard defines 1x / 2x HE-STF sequences. 1x HE-STF is used for all HE PPDUs except the HE TB PPDU for uplink transmission, and 2x HE-STF is used for the HE TB PPDU. The 1x HE-STF sequence is mapped to 16 subcarriers. IFFTing this generates a 12.8 us symbol, with the same signal repeated every 0.8 us. This 0.8 us signal is repeated five times to create a 4 us 1x HE-STF. The 2x HE-STF sequence is mapped to 8 subcarriers. IFFTing this generates a 12.8 us symbol, with the same signal repeated every 1.6 us. This 1.6 us signal is repeated five times to create an 8 us 2x HE-STF. In this specification, when transmitting a PPDU in a wideband, the design of a 2x STF sequence is addressed, and this is referred to as a 2x EHT-STF sequence. Figure 18 shows a typical structure of an 802.11be PPDU, and the proposed 2x EHT-STF sequence is a frequency domain sequence applied to the EHT-STF in Figure 18. In the case of an EHT TB PPDU to which the 2x EHT-STF sequence is applied in Figure 18, the EHT-SIG may be omitted.

[0254] The above content can be expressed as follows: The STF signal is generated based on an STF sequence. The STF sequence is expressed based on a pre-set subcarrier spacing (e.g., 78.125 kHz). The STF sequence in this specification is referred to by various names such as an EHT-STF sequence or an EHT STF sequence.

[0255] As described above, STFs are configured in various types. For example, the first type of STF (i.e., 1xSTF) is generated based on a type-1 STF sequence in which non-zero coefficients are arranged at intervals of 16 subcarriers. The STF signal generated based on the type-1 STF sequence has a period of 0.8 μs, and the 0.8 μs periodic signal is repeated five times to form a type-1 STF with a length of 4 μs (shown in FIG. 20). For example, the second type of STF (i.e., 2xSTF) is generated based on a type-2 STF sequence in which non-zero coefficients are arranged at intervals of 8 subcarriers. The STF signal generated based on the type-2 STF sequence has a period of 1.6 μs, and the 1.6 μs periodic signal is repeated five times to form a type-2 EHT-STF with a length of 8 μs (shown in FIG. 21). For example, among the STFs, a third type (ie, 4xEHT-STF) is generated based on a third type STF sequence in which non-zero coefficients are arranged at intervals of four subcarriers.

[0256] As described above, the second type (i.e., 2x STF) STF is used for the TB PPDU transmitted in response to a Trigger Frame, and the first type STF is used for other types of SU / MU PPDUs that are not TB PPDUs.

[0257] In 802.11be, contiguous 240 / 320 MHz and non-contiguous 160+80 / 80+160 / 160+160 MHz bandwidths are added to the existing 20 / 40 / 80 / 160 / 80+80 MHz bandwidths, and the configuration of the 2x EHT-STF sequence applied to 240 / 320 MHz may vary depending on the tone plan. In this specification, a wideband tone plan with a repeated structure of the existing 80 MHz tone plan of 802.11ax is considered. In this situation, a wideband 2x EHT-STF sequence can be configured by repeating the 80 MHz 2x STF sequence. However, due to the nature of the repeated sequence, the PAPR may increase, and therefore additional phase rotation may be required. In 802.11ax, an 80MHz 2x HE STF sequence is repeated twice to form a 160MHz 2x HE-STF sequence, and then the first 40MHz of the secondary 80MHz channel (or a relatively high-frequency 80MHz channel) is multiplied by -1 to form the sequence. This specification also extends and applies this method, proposing a sequence that reduces PAPR by repeating the 80MHz 2x STF sequence and applying additional phase rotation in 20 / 40 / 80MHz increments to channels other than the primary channel (or a relatively low-frequency 80MHz channel). Furthermore, at 320MHz, a sequence is proposed that reduces PAPR by repeating the 160MHz 2x STF sequence and applying additional phase rotation in 20 / 40 / 80 / 160MHz increments to the secondary 160MHz channel (or a relatively high-frequency 160MHz channel). 240 / 160+80 / 80+160MHz can be thought of as 320 / 160+160MHz with the 80MHz portion punctured.That is, the 2x EHT-STF sequence used for 320 / 160+160 MHz, excluding the punctured 80 MHz 2x EHT-STF portion, can be used for the 2x EHT-STF for 240 / 160+80 / 80+160 MHz. Therefore, this specification first proposes a 320 / 160+160 MHz 2x EHT-STF sequence, and then proposes a 240 / 160+80 / 80+160 MHz 2x EHT-STF sequence obtained by puncturing this. A 2x EHT-STF sequence based on the repetition of the 80 MHz 2x STF sequence for 240 / 160+80 / 80+160 MHz is also proposed.

[0258] When optimizing the 2x EHT-STF sequence, it is necessary to consider the PAPR of each RU since it is applied to the TB PPDU, and since multiple RU aggregation is approved in 802.11be, it is also necessary to consider the PAPR (Peak To Average Power Ratio) of specific RU combinations. Below is a list of RUs and RU combinations considered when calculating the PAPR when optimizing the 2x EHT-STF sequence at 320MHz and 240MHz.

[0259] 320MHz: 26RU (148 pieces), 52RU (64 pieces), 106RU (32 pieces), 242RU (16 pieces), 484RU (8 pieces), 996 RU (4 pieces), 26+52RU (16 pieces), 242+484RU (16 pieces), 2x996 RU (2 pieces), 484+996 RU(8 pieces), 3x996 RU(4 pieces), 4x 996 RU(1 piece)

[0260] 240MHz: 26RU (111 pieces), 52RU (48 pieces), 106RU (24 pieces), 242RU (12 pieces), 484RU (6 pieces), 996 RU (3 pieces), 26+52RU (12 pieces), 242+484RU (12 pieces), 2x996 RU (2 pieces), 484+996 RU(8 pieces), 3x996 RU(1 piece)

[0261] Figure 7 shows the tone plan for the 80 MHz band, and if this is repeated four or three times, the number of RUs in each band will be as shown above.

[0262] Figure 21 shows a combination of 26+52RU in an 80MHz band tone plan.

[0263] In the case of RU aggregation, 26+52RU allows for four consecutive combinations of 26RU and 52RU in each 80MHz channel, as shown in Figure 21. Therefore, at 320MHz, 16 combinations of 26RU and 52RU are possible, and at 240MHz, 12 combinations of 26RU and 52RU are possible.

[0264] 242+484RU allows a total of four combinations on each 80MHz channel, so there are 16 possible combinations on 320MHz and 12 possible combinations on 240MHz.

[0265] 484+996 RU allows a total of four combinations on each 160MHz channel, and on 320MHz this combination is permitted on both the primary 160MHz and secondary 160MHz channels, for a total of eight combinations, and on 240MHz this combination is permitted on two consecutive 80MHz channels, for a total of eight combinations.

[0266] 2x996 RUs allow one combination per 160MHz channel, and in 320MHz this combination is permitted on both the primary 160MHz and secondary 160MHz channels, for a total of two combinations. In 240MHz this combination is permitted on two consecutive 80MHz channels, for a total of two combinations.

[0267] 3x996 RU means that a combination of 996 RUs is allowed on 320MHz, for a total of four possible combinations, and only one possible combination on 240MHz.

[0268] 4x 996 RU is the only combination possible on 320MHz.

[0269] In the following proposal, PAPR refers to the largest PAPR value among multiple RUs and RU combinations. In addition, the sequence is optimized from the perspective of PAPR, and when calculating PAPR, bandwidth is considered only in contiguous situations, but the proposed sequence is also applicable to non-contiguous situations.

[0270] We propose an optimized sequence using the same M sequence as in 802.11ax, as follows:

[0271] M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1}

[0272] In the example below, the method for displaying a sequence is based on the following method.

[0273] For example, EHTS -496:16:496 In the case of a sequence, the index range is defined between -496 and +496, and the sequence elements are defined at intervals of 16. That is, specific values ​​are assigned to -496, -480, -464, ...

[0274] In this specification, the 1x sequence is EHTS. -496:16:496 Like sequences, sequences are defined at 16 index intervals. Also, 2x sequences are defined at 8 index intervals. For example, 4x sequences are defined at 4 index intervals.

[0275] The sequence index can indicate a position in the frequency domain and is determined based on the subcarrier frequency spacing value. For example, if delta_f (e.g., 78.125 kHz) is applied to the HE-STF sequence (or HE-STF field), index 0 indicates the DC element, index 16 indicates the 16*delta_f kHz point, and index -16 indicates the -16*delta_f kHz point. For example, the delta_f value is set to 312.5 kHz / N (N = integer) or 312.5 kHz * N (N = integer).

[0276] On the other hand, for convenience of explanation, commas can be omitted within a sequence. For example, {M 1 -M 0 -M 1 -M}*(1+j) / sqrt(2) means {M,1,-M,0,-M,1,-M}*(1+j) / sqrt(2).

[0277] 2.1.320MHz 2x EHT-STF sequence

[0278] We propose a method of simply repeating the existing 80MHz 1x HE STF sequence and a sequence that reduces PAPR by repeating this sequence and applying additional phase rotation in 20 / 40 / 80MHz units to channels other than the primary channel (or a relatively low-frequency 80MHz channel).We also propose a method of simply repeating the existing 160MHz 1x HE STF sequence and a sequence that reduces PAPR by repeating this sequence and applying additional phase rotation in 20 / 40 / 80 / 160MHz units to the secondary 160MHz channel (or a relatively high-frequency 160MHz channel).For reference, all PAPRs below are calculated when a 4x Inverse Fast Fourier Transform (IFFT) / Inverse Discrete Fourier Transform (IDFT) is applied, and the units are dB.

[0279] 2.1.180MHz 2x HE-STF sequence repetition

[0280] The existing 802.11ax 80MHz 2x HE-STF sequence can be repeated four times to form a 2x EHT-STF sequence, as shown below.

[0281] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0282] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS1016 =EHTS 1032 =EHTS 2040 =0

[0283] The maximum PAPR is 10.8833.

[0284] 2.1. 280MHz 2x HE-STF sequence repetition and additional phase rotation in 20MHz increments on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[0285] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0286] or

[0287] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0288] or

[0289] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M-1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0290] In all the above sequences, the following coefficients are replaced with 0:

[0291] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0292] The maximum PAPR is 7.7789.

[0293] 2.1.3.80MHz 2x HE-STF sequence repetition and additional phase rotation in 40MHz increments on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[0294] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0295] or

[0296] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0297] In all the above sequences, the following coefficients are replaced with 0:

[0298] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0299] The maximum PAPR is 8.9154.

[0300] 2.1.4.80MHz 2x HE-STF sequence repetition and additional phase rotation in 80MHz units on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[0301] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0302] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016=EHTS 1032 =EHTS 2040 =0

[0303] The maximum PAPR is 9.0112.

[0304] It can be seen that the 2x EHT-STF sequence obtained by repeating the 80MHz 2x HE-STF sequence and taking additional phase rotation into consideration as in this embodiment (2.1.4) has a lower PAPR than the 2x EHT-STF sequence obtained by simply repeating the 80MHz 2x HE-STF sequence as in the previous embodiment (2.1.1), which has the advantage of enabling estimation of subcarrier efficiency and effective AGC.

[0305] In addition, in the proposed 2x EHT-STF sequence, even if a specific coefficient other than 0 is set to elements with tone indices of -8, +8, -1016, +1016, -1032, +1032, -2040, and +2040, there is no problem in terms of PAPR. However, from the perspective of transmission power, which is not PAPR, performance loss may occur because power is supplied to tones that do not need to be supplied. In particular, if a specific coefficient other than 0 is supplied to DC, problems such as DC offset may occur, resulting in signal distortion. In other words, by setting the elements with tone indices of -8, +8, -1016, +1016, -1032, +1032, -2040, and +2040 to 0, it is possible to solve the problem of performance loss when AGC is operating in the receiving STA.

[0306] 2.1.5.160MHz 2x HE-STF sequence repetition

[0307] The existing 802.11ax 160MHz 2x HE-STF sequence can be repeated twice to form a 2x EHT-STF sequence, as shown below.

[0308] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0309] In all the above sequences, the following coefficients are replaced with 0:

[0310] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0311] The maximum PAPR is 9.0115.

[0312] 2.1.6. 160MHz 2x HE-STF sequence repetition and additional phase rotation in 20MHz increments on the secondary channel (or a 160MHz channel with a relatively high frequency)

[0313] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0314] or

[0315] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0316] Or

[0317] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0318] Or

[0319] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0320] Or

[0321] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0322] Or

[0323] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0324] Or

[0325] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0326] Or

[0327] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0328] Or

[0329] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0330] Or

[0331] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0332] Or

[0333] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0-M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0334] Or

[0335] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0336] Or

[0337] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0338] Or

[0339] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0340] Or

[0341] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0342] Or

[0343] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0344] Or

[0345] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0346] Or

[0347] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0348] Or

[0349] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0350] Or

[0351] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0352] Or

[0353] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0354] Or

[0355] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0356] Or

[0357] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0358] Or

[0359] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0360] Or

[0361] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0362] Or

[0363] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0364] Or

[0365] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0366] Or

[0367] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0368] Or

[0369] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0370] Or

[0371] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0372] Or

[0373] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0374] Or

[0375] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0376] Or

[0377] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0378] Or

[0379] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0380] Or

[0381] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0382] Or

[0383] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0384] Or

[0385] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0386] Or

[0387] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0388] Or

[0389] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0390] Or

[0391] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0392] Or

[0393] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0394] Or

[0395] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0396] Or

[0397] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0398] Or

[0399] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0400] Or

[0401] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0402] Or

[0403] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0404] Or

[0405] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0-M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0406] Or

[0407] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0408] Or

[0409] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0410] Or

[0411] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0412] Or

[0413] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0414] Or

[0415] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0416] Or

[0417] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0418] Or

[0419] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0420] Or

[0421] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0422] Or

[0423] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0424] Or

[0425] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0426] Or

[0427] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0428] Or

[0429] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0430] Or

[0431] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0432] Or

[0433] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0434] Or

[0435] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0436] Or

[0437] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0438] Or

[0439] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0440] Or

[0441] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0442] Or

[0443] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0-M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0444] Or

[0445] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0446] Or

[0447] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0448] Or

[0449] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0450] Or

[0451] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0452] Or

[0453] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0454] Or

[0455] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0456] Or

[0457] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0458] Or

[0459] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0460] Or

[0461] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0462] Or

[0463] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0464] Or

[0465] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0466] Or

[0467] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0468] Or

[0469] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0470] Or

[0471] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0472] Or

[0473] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0474] Or

[0475] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0476] Or

[0477] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0478] Or

[0479] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0480] Or

[0481] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0482] Or

[0483] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0484] Or

[0485] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0486] Or

[0487] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0488] Or

[0489] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0490] Or

[0491] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0492] Or

[0493] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0494] Or

[0495] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0496] Or

[0497] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0498] Or

[0499] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0500] Or

[0501] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0502] Or

[0503] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0504] Or

[0505] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0506] Or

[0507] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0508] Or

[0509] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0510] Or

[0511] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0512] Or

[0513] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0514] Or

[0515] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0516] Or

[0517] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0518] Or

[0519] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0520] Or

[0521] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0522] Or

[0523] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0524] Or

[0525] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0526] Or

[0527] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0528] Or

[0529] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0-M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0530] Or

[0531] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0532] Or

[0533] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0534] Or

[0535] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0536] Or

[0537] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0538] Or

[0539] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0540] Or

[0541] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0542] Or

[0543] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0544] Or

[0545] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0546] Or

[0547] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0548] Or

[0549] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0550] Or

[0551] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0552] Or

[0553] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0554] Or

[0555] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0556] Or

[0557] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0558] Or

[0559] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0560] Or

[0561] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0562] Or

[0563] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0564] Or

[0565] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0566] Or

[0567] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0568] Or

[0569] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0570] Or

[0571] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0572] Or

[0573] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0574] Or

[0575] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0576] Or

[0577] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0578] Or

[0579] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0-M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0580] Or

[0581] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0582] or

[0583] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0584] In all the above sequences, the following coefficients are replaced with 0:

[0585] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0586] The maximum PAPR is 9.0115.

[0587] 2.1.7. 160MHz 2x HE-STF sequence repetition and additional phase rotation in 40MHz increments on the secondary channel (or a 160MHz channel with a relatively high frequency)

[0588] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0589] Or

[0590] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0591] Or

[0592] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0593] Or

[0594] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0595] or

[0596] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0597] or

[0598] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0599] In all the above sequences, the following coefficients are replaced with 0:

[0600] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0601] The maximum PAPR is 9.0115.

[0602] 2.1.8. 160MHz 2x HE-STF sequence repetition and additional phase rotation in 80MHz units on the secondary channel (or a 160MHz channel with a relatively high frequency)

[0603] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0604] or

[0605] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0606] In all the above sequences, the following coefficients are replaced with 0:

[0607] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0608] The maximum PAPR is 9.0115.

[0609] 2.1.9. 160MHz 2x HE-STF sequence repetition and additional phase rotation in 160MHz units on the secondary channel (or a 160MHz channel with a relatively high frequency)

[0610] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0611] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0612] The maximum PAPR is 9.0115.

[0613] From a PAPR perspective, the proposal in 2.1.2 is appropriate. From an implementation perspective, the method in 2.1.4, which repeats the 11ax 80MHz phase rotation and multiplies the high frequency 160MHz or secondary 160MHz part by -1, is advantageous. Alternatively, simply repeating the 11ax 1600MHz phase rotation is advantageous from an implementation perspective.

[0614] The above proposes a 2x EHT-STF sequence for a contiguous 320MHz situation. The same sequence can be used for non-contiguous 160+160MHz. That is, among the 2x EHT-STF sequences for contiguous 320MHz, the sequence corresponding to the low 160MHz is applied to the low 160MHz or primary 160MHz of non-contiguous 160+160MHz, and among the 2x EHT-STF sequences for contiguous 320MHz, the sequence corresponding to the high 160MHz is applied to the high 160MHz or secondary 160MHz of non-contiguous 160+160MHz. For example, considering the sequence proposed in 2.1.4, the sequence for non-contiguous 160+160MHz can be expressed as follows:

[0615] Contiguous 320MHz

[0616] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0617] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0618] Non-contiguous 160+160MHz

[0619] Low 160MHz or primary 160MHz

[0620] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0621] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0622] High 160MHz or secondary 160MHz

[0623] EHTS -1016:8:1016 ={-M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0624] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0625] As another example, considering the sequence proposed in 2.1.9, a non-contiguous 160+160MHz sequence can be expressed as follows:

[0626] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0627] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0628] Non-contiguous 160+160MHz

[0629] Low 160MHzまたはprimary 160MHz

[0630] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0631] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0632] High 160MHzまたはsecondary 160MHz

[0633] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0634] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0635] 2.2.240MHz 2x EHT-STF sequence

[0636] Of the 2x EHT-STF proposed at 320 MHz, the punctured 80 MHz 2x EHT-STF portion can be removed and proposed for 240 / 160+80 / 80+160 MHz.

[0637] 2.2.1.320MHz 2x EHT-STF puncturing

[0638] For example, assume that the following 320 MHz 2x EHT-STF sequence is used:

[0639] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0640] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0641] In this case, if the first 80 MHz is punctured, the following 240 MHz 2x EHT STF sequence can be used.

[0642] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0643] EHTS-1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0644] If the second 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used:

[0645] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0646] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0647] If the third 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used:

[0648] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0649] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0650] If the fourth 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used.

[0651] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0652] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0653] As another example, assume that the following 320 MHz 2x EHT STF sequence is used:

[0654] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0655] In this case, if the first 80 MHz is punctured, the following 240 MHz 2x EHT STF sequence can be used.

[0656] EHTS -1528:8:1528 ={-M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0657] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0658] If the second 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used:

[0659] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0660] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0661] If the third 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used.

[0662] EHTS -1528:8:1528={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0663] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0664] If the fourth 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used.

[0665] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0666] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0667] Furthermore, we propose a method of simply repeating the existing 80MHz 2x HE STF sequence, and a sequence that repeats this and applies additional phase rotation in 20 / 40 / 80MHz units to channels other than the primary channel (or a relatively low-frequency 80MHz channel) to reduce the PAPR.

[0668] 2.2.2.80MHz 2x HE-STF sequence repetition

[0669] The existing 80MHz 2x HE-STF sequence can be repeated three times to form a 2x EHT-STF sequence, as follows:

[0670] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0671] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0672] The maximum PAPR is 9.6339.

[0673] 2.2.3. 80MHz 2x HE-STF sequence repetition and additional phase rotation in 20MHz increments on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[0674] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0675] In all the above sequences, the following coefficients are replaced with 0:

[0676] EHTS -1528 =EHTS-520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0677] The maximum PAPR is 7.6361.

[0678] 2.2.4. 80MHz 2x HE-STF sequence repetition and additional phase rotation in 40MHz increments on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[0679] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0680] or

[0681] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0682] In all the above sequences, the following coefficients are replaced with 0:

[0683] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0684] The maximum PAPR is 8.7809.

[0685] It can be seen that the 2x EHT-STF sequence obtained by repeating the 80MHz 2x HE-STF sequence and taking additional phase rotation into consideration as in this embodiment (2.2.4) has a lower PAPR than the 2x EHT-STF sequence obtained by simply repeating the 80MHz 2x HE-STF sequence as in the previous embodiment (2.2.2), which has the advantage of enabling estimation of subcarrier efficiency and effective AGC.

[0686] In addition, in the proposed 2x EHT-STF sequence, even if a specific coefficient other than 0 is set to elements with tone indexes of -504, +504, -520, +520, -1528, and +1528, there is no problem in terms of PAPR. However, from the perspective of transmission power, which is not PAPR, performance loss may occur because power is supplied to tones that do not need to be supplied. In particular, if a specific coefficient other than 0 is supplied to DC, problems such as DC offset may occur, resulting in signal distortion. In other words, by setting the elements with tone indexes of -504, +504, -520, +520, -1528, and +1528 to 0, it is possible to solve the problem of performance loss when AGC is operating in the receiving STA.

[0687] 2.2.5. 80MHz 2x HE-STF sequence repetition and additional phase rotation in 80MHz units on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[0688] EHTS -1528:8:1528={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0689] or

[0690] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0691] In all the above sequences, the following coefficients are replaced with 0:

[0692] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0693] The maximum PAPR is 8.7809.

[0694] When a 240MHz 2x EHT-STF sequence is constructed by puncturing 320MHz to form 240MHz, method 2.2.1 is preferred, as it provides implementation gains as a 2x EHT-STF sequence combined with 320MHz. Also, when considering PAPR and various RF capability situations, method 2.2.3 may also be preferred, but implementation overhead may increase. Method 2.2.5 (multiplying all parts excluding the primary 80 or the lowest frequency 80MHz by -1) is more advantageous from an implementation standpoint.

[0695] The above proposes a 2x EHT-STF sequence for a contiguous 240 MHz situation. The same sequence can be used for non-contiguous 160+80 MHz. That is, among the 2x EHT-STF sequences for contiguous 240 MHz, the sequence corresponding to the low 80 / 160 MHz is applied to the low 80 / 160 MHz or primary 80 / 160 MHz of non-contiguous 160+80 MHz, and among the 2x EHT-STF sequences for contiguous 240 MHz, the sequence corresponding to the high 160 / 80 MHz is applied to the high 160 / 80 MHz or the other 160 / 80 MHz of non-contiguous 160+80 MHz. For example, considering the sequence proposed in 2.2.5, the sequence for non-contiguous 160+80 MHz can be expressed as follows:

[0696] Contiguous 240MHz

[0697] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0698] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0699] Non-contiguous 160+80MHz (160MHz is located at low frequency and 80MHz is located at high frequency, or primary 160MHz is contiguous)

[0700] Low 160MHz or primary 160MHz

[0701] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0702] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0703] High 80 MHz or the other 80 MHz

[0704] EHTS -504:5:504 ={-M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0705] EHTS -504 =EHTS 504 =0

[0706] Non-contiguous 160+80MHz (80MHz is located at low frequency and 160MHz is located at high frequency, or only the primary 80MHz is contiguous)

[0707] Low 80MHz or primary 80MHz

[0708] EHTS -504:5:504 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0709] EHTS -504 =EHTS 504 =0

[0710] High 160MHz or the other 160MHz

[0711] EHTS -1016:8:1016 ={-M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0712] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0713] This specification also proposes a 2x EHT-STF sequence that minimizes the maximum PAPR in a situation where the preamble puncturing pattern and full bandwidth allocation (ie, non-preamble puncturing) are taken into consideration.

[0714] The following shows the non-preamble puncturing and preamble puncturing that are considered at 320 MHz:

[0715] Full band allocation:[OOOO OOOO OOOO OOOO]

[0716] Preamble puncturing

[0717] [XXOO OOOO OOOO OOOO]

[0718] [OOXX OOOO OOOO OOOO]

[0719] [OOOO XXOO OOOO OOOO]

[0720] [OOOO OOXX OOOO OOOO]

[0721] [OOOO OOOO XXOO OOOO]

[0722] [OOOO OOOO OOXX OOOO]

[0723] [OOOO OOOO OOOO XXOO]

[0724] [OOOO OOOO OOOO OOXX]

[0725] [XXXX OOOO OOOO OOOO]

[0726] [OOOO XXXX OOOO OOOO]

[0727] [OOOO OOOO XXXX OOOO]

[0728] [OOOO OOOO OOOO XXXX]

[0729] In the above, O or X means that a particular 20MHz channel is not punctured or is punctured, and the 20MHz channels are listed in order from lowest frequency to highest frequency.

[0730] Also, the following shows non-preamble puncturing and preamble puncturing that are considered at 240 MHz.

[0731] Full band allocation:[OOOO OOOO OOOO]

[0732] Preamble puncturing

[0733] [XXOO OOOO OOOO]

[0734] [OOXX OOOO OOOO]

[0735] [OOOO XXOO OOOO]

[0736] [OOOO OOXX OOOO]

[0737] [OOOO OOOO XXOO]

[0738] [OOOO OOOO OOXX]

[0739] [XXXX OOOO OOOO]

[0740] [OOOO XXXX OOOO]

[0741] [OOOO OOOO XXXX]

[0742] The preamble puncturing pattern is indicated by the Punctured Channel Information field of the U-SIG (U-SIG-2), which consists of 5 bits.

[0743] Specifically, when a PPDU is transmitted using a non-OFDMA method, the 5 bits of the Punctured Channel Information field are set according to the items in the following table to signal the non-OFDMA puncturing pattern for the entire PPDU bandwidth. The following table defines the preamble puncturing patterns in the non-OFDMA method for each PPDU bandwidth. Values ​​that are not defined in the Punctured Channel Information field are valid.

[0744] JPEG2023518733000009.jpg64145

[0745] JPEG2023518733000010.jpg107131

[0746] JPEG2023518733000011.jpg116144

[0747] As another example, when a PPDU is transmitted using the OFDMA method, if the bandwidth is specified as 80 / 160 / 320 MHz based on the BW (bandwidth) field of U-SIG-1, a 4-bit bitmap (the last bit is ignored) in the Punctured Channel Information field can indicate whether or not to puncture a 20 MHz channel for each 80 MHz segment. The 4-bit bitmap is applied from the lowest bit to the highest bit, from the lowest frequency 20 MHz channel to the highest frequency 20 MHz channel. When each bit in the 4-bit bitmap is 0, the corresponding 20 MHz channel is punctured, and when each bit in the 4-bit bitmap is 1, the corresponding 20 MHz channel is not punctured. The permitted puncturing patterns for an 80 MHz segment are as follows: 0111, 1011, 1101, 1110, 0011, 1100, and 1001. Other field values ​​are also valid in addition to the permitted puncturing patterns. The field values ​​for the puncturing patterns may be different for each other 80 MHz.

[0748] In the following proposal, PAPR refers to the largest PAPR value among multiple RUs, RU combinations, and preamble puncturing patterns. In addition, the sequence is optimized from the perspective of PAPR, and when calculating PAPR, bandwidth is considered only in contiguous situations, but the proposed sequence is also applicable to non-contiguous situations.

[0749] 2.3.320MHz 2x EHT STF sequence

[0750] We propose a method of simply repeating the existing 80MHz 2x HE STF sequence and a sequence that reduces PAPR by repeating this sequence and applying additional phase rotation in 20 / 40 / 80MHz units to channels other than the primary channel (or a relatively low-frequency 80MHz channel).We also propose a method of simply repeating the existing 160MHz 2x HE STF sequence and a sequence that reduces PAPR by repeating this sequence and applying additional phase rotation in 20 / 40 / 80 / 160MHz units to the secondary 160MHz channel (or a relatively high-frequency 160MHz channel).For reference, all PAPRs below are calculated when a 4x IFFT is applied and are in dB units.

[0751] 2.3.1.80MHz 2x HE STF sequence repetition

[0752] The existing 80MHz 2x HE STF sequence can be repeated four times to form a 2x EHT STF sequence, as follows:

[0753] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0754] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS2040 =0

[0755] The maximum PAPR is 10.8833.

[0756] 2.3.2. 80MHz 2x HE STF sequence repetition and additional phase rotation in 20MHz increments on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[0757] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1-M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0758] In the above sequence, the following coefficients are replaced with 0:

[0759] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0760] The maximum PAPR is 7.9806.

[0761] 2.3.3. 80MHz 2x HE STF sequence repetition and additional phase rotation in 40MHz increments on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[0762] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0763] or

[0764] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0765] In all the above sequences, the following coefficients are replaced with 0:

[0766] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0767] The maximum PAPR is 8.9154.

[0768] 2.3.4. 80MHz 2x HE STF sequence repetition and additional phase rotation in 80MHz units on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[0769] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0770] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0771] The maximum PAPR is 9.7431.

[0772] 2.3.5.160MHz 2x HE STF sequence repetition

[0773] The existing 160MHz 2x HE STF sequence can be repeated twice to form a 2x EHT STF sequence, as follows:

[0774] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0775] In all the above sequences, the following coefficients are replaced with 0:

[0776] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8=EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0777] The maximum PAPR is 9.0115.

[0778] 2.3.6. 160MHz 2x HE STF sequence repetition and additional phase rotation in 20MHz increments on the secondary channel (or a 160MHz channel with a relatively high frequency)

[0779] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0780] or

[0781] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0782] or

[0783] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0784] Or

[0785] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0786] Or

[0787] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0788] Or

[0789] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0790] Or

[0791] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0792] Or

[0793] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0794] Or

[0795] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0796] Or

[0797] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0798] Or

[0799] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0800] Or

[0801] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0802] Or

[0803] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0804] Or

[0805] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0806] Or

[0807] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0808] Or

[0809] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0810] Or

[0811] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0812] Or

[0813] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0814] Or

[0815] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0816] Or

[0817] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0818] Or

[0819] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0-M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0820] Or

[0821] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0822] Or

[0823] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0824] Or

[0825] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0826] Or

[0827] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0828] Or

[0829] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0830] Or

[0831] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0832] Or

[0833] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0834] Or

[0835] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0836] Or

[0837] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0838] Or

[0839] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0840] Or

[0841] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0842] Or

[0843] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0844] Or

[0845] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0846] Or

[0847] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0848] Or

[0849] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0850] Or

[0851] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0852] Or

[0853] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0854] Or

[0855] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0856] Or

[0857] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0858] Or

[0859] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0860] Or

[0861] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0862] Or

[0863] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0864] Or

[0865] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0866] Or

[0867] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0868] Or

[0869] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0870] Or

[0871] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0872] Or

[0873] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0874] Or

[0875] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0876] Or

[0877] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0878] Or

[0879] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0880] Or

[0881] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0882] Or

[0883] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0884] Or

[0885] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0886] Or

[0887] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0888] Or

[0889] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0890] Or

[0891] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0892] Or

[0893] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0894] Or

[0895] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0896] Or

[0897] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0-M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0898] Or

[0899] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0900] Or

[0901] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0902] Or

[0903] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0904] Or

[0905] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0906] Or

[0907] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0908] Or

[0909] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0910] Or

[0911] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0912] Or

[0913] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0914] Or

[0915] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0916] Or

[0917] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1- M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0918] Or

[0919] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0920] Or

[0921] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1-M 0 M -1 -M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0922] Or

[0923] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0924] Or

[0925] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0926] Or

[0927] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0928] Or

[0929] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M -1 -M -1 M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0930] or

[0931] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0-M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0932] or

[0933] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0 -M 1 M -1 M -1 M}*(1+j) / sqrt(2)

[0934] or

[0935] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[0936] In all the above sequences, the following coefficients are replaced with 0:

[0937] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032=EHTS 2040 =0

[0938] The maximum PAPR is 9.0115.

[0939] 2.3.7. 160MHz 2x HE STF sequence repetition and additional phase rotation in 40MHz increments on the secondary channel (or a 160MHz channel with a higher frequency)

[0940] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0941] or

[0942] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0943] In all the above sequences, the following coefficients are replaced with 0:

[0944] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0945] The maximum PAPR is 9.0115.

[0946] 2.3.8. 160MHz 2x HE STF sequence repetition and additional phase rotation in 80MHz increments on the secondary channel (or a 160MHz channel with a higher frequency)

[0947] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0948] In the above sequence, the following coefficients are replaced with 0:

[0949] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0950] The maximum PAPR is 9.1649.

[0951] 2.3.9. 160MHz 2x HE STF sequence repetition and additional phase rotation in 160MHz units on the secondary channel (or a 160MHz channel with a relatively high frequency)

[0952] EHTS -2040:8:2040={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0953] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0954] The maximum PAPR is 9.7066.

[0955] From a PAPR perspective, proposal 2.3.2 is appropriate. From an implementation perspective, proposal 2.3.4 is more advantageous, as it repeats the 11ax 80MHz phase rotation and multiplies the high-frequency 160MHz or secondary 160 portion by -1. Alternatively, proposal 2.3.8 is more advantageous, as it repeats the 11ax 160MHz phase rotation and multiplies the high-frequency 80MHz portion of the high-frequency 160MHz or secondary 160 portion by -1.

[0956] The 2x EHT STF sequence for contiguous 320MHz is proposed above. The same sequence can be used for non-contiguous 160+160MHz. That is, the sequence corresponding to the low 160MHz of the 2x EHT STF sequence for contiguous 320MHz is applied to the low 160MHz or primary 160MHz of non-contiguous 160+160MHz, and the sequence corresponding to the high 160MHz of the 2x EHT STF sequence for contiguous 320MHz is applied to the high 160MHz or secondary 160MHz of non-contiguous 160+160MHz. For example, considering the sequence proposed in 2.3.4, the sequence for non-contiguous 160+160MHz can be expressed as follows:

[0957] Contiguous 320MHz

[0958] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0959] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0960] Non-contiguous 160+160MHz

[0961] Low 160MHz or primary 160MHz

[0962] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0963] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0964] High 160MHz or secondary 160MHz

[0965] EHTS -1016:8:1016 ={-M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0966] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0967] As another example, considering the sequence proposed in 4.1.8, a non-contiguous 160+160MHz sequence can be expressed as follows:

[0968] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0969] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0970] Non-contiguous 160+160MHz

[0971] Low 160MHzまたはprimary 160MHz

[0972] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[0973] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0974] High 160MHzまたはsecondary 160MHz

[0975] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0976] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[0977] 2.4.240MHz 2x EHT STF sequence

[0978] Of the 2x EHT STF proposed at 320 MHz, the punctured 80 MHz 2x EHT STF portion can be removed and proposed for 240 / 160+80 / 80+160 MHz.

[0979] 2.4.1.320MHz 2x EHT STF puncturing

[0980] For example, assume the following 320MHz 2x EHT STF sequence is used:

[0981] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0982] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0983] In this case, if the first 80 MHz is punctured, the following 240 MHz 2x EHT STF sequence can be used.

[0984] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0985] EHTS-1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0986] If the second 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used:

[0987] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0988] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0989] If the third 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used:

[0990] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0991] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0992] If the fourth 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used.

[0993] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0994] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[0995] As another example, assume the following 320MHz 2x EHT STF sequence is used:

[0996] EHTS -2040:8:2040 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[0997] EHTS -2040 =EHTS -1032 =EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =EHTS 1032 =EHTS 2040 =0

[0998] In this case, if the first 80 MHz is punctured, the following 240 MHz 2x EHT STF sequence can be used.

[0999] EHTS -1528:8:1528 ={-M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1000] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1001] If the second 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used:

[1002] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1003] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1004] If the third 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used.

[1005] EHTS-1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1006] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1007] If the fourth 80MHz is punctured, the following 240MHz 2x EHT STF sequence can be used.

[1008] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[1009] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1010] Furthermore, we propose a method of simply repeating the existing 80MHz 2x HE STF sequence, and a sequence that repeats this and applies additional phase rotation in 20 / 40 / 80MHz units to channels other than the primary channel (or a relatively low-frequency 80MHz channel) to reduce the PAPR.

[1011] 2.4.2.80MHz 2x HE STF sequence repetition

[1012] The existing 80MHz 2x HE STF sequence can be repeated three times to form a 2x EHT STF sequence, as follows:

[1013] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M

[1014] 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[1015] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1016] The maximum PAPR is 9.6339.

[1017] 2.4.3. 80MHz 2x HE STF sequence repetition and additional phase rotation in 20MHz increments on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[1018] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[1019] or

[1020] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 M -1 -M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M 1 -M 1 -M}*(1+j) / sqrt(2)

[1021] In all the above sequences, the following coefficients are replaced with 0:

[1022] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1023] The maximum PAPR is 8.0381.

[1024] 2.4.4. 80MHz 2x HE STF sequence repetition and additional phase rotation in 40MHz increments on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[1025] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1026] or

[1027] EHTS -1528:8:1528={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1028] In all the above sequences, the following coefficients are replaced with 0:

[1029] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1030] The maximum PAPR is 8.9149.

[1031] 2.4.5.80MHz 2x HE STF sequence repetition and additional phase rotation in 80MHz units on the secondary channel (or any channel other than the lowest frequency 80MHz channel)

[1032] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1033] or

[1034] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1035] In all the above sequences, the following coefficients are replaced with 0:

[1036] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1037] The maximum PAPR is 8.9149.

[1038] When a 240MHz 2x EHT STF sequence is constructed by puncturing 320MHz to form 240MHz, method 2.4.1 is preferred, as it provides implementation gains as a 2x EHT STF sequence combined with 320MHz. Also, when considering PAPR and various RF capability situations, method 2.4.3 may also be preferred, but implementation overhead may increase. Method 2.4.5 (multiplying all parts except the primary 80 or the lowest frequency 80MHz by -) is more advantageous from an implementation standpoint.

[1039] The 2x EHT STF sequence for contiguous 240 MHz is proposed above. The same sequence can be used for non-contiguous 160+80 MHz. That is, among the 2x EHT STF sequences for contiguous 240 MHz, the sequence corresponding to the low 80 / 160 MHz is applied to the low 80 / 160 MHz or primary 80 / 160 MHz of non-contiguous 160+80 MHz. Among the 1x EHT STF sequences for contiguous 240 MHz, the sequence corresponding to the high 160 / 80 MHz is applied to the high 160 / 80 MHz or the other 160 / 80 MHz of non-contiguous 160+80 MHz. For example, considering the sequence proposed in 2.4.5, the sequence for non-contiguous 160+80 MHz can be expressed as follows:

[1040] Contiguous 240MHz

[1041] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1042] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1043] Non-contiguous 160+80MHz (160MHz is located at low frequency and 80MHz is located at high frequency, or primary 160MHz is continuous)

[1044] Low 160MHz or primary 160MHz

[1045] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1046] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[1047] High 80 MHz or the other 80 MHz

[1048] EHTS -504:5:504 ={-M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1049] EHTS -504 =EHTS 504 =0

[1050] Non-contiguous 160+80MHz (80MHz is located at low frequency and 160MHz is located at high frequency, or only the primary 80MHz is contiguous)

[1051] Low 80MHz or primary 80MHz

[1052] EHTS -504:5:504 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[1053] EHTS -504 =EHTS 504 =0

[1054] High 160MHz or the other 160MHz

[1055] EHTS -1016:8:1016 ={-M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1056] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[1057] As another example, assume that the following 240 MHz 2x EHT STF sequence is used:

[1058] Contiguous 240MHz

[1059] EHTS -1528:8:1528 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1060] EHTS -1528 =EHTS -520 =EHTS -504 =EHTS 504 =EHTS 520 =EHTS 1528 =0

[1061] Non-contiguous 160+80MHz (160MHz is located at low frequency and 80MHz is located at high frequency, or primary 160MHz is continuous)

[1062] Low 160MHz or primary 160MHz

[1063] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[1064] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[1065] High 80 MHz or the other 80 MHz

[1066] EHTS -504:5:504 ={-M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1067] EHTS -504 =EHTS 504 =0

[1068] Non-contiguous 160+80MHz (80MHz is located at low frequency and 160MHz is located at high frequency, or only the primary 80MHz is contiguous)

[1069] Low 80MHz or primary 80MHz

[1070] EHTS -504:5:504 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[1071] EHTS -504 =EHTS 504 =0

[1072] High 160MHz or the other 160MHz

[1073] EHTS -1016:8:1016 ={M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1074] EHTS -1016 =EHTS -8 =EHTS8=EHTS 1016 =0

[1075] FIG. 22 is a procedure flow diagram showing the operation of the transmitting device according to this embodiment.

[1076] The above-mentioned STF sequence (ie, EHT-STF / EHTS sequence) is transmitted according to the example shown in FIG.

[1077] The example of FIG. 22 is performed in a transmitting device (AP and / or non-AP STA).

[1078] Some of the steps (or detailed sub-steps described later) in the example of FIG. 22 are omitted.

[1079] In step S2210, the transmitting device may obtain control information for the STF sequence. For example, the transmitting device may obtain information regarding a bandwidth (e.g., 80 / 160 / 240 / 320 MHz) applied to the STF sequence. Additionally or alternatively, the transmitting device may obtain information regarding characteristics applied to the STF sequence (e.g., information instructing the generation of a 1x, 2x, or 4x sequence).

[1080] In step S2220, the transmitting device may configure or generate a control signal / field (eg, EHT STF signal / field) based on the acquired control information (eg, information about bandwidth).

[1081] Step S2220 may further include specific sub-steps.

[1082] For example, step S2220 may further include selecting one STF sequence from among multiple STF sequences based on the control information obtained through S2210.

[1083] Additionally or alternatively, step S2220 may further include the step of performing power boosting.

[1084] Step S2220 can also be called a step for generating a sequence.

[1085] In step S2230, the transmitting device can transmit the signal / field / sequence configured through step S2220 to the receiving device based on step S2230.

[1086] Step S2220 may further include specific sub-steps.

[1087] For example, the transmitting device may perform a phase rotation step. Specifically, the transmitting device may perform a phase rotation step in units of 20 MHz*N (N=integer) on the sequence generated through step S2220.

[1088] Additionally or alternatively, the transmitter may perform at least one of the following operations: CSD, spatial mapping, IDFT / IFFT operation, GI insertion, etc.

[1089] The signal / field / sequence constructed according to this specification is transmitted in the form shown in FIG.

[1090] The example in FIG. 22 relates to an example of a transmitting device (AP and / or non-AP STA).

[1091] As shown in FIG. 1, the transmitting device may include a memory 112, a processor 111, and a transceiver 113.

[1092] The memory 112 may store information for multiple STF sequences as described herein, and may also store control information for STF sequence / PPDU generation.

[1093] The processor 111 can generate various sequences (e.g., STF sequences) and configure a PPDU based on the information stored in the memory 112. An example of a PPDU generated by the processor 111 is shown in FIG.

[1094] The processor 111 may perform some of the operations shown in Figure 22. For example, the processor 111 may obtain control information for generating an STF sequence and configure the STF sequence.

[1095] For example, the processor 111 may include additional detailed units. The detailed units included in the processor 111 are configured as shown in Fig. 19. That is, as shown, the processor 111 may perform operations such as CSD, spatial mapping, IDFT / IFFT operations, and GI insertion.

[1096] The illustrated transceiver 113 includes an antenna and can perform analog signal processing. Specifically, the processor 111 can control the transceiver 113 to transmit PPDUs generated by the processor 111.

[1097] FIG. 23 is a procedure flow diagram showing the operation of the receiving device according to this embodiment.

[1098] The above-mentioned STF sequence (ie, EHT-STF / EHTS sequence) is transmitted according to the example shown in FIG.

[1099] The example of FIG. 23 is performed in a receiving device (AP and / or non-AP STA).

[1100] Some of the steps (or detailed sub-steps described later) in the example of FIG. 23 are omitted.

[1101] In step S2310, the receiving device can receive a signal / field including an STF sequence (i.e., an EHT-STF / EHTS sequence) via step S2310. The received signal has the form shown in FIG.

[1102] The sub-steps of step S2310 are determined based on step S2230, i.e., step S2310 may perform operations to restore the results of the phase rotation CSD, spatial mapping, IDFT / IFFT operations, and GI insertion operations applied in step S2230.

[1103] In step S2310, the STF sequence can perform various functions such as finding the time / frequency synchronization of the signal or estimating the AGC gain.

[1104] In step S2320, the receiving device can perform decoding on the received signal based on the STF sequence.

[1105] For example, step S2320 may include decoding a data field of a PPDU including an STF sequence, i.e., the receiving device may decode a signal included in the data field of a successfully received PPDU based on the STF sequence.

[1106] In step S2330, the receiving device can process the data decoded through step S2320.

[1107] For example, the receiving device may perform a processing operation of transmitting the decoded data to an upper layer (e.g., MAC layer) through step S2320, and may perform subsequent operations if the upper layer instructs the PHY layer to generate a signal corresponding to the data transmitted to the upper layer.

[1108] The example of FIG. 23 relates to an example of a transmitting device (AP and / or non-AP STA).

[1109] As shown in FIG. 1, the transmitting device may include a memory 112, a processor 111, and a transceiver 113.

[1110] The memory 112 may store information for multiple STF sequences as described herein, and may also store control information for STF sequence / PPDU generation.

[1111] The processor 111 can generate various sequences (e.g., STF sequences) and configure a PPDU based on the information stored in the memory 112. An example of a PPDU generated by the processor 111 is shown in FIG.

[1112] The processor 111 may perform some of the operations shown in Figure 22. For example, the processor 111 may obtain control information for generating an STF sequence and configure the STF sequence.

[1113] For example, the processor 111 may include additional detailed units. The detailed units included in the processor 111 are configured as shown in Fig. 19. That is, as shown, the processor 111 may perform operations such as CSD, spatial mapping, IDFT / IFFT operations, and GI insertion.

[1114] The illustrated transceiver 113 includes an antenna and can perform analog signal processing. Specifically, the processor 111 can control the transceiver 113 to transmit PPDUs generated by the processor 111.

[1115] 23 are implemented by the transceiver 113. Specifically, the analog RF processing shown is included in the transceiver 113.

[1116] In the following, the above-mentioned embodiment will be described with reference to FIGS.

[1117] FIG. 24 is a flowchart showing a procedure in which a transmitting STA transmits a PPDU according to this embodiment.

[1118] The example of Figure 24 is executed in a network environment that supports a next-generation WLAN system (IEEE 802.11be or EHT WLAN system), which is an improved WLAN system of the 802.11ax system and can satisfy backward compatibility with the 802.11ax system.

[1119] The example of Figure 24 is performed in a transmitting STA, which may correspond to an AP (access point). The receiving STA of Figure 24 may correspond to a STA supporting an EHT (Extremely High Throughput) wireless LAN system.

[1120] This embodiment proposes a method for configuring a 2x STF sequence that is mapped to an RU or MRU (Multi-RU) when transmitting a TB PPDU via a wideband (240 MHz or 320 MHz).

[1121] In step S2410, a transmitting station (STA) generates a PPDU (Physical Protocol Data Unit).

[1122] In step S2420, the transmitting STA transmits the PPDU to the receiving STA via a broadband.

[1123] The PPDU includes a Short Training Field (STF) signal.

[1124] The STF signal is generated based on a first STF sequence for the wideband.

[1125] When the wideband is a 320 MHz band, the first STF sequence is defined as a sequence including an M sequence as follows:

[1126] {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1127] In this case, sqrt() represents the square root.

[1128] The M sequence is defined as follows: The M sequence is the same as the M sequence defined in the 802.11ax WLAN system.

[1129] M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1}

[1130] The first STF sequence is arranged at intervals of 8 tones from the lowest tone with a tone index of -2040 to the highest tone with a tone index of +2040. In this case, elements of the first STF sequence with tone indexes of -8, +8, -1016, +1016, -1032, +1032, -2040, and +2040 are set to 0.

[1131] The first STF sequence is a sequence in which a phase rotation is applied to a repeated sequence of the second STF sequence. The second STF sequence is an STF sequence for the 80 MHz band defined in the 802.11ax WLAN system. The second STF sequence is defined as follows:

[1132] {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[1133] That is, the first STF sequence is obtained using the 2x HE-STF sequence for the 80 MHz band defined in the existing 802.11ax.

[1134] The wide band can include first to fourth 80 MHz bands. The first to fourth 80 MHz bands are arranged in order from lowest frequency to highest frequency. The phase rotation is applied to the second, third, or fourth 80 MHz band in the wide band. That is, the phase rotation is applied to the remaining 80 MHz bands excluding the first 80 MHz band, which has the lowest frequency.

[1135] As an example, the first STF sequence is obtained by applying phase rotation (multiplying by -1) to the 80 MHz channel with the first highest frequency (the fourth 80 MHz band) and the 80 MHz channel with the second highest frequency (the third 80 MHz band) in a sequence obtained by repeating the second STF sequence four times.

[1136] The PPDU is a trigger-based (TB) PPDU, i.e., the PPDU is triggered by a trigger frame.

[1137] The PPDU is received via a Resource Unit (RU) or Multi-RU (MRU), which may include a combination of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU, 26+52-tone RU, 242+484-tone RU, 2x996-tone RU, 484+996-tone RU, 3x996-tone RU, or 4x996-tone RU. If the wideband is a 320 MHz band, there are 148 26-tone RUs, 64 52-tone RUs, 32 106-tone RUs, 16 242-tone RUs, 8 484-tone RUs, 4 996-tone RUs, 16 26+52-tone RUs, 16 242+484-tone RUs, 2 2x996-tone RUs, 8 484+996-tone RUs, 4 3x996-tone RUs, and 1 4x996-tone RU. The largest PAPR value among the multiple RU combinations is regarded as the Max PAPR value of the first STF sequence.

[1138] In this case, the 26+52 tone RU is an MRU in which 26 tone RUs and 52 tone RUs are aggregated, the 242+484 tone RU is an MRU in which 242 tone RUs and 484 tone RUs are aggregated, the 484+996 tone RU is an MRU in which 484 tone RUs and 996 tone RUs are aggregated, the 2x996 tone RU is an MRU in which two 996 tone RUs are aggregated, the 3x996 tone RU is an MRU in which three 996 tone RUs are aggregated, and the 4x996 tone RU is an MRU in which four 996 tone RUs are aggregated.

[1139] The primary STF sequence is mapped to frequency tones as follows: The primary STF sequence is arranged at intervals of 8 tones from the lowest tone with a tone index of -2040 to the highest tone with a tone index of +2040. That is, each element of the primary STF sequence is mapped one by one to a frequency tone having the tone index.

[1140] However, the primary STF sequence is mapped to the tones included in the RU or MRU. That is, the primary STF sequence is mapped only to the tones included in the RU or MRU allocated by the trigger frame based on the tone index of the primary STF sequence. For example, if three 996-tone RUs are allocated by the trigger frame, the primary STF sequence is not mapped to the remaining 996-tone RU.

[1141] The STF signal is used for AGC (Automatic Gain Control) estimation in MIMO (Multiple Input Multiple Output) transmission.

[1142] The PPDU may include a legacy preamble, a control field, and a data field, in which the STF signal is included in the control field, and the control field and the data field may support an 802.11be WLAN system.

[1143] Specifically, the legacy field may include a Legacy-Short Training Field (L-STF), a Legacy-Long Training Field (L-LTF), a Legacy-Signal (L-SIG), and a Repeated L-SIG (RL-SIG). The control field may include a Universal-Signal (U-SIG), an EHT-STF, and an EHT-LTF. The STF signal is included in the EHT-STF. Since the PPDU is a TB PPDU, the control field may not include an Extremely High Throughput-Signal (EHT-SIG).

[1144] In addition, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is determined by performing 80 MHz puncturing (80 MHz-based preamble puncturing) on ​​the STF sequence for the 320 MHz / 160+160 MHz band (first STF sequence). That is, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is not separately defined, and the STF sequence can be obtained using the STF sequence for the 320 MHz / 160+160 MHz band (unified technology).

[1145] For example, since the STF sequence (first STF sequence) for the 320 MHz / 160+160 MHz band is defined as {M-1M-1M-1M0-M1M1-M1-M0M-1M-1M0-M1M1-M1-M0-M1M1-M1-M0M-1M-1M0-M1M1-M1-M0M-1M-1M0-M1M1-M1-M0M-1M-1M}*(1+j) / sqrt(2), the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is determined by the 80 MHz band to be punctured.

[1146] When the first 80 MHz of the 320 MHz / 160+160 MHz band is punctured, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is {M-1M-1M-1M0-M1M1-M1-M0-M1-M1M1-M0M-1-M-1M-1M0-M1-M1M1-M0M-1-M-1M-1M}*(1+j) / sqrt(2).

[1147] When the second 80 MHz of the 320 MHz / 160+160 MHz band is punctured, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is {M -1 M -1 M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2).

[1148] When the third 80 MHz of the 320 MHz / 160+160 MHz band is punctured, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is {M-1M-1M-1M0-M1M1-M1-M0M-1M-1M-1M0-M1M1-M1-M0-M1M1-M1-M0M-1M-1M-1M}*(1+j) / sqrt(2).

[1149] When the fourth 80 MHz of the 320 MHz / 160+160 MHz band is punctured, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is {M-1M-1M-1M0-M1M1-M1-M0M-1M-1M-1M0-M1M1-M1-M0-M1M1-M1-M0M-1M-1M-1M}*(1+j) / sqrt(2).

[1150] FIG. 25 is a flowchart showing a procedure for a receiving STA to receive a PPDU according to this embodiment.

[1151] The example of Figure 25 is executed in a network environment that supports a next-generation WLAN system (IEEE 802.11be or EHT WLAN system), which is an improved WLAN system of the 802.11ax system and can satisfy backward compatibility with the 802.11ax system.

[1152] The example of Figure 25 is executed in a receiving STA and may correspond to a STA supporting an EHT (Extremely High Throughput) wireless LAN system. The transmitting STA of Figure 25 may correspond to an AP (access point).

[1153] This embodiment proposes a method for configuring a 2x STF sequence that is mapped to an RU or MRU (Multi-RU) when transmitting a TB PPDU via a wideband (240 MHz or 320 MHz).

[1154] In step S2510, a receiving station (STA) receives a physical protocol data unit (PPDU) from a transmitting station via a broadband.

[1155] In step S2520, the receiving STA decodes the PPDU.

[1156] The PPDU includes a Short Training Field (STF) signal.

[1157] The STF signal is generated based on a first STF sequence for the wideband.

[1158] When the wideband is a 320 MHz band, the first STF sequence is defined as a sequence including an M sequence as follows:

[1159] {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2)

[1160] In this case, sqrt() represents the square root.

[1161] The M sequence is defined as follows: The M sequence is the same as the M sequence defined in the 802.11ax WLAN system.

[1162] M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1}

[1163] The first STF sequence is arranged at intervals of 8 tones from the lowest tone with a tone index of -2040 to the highest tone with a tone index of +2040. In this case, elements of the first STF sequence with tone indexes of -8, +8, -1016, +1016, -1032, +1032, -2040, and +2040 are set to 0.

[1164] The first STF sequence is a sequence in which a phase rotation is applied to a repeated sequence of the second STF sequence. The second STF sequence is an STF sequence for the 80 MHz band defined in the 802.11ax WLAN system. The second STF sequence is defined as follows:

[1165] {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M}*(1+j) / sqrt(2)

[1166] That is, the first STF sequence is obtained using the 2x HE-STF sequence for the 80 MHz band defined in the existing 802.11ax.

[1167] The wide band can include first to fourth 80 MHz bands. The first to fourth 80 MHz bands are arranged in order from lowest frequency to highest frequency. The phase rotation is applied to the second, third, or fourth 80 MHz band in the wide band. That is, the phase rotation is applied to the remaining 80 MHz bands excluding the first 80 MHz band, which has the lowest frequency.

[1168] As an example, the first STF sequence is obtained by applying phase rotation (multiplying by -1) to the 80 MHz channel with the highest frequency (the fourth 80 MHz band) and the 80 MHz channel with the second highest frequency (the third 80 MHz band) in a sequence obtained by repeating the second STF sequence four times.

[1169] The PPDU is a trigger-based (TB) PPDU, i.e., the PPDU is triggered by a trigger frame.

[1170] The PPDU is received via a Resource Unit (RU) or Multi-RU (MRU), which may include a combination of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU, 26+52-tone RU, 242+484-tone RU, 2x996-tone RU, 484+996-tone RU, 3x996-tone RU, or 4x996-tone RU. If the wideband is a 320 MHz band, there are 148 26-tone RUs, 64 52-tone RUs, 32 106-tone RUs, 16 242-tone RUs, 8 484-tone RUs, 4 996-tone RUs, 16 26+52-tone RUs, 16 242+484-tone RUs, 2 2x996-tone RUs, 8 484+996-tone RUs, 4 3x996-tone RUs, and 1 4x996-tone RU. The largest PAPR value among the multiple RU combinations is regarded as the Max PAPR value of the first STF sequence.

[1171] In this case, the 26+52 tone RU is an MRU in which 26 tone RUs and 52 tone RUs are aggregated, the 242+484 tone RU is an MRU in which 242 tone RUs and 484 tone RUs are aggregated, the 484+996 tone RU is an MRU in which 484 tone RUs and 996 tone RUs are aggregated, the 2x996 tone RU is an MRU in which two 996 tone RUs are aggregated, the 3x996 tone RU is an MRU in which three 996 tone RUs are aggregated, and the 4x996 tone RU is an MRU in which four 996 tone RUs are aggregated.

[1172] The primary STF sequence is mapped to frequency tones as follows: The primary STF sequence is arranged at intervals of 8 tones from the lowest tone with a tone index of -2040 to the highest tone with a tone index of +2040. That is, each element of the primary STF sequence is mapped one by one to a frequency tone having the tone index.

[1173] However, the primary STF sequence is mapped to the tones included in the RU or MRU. That is, the primary STF sequence is mapped only to the tones included in the RU or MRU allocated by the trigger frame based on the tone index of the primary STF sequence. For example, if three 996-tone RUs are allocated by the trigger frame, the primary STF sequence is not mapped to the remaining 996-tone RU.

[1174] The STF signal is used for AGC (Automatic Gain Control) estimation in MIMO (Multiple Input Multiple Output) transmission.

[1175] The PPDU may include a legacy preamble, a control field, and a data field, in which the STF signal is included in the control field, and the control field and the data field may support an 802.11be WLAN system.

[1176] Specifically, the legacy field may include a Legacy-Short Training Field (L-STF), a Legacy-Long Training Field (L-LTF), a Legacy-Signal (L-SIG), and a Repeated L-SIG (RL-SIG). The control field may include a Universal-Signal (U-SIG), an EHT-STF, and an EHT-LTF. The STF signal is included in the EHT-STF. Since the PPDU is a TB PPDU, the control field may not include an Extremely High Throughput-Signal (EHT-SIG).

[1177] In addition, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is determined by puncturing 80 MHz (80 MHz base preamble puncturing) the STF sequence for the 320 MHz / 160+160 MHz band (first STF sequence). That is, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is not separately defined, and the STF sequence can be obtained using the STF sequence for the 320 MHz / 160+160 MHz band (unified technology).

[1178] For example, since the STF sequence (first STF sequence) for the 320 MHz / 160+160 MHz band is defined as {M-1M-1M-1M0-M1M1-M1-M0M-1M-1M0-M1M1-M1-M0-M1M1-M1-M0M-1M-1M0-M1M1-M1-M0M-1M-1M0-M1M1-M1-M0M-1M-1M}*(1+j) / sqrt(2), the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is determined by the 80 MHz band to be punctured.

[1179] When the first 80 MHz of the 320 MHz / 160+160 MHz band is punctured, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is {M-1M-1M-1M0-M1M1-M1-M0-M1-M1M1-M0M-1-M-1M-1M0-M1-M1M1-M0M-1-M-1M-1M}*(1+j) / sqrt(2).

[1180] When the second 80 MHz of the 320 MHz / 160+160 MHz band is punctured, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is {M -1 M -1 M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2).

[1181] When the third 80 MHz of the 320 MHz / 160+160 MHz band is punctured, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is {M-1M-1M-1M0-M1M1-M1-M0M-1M-1M-1M0-M1M1-M1-M0-M1M1-M1-M0M-1M-1M-1M}*(1+j) / sqrt(2).

[1182] When the fourth 80 MHz of the 320 MHz / 160+160 MHz band is punctured, the STF sequence for the 240 MHz / 160+80 MHz / 80+160 MHz band is {M-1M-1M-1M0-M1M1-M1-M0M-1M-1M-1M0-M1M1-M1-M0-M1M1-M1-M0M-1M-1M-1M}*(1+j) / sqrt(2).

[1183] 3.Device configuration

[1184] The technical features of the present specification described above are applicable to various devices and methods. For example, the technical features of the present specification described above are performed / supported by the device of FIG. 1 and / or FIG. 19. For example, the technical features of the present specification described above are applied to only a part of FIG. 1 and / or FIG. 19. For example, the technical features of the present specification described above are implemented based on the processing chips 114 and 124 of FIG. 1, the processors 111 and 121 and memories 112 and 122 of FIG. 1, or the processor 610 and memory 620 of FIG. 19. For example, the device of the present specification receives a Physical Protocol Data Unit (PPDU) from a transmitting STA via a wideband and decodes the PPDU.

[1185] The technical features of the present specification are implemented based on a computer-readable medium (CRM). For example, the CRM proposed by the present specification is at least one computer-readable medium including instructions that are executed by at least one processor.

[1186] The CRM may store instructions for performing operations including receiving a PPDU (Physical Protocol Data Unit) from a transmitting STA via a broadband and decoding the PPDU. The instructions stored in the CRM herein are executed by at least one processor. The at least one processor associated with the CRM herein may be the processors (111, 121) or processing chips (114, 124) of FIG. 1, or the processor 610 of FIG. 19. Meanwhile, the CRM herein may be the memory (112, 122) of FIG. 1, the memory 620 of FIG. 19, or a separate external memory / storage medium / disk.

[1187] The technical features of the present specification described above can be applied to various applications and business models, for example, the technical features described above can be applied to wireless communication in devices that support artificial intelligence (AI).

[1188] Artificial intelligence refers to the field that studies artificial intelligence or the methodologies for creating it, while machine learning refers to the field that defines various problems to be dealt with in the field of artificial intelligence and studies the methodologies for solving them. Machine learning can also be defined as an algorithm that improves its performance for a certain task through continuous experience with that task.

[1189] An artificial neural network (ANN) is a model used in machine learning that is composed of artificial neurons (nodes) that form a network of synaptic connections and has problem-solving capabilities. An artificial neural network is defined by the connection patterns between neurons in different layers, a learning process that updates the model parameters, and an activation function that generates output values.

[1190] An artificial neural network can include an input layer, an output layer, and optionally one or more hidden layers. Each layer contains one or more neurons, and an artificial neural network can include synapses connecting neurons. In an artificial neural network, each neuron can output a function value of an activation function in response to input signals, weights, and biases received via synapses.

[1191] Model parameters are parameters determined through learning, such as synaptic connection weights and neuron biases, while hyperparameters are parameters that must be set before learning in machine learning algorithms, such as the learning rate, number of iterations, mini-batch size, and initialization function.

[1192] The goal of training an artificial neural network is to determine the model parameters that minimize the loss function, which is used as an index to determine the optimal model parameters in the training process of the artificial neural network.

[1193] Depending on the learning method, machine learning can be classified as supervised learning, unsupervised learning, and reinforcement learning.

[1194] Supervised learning is a method of training an artificial neural network when labels for training data are given, and refers to the correct answer (or resulting value) that the artificial neural network needs to infer when training data called labels are input to the artificial neural network. Unsupervised learning is a method of training an artificial neural network when labels for training data are not given. Reinforcement learning is a learning method that trains an agent defined in an environment to select actions or action sequences that maximize cumulative rewards in each state.

[1195] Among artificial neural networks, machine learning implemented as a deep neural network (DNN) with multiple hidden layers is also called deep learning, and deep learning is a part of machine learning. In the following, machine learning will be used to include deep learning.

[1196] The above-mentioned technical features are also applicable to wireless communication of robots.

[1197] A robot is a machine that automatically processes or operates a given task using its own capabilities. In particular, a robot that has the ability to recognize its environment, make its own decisions, and execute its actions is called an intelligent robot.

[1198] Robots can be classified according to their intended use and field, such as industrial, medical, domestic, and military. Robots have drive units including actuators or motors, allowing them to perform various physical actions such as moving robot joints. Mobile robots also have drive units including wheels, brakes, and propellers, allowing them to move on the ground or fly in the air.

[1199] The technical features described above also apply to devices that support augmented reality.

[1200] Augmented reality is a general term for virtual reality (VR), augmented reality (AR), and mixed reality (MR). VR technology provides real-world objects and backgrounds only as CG images, AR technology provides virtual CG images on top of images of real objects, and MR technology is a computer graphics technology that mixes and combines virtual objects into the real world.

[1201] MR technology is similar to AR technology in that it displays virtual objects together, but the difference is that in AR technology, virtual objects are used to complement each other, while in MR technology, virtual objects are used with equal characteristics.

[1202] XR technology is applied to HMDs (Head-Mount Displays), HUDs (Head-Up Displays), mobile phones, tablet PCs, laptops, desktops, TVs, digital signage, etc., and devices to which XR technology is applied can be called XR devices.

[1203] The claims described herein may be combined in various ways, for example, the technical features of the method claims herein may be combined and implemented in an apparatus, the technical features of the device claims herein may be combined and implemented in a method, the technical features of the method claims herein may be combined with the technical features of the device claims herein may be combined and implemented in an apparatus, and the technical features of the method claims herein may be combined with the technical features of the device claims herein may be combined and implemented in a method.

Claims

1. In a wireless LAN system, A receiving station (STA) receives a physical protocol data unit (PPDU) from a transmitting station via a broadband signal; and the receiving STA decoding the PPDU, The PPDU includes a Short Training Field (STF) signal, the STF signal is generated based on a first STF sequence for the wideband; When the wideband is a 320 MHz band, the first STF sequence is defined as a sequence including an M sequence as follows: {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2), sqrt() represents the square root, The M-sequence is defined as follows: M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1} In the first STF sequence, elements having tone indices of −8, +8, −1016, +1016, −1032, +1032, −2040, and +2040 are set to 0.

2. the PPDU is a trigger-based (TB) PPDU, The PPDU is received via a Resource Unit (RU) or a Multi-RU (MRU), the RU or the MRU comprises a combination of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU, 26+52-tone RU, 242+484-tone RU, 2x996-tone RU, 484+996-tone RU, 3x996-tone RU, or 4x996-tone RU; The 26+52 tone RU is an MRU in which a 26 tone RU and a 52 tone RU are aggregated, The 242+484 tone RU is an MRU in which a 242 tone RU and a 484 tone RU are aggregated, The 484+996 tone RU is an MRU in which a 484 tone RU and a 996 tone RU are aggregated, The 2x996-tone RU is an MRU in which two 996-tone RUs are aggregated, The 3x996-tone RU is an MRU in which three 996-tone RUs are aggregated, The method of claim 1 , wherein the 4× 996-tone RU is an MRU in which four 996-tone RUs are aggregated.

3. The method of claim 1 , wherein the first STF sequence is mapped to tones included in the RU or the MRU.

4. the first STF sequence is a sequence in which a phase rotation is applied to a sequence in which the second STF sequence is repeated, The second STF sequence is an STF sequence for the 80 MHz band defined in an 802.11ax wireless LAN system, the wide band includes first through fourth 80 MHz bands; the first to fourth 80 MHz bands are arranged in order from lowest frequency to highest frequency, 2. The method of claim 1, wherein the phase rotation is applied to the second, third, or fourth 80 MHz band in the wide band.

5. The second STF sequence is defined as follows: The method of claim 4, wherein {M −1 M −1 −M −1 M 0 −M 1 M 1 −M 1 −M}*(1+j) / sqrt(2).

6. 2. The method of claim 1, wherein the first STF sequence is spaced 8 tones apart from the lowest tone having a tone index of -2040 to the highest tone having a tone index of +2040.

7. The method of claim 1 , wherein the STF signal is used for automatic gain control (AGC) estimation in multiple input multiple output (MIMO) transmission.

8. The PPDU includes a legacy preamble, a control field, and a data field; The STF signal is included in the control field, The method of claim 1 , wherein the control field and the data field support an 802.11be wireless LAN system.

9. In a wireless LAN system, a receiving STA (station) memory, a transceiver, and a processor operatively coupled to the memory and the transceiver, the processor comprising: receiving a Physical Protocol Data Unit (PPDU) from a transmitting STA via broadband; Decode the PPDU, The PPDU includes a Short Training Field (STF) signal, the STF signal is generated based on a first STF sequence for the wideband; When the wideband is a 320 MHz band, the first STF sequence is defined as a sequence including an M sequence as follows: {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2), sqrt() represents the square root, The M-sequence is defined as follows: M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1} In the first STF sequence, elements with tone indexes of -8, +8, -1016, +1016, -1032, +1032, -2040, and +2040 are set to 0 by the receiving STA.

10. In a wireless LAN system, A transmitting station (STA) generates a physical protocol data unit (PPDU); and The transmitting STA transmits the PPDU to a receiving STA via a broadband; The PPDU includes a Short Training Field (STF) signal, the STF signal is generated based on a first STF sequence for the wideband; When the wideband is a 320 MHz band, the first STF sequence is defined as a sequence including an M sequence as follows: {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2), sqrt() represents the square root, The M-sequence is defined as follows: M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1} In the first STF sequence, elements having tone indices of −8, +8, −1016, +1016, −1032, +1032, −2040, and +2040 are set to 0.

11. the PPDU is a trigger-based (TB) PPDU, The PPDU is received via a Resource Unit (RU) or a Multi-RU (MRU), the RU or the MRU comprises a combination of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU, 26+52-tone RU, 242+484-tone RU, 2x996-tone RU, 484+996-tone RU, 3x996-tone RU, or 4x996-tone RU; The 26+52 tone RU is an MRU in which a 26 tone RU and a 52 tone RU are aggregated, The 242+484 tone RU is an MRU in which a 242 tone RU and a 484 tone RU are aggregated, The 484+996 tone RU is an MRU in which a 484 tone RU and a 996 tone RU are aggregated, The 2x996-tone RU is an MRU in which two 996-tone RUs are aggregated, The 3x996-tone RU is an MRU in which three 996-tone RUs are aggregated, The method of claim 10 , wherein the 4× 996-tone RU is an MRU in which four 996-tone RUs are aggregated.

12. The method of claim 10 , wherein the first STF sequence is mapped to a tone included in the RU or the MRU.

13. the first STF sequence is a sequence in which a phase rotation is applied to a sequence in which the second STF sequence is repeated, The second STF sequence is an STF sequence for the 80 MHz band defined in an 802.11ax wireless LAN system, the wide band includes first through fourth 80 MHz bands; the first to fourth 80 MHz bands are arranged in order from lowest frequency to highest frequency, 11. The method of claim 10, wherein the phase rotation is applied to the second, third, or fourth 80 MHz band in the wide band.

14. The second STF sequence is defined as follows: The method of claim 13, wherein {M −1 M −1 −M −1 M 0 −M 1 M 1 −M 1 −M}*(1+j) / sqrt(2).

15. 11. The method of claim 10, wherein the first STF sequence is spaced by 8 tones from the lowest tone having a tone index of -2040 to the highest tone having a tone index of +2040.

16. The method of claim 10, wherein the STF signal is used for automatic gain control (AGC) estimation in multiple input multiple output (MIMO) transmission.

17. The PPDU includes a legacy preamble, a control field, and a data field; The STF signal is included in the control field, The method of claim 10 , wherein the control field and the data field support an 802.11be wireless LAN system.

18. In a wireless LAN system, a transmitting STA (station) memory, a transceiver, and a processor operatively coupled to the memory and the transceiver, the processor comprising: Generate a PPDU (Physical Protocol Data Unit), The PPDU is transmitted to a receiving STA via a broadband The PPDU includes a Short Training Field (STF) signal, the STF signal is generated based on a first STF sequence for the wideband; When the wideband is a 320 MHz band, the first STF sequence is defined as a sequence including an M sequence as follows: {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2), sqrt() represents the square root, The M-sequence is defined as follows: M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1} In the first STF sequence, elements with tone indexes of -8, +8, -1016, +1016, -1032, +1032, -2040, and +2040 are set to 0 by the transmitting STA.

19. At least one computer-readable medium containing instructions pursuant to which are executed by at least one processor, receiving a Physical Protocol Data Unit (PPDU) over broadband from a transmitting STA; and decoding the PPDU, The PPDU includes a Short Training Field (STF) signal, the STF signal is generated based on a first STF sequence for the wideband; When the wideband is a 320 MHz band, the first STF sequence is a sequence including an M sequence and is defined as follows: {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2), sqrt() represents the square root, The M-sequence is defined as follows: M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1} In the first STF sequence, elements having tone indices of −8, +8, −1016, +1016, −1032, +1032, −2040, and +2040 are set to 0.

20. In a device in a wireless LAN system, memory, and a processor operatively coupled to the memory, the processor comprising: receiving a Physical Protocol Data Unit (PPDU) from a transmitting STA via broadband; Decode the PPDU, The PPDU includes a Short Training Field (STF) signal, the STF signal is generated based on a first STF sequence for the wideband; When the wideband is a 320 MHz band, the first STF sequence is defined as a sequence including an M sequence as follows: {M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 M -1 M -1 -M -1 M 0 -M 1 M 1 -M 1 -M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M 0 -M 1 -M 1 M 1 -M 0 M -1 -M -1 M -1 M}*(1+j) / sqrt(2), sqrt() represents the square root, The M-sequence is defined as follows: M={-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1} In the first STF sequence, elements having tone indices of −8, +8, −1016, +1016, −1032, +1032, −2040, and +2040 are set to 0.

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