Set partitioning for digital post distortion receivers

Abstract

Various aspects of the disclosure generally relate to wireless communication. In some aspects, a wireless communication device can receive a wireless communication signal. The wireless communication device can process the wireless communication signal using a digital post-distortion receiver based at least in part on performing a multi-level coding (MLC) set partitioning operation, where performing the MLC set partitioning operation includes partitioning a quadrature amplitude modulation constellation set by limiting a maximum Euclidean distance of errors associated with decoding one or more least significant bits. Numerous other aspects are provided.

Description

[0001] Cross-references to related applications

[0002] This patent application claims priority to U.S. Patent Application No. 17 / 109,975, filed December 2, 2020, entitled “SET PARTITIONING FOR ADIGITAL POST DISTORTION RECEIVER,” which has been assigned to the assignee of this application. The disclosure of the earlier application is considered part of this patent application and is incorporated herein by reference. Technical Field

[0003] Various aspects of this disclosure generally relate to wireless communication, and to techniques and apparatus for the partitioning of sets of digital post-distortion receivers. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone communication, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is a collection of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard released by the 3rd Generation Partnership Project (3GPP).

[0005] A wireless network may include multiple base stations (BSs) capable of supporting communication for multiple user equipments (UEs). UEs can communicate with base stations (BSs) via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, and an uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, Access Point (AP), Radio Headend, Transmit / Receive Point (TRP), New Radio (NR) BS, 5G Node B, etc.

[0006] The aforementioned multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different user equipment to communicate at the municipal, national, regional, and even global levels. New Radio (NR), also known as 5G, is a collection of enhancements to the LTE mobile standard released by the 3rd Generation Partnership Project (3GPP). NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving service, utilizing new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies, and carrier aggregation to better support mobile broadband internet access. As the demand for mobile broadband access continues to increase, further improvements to LTE, NR, and other radio access technologies are useful. Summary of the Invention

[0007] In some aspects, a wireless communication device for wireless communication includes a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to receive wireless communication signals; and processing the wireless communication signals using a digital post-distortion receiver, at least in part based on performing a multi-level coding (MLC) set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning a quadrature amplitude modulation (QAM) constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

[0008] In some aspects, an apparatus for wireless communication includes components for receiving wireless communication signals; and components for processing the wireless communication signals using a digital post-distortion receiver, at least in part based on performing an MLC set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning a QAM constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

[0009] In some aspects, a method of wireless communication performed by a wireless communication device includes receiving a wireless communication signal; and processing the wireless communication signal using a digital post-distortion receiver, at least in part based on performing an MLC set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning a QAM constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

[0010] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a wireless communication device, cause the wireless communication device to receive a wireless communication signal; and processes the wireless communication signal using a digital post-distortion receiver, at least in part based on performing an MLC set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning a QAM constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

[0011] The aspects generally include, as described generally with reference to the accompanying drawings and description, and as shown in the accompanying drawings and description, methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment and / or processing systems.

[0012] The foregoing has provided a fairly broad overview of the features and technical advantages of the examples according to this disclosure in order to better understand the following detailed description. Additional features and advantages will be described below. The disclosed concepts and specific examples can readily serve as the basis for modifications or designs of other structures used to achieve the same purpose of this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein, their organization and operation, and related advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each drawing is provided for illustrative and descriptive purposes and not as a definition of limitation of the claims. Attached Figure Description

[0013] To gain a detailed understanding of the foregoing features of this disclosure, a more specific description of the above-briefly summarized contents can be obtained by referring to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and should not be considered as limiting its scope, as the description may allow for other equivalent aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0014] Figure 1 This is a diagram illustrating an example of a wireless network according to various aspects of this disclosure.

[0015] Figure 2 This is a diagram illustrating an example of a base station communicating with a UE in a wireless network according to various aspects of this disclosure.

[0016] Figure 3 This is a diagram illustrating an example of a digital post-distortion (DPoD) receiver according to various aspects of this disclosure.

[0017] Figure 4 This is a diagram illustrating an example of a multi-level decoding (MLC) set partitioned according to various aspects of this disclosure.

[0018] Figure 5 and Figure 6 This is a diagram illustrating an example of a set of partitions associated with DPoD receivers according to various aspects of this disclosure.

[0019] Figure 7 This is a diagram illustrating an example process associated with the partitioning of a set of DPoD receivers according to various aspects of this disclosure.

[0020] Figure 8 This is a block diagram illustrating an example apparatus for wireless communication according to various aspects of this disclosure. Detailed Implementation

[0021] Various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will understand that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Furthermore, the scope of this disclosure is intended to cover such apparatus or methods practiced using structures, functions, or structures and functions other than or different from the aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be embodied by one or more elements of the claims.

[0022] Several aspects of a telecommunications system will now be presented with reference to various devices and technologies. These devices and technologies will be described in detail below and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system.

[0023] It should be noted that while the terms commonly associated with 5G or NR radio access technology (RAT) may be used to describe the aspects herein, the aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or RATs after 5G (e.g., 6G).

[0024] Figure 1This is a diagram illustrating an example of a wireless network 100 according to various aspects of this disclosure. Wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network, as well as other examples. Wireless network 100 may include multiple base stations 110 (shown as BS110a, BS110b, BS110c, and BS110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NRBS, Node B, gNB, 5G Node B (NB), access point, Transmit / Receive Point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0025] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. A macrocell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access for UEs with service subscriptions. A picocell can cover a relatively small geographic area and can allow unrestricted access for UEs with service subscriptions. A femtocell can cover a relatively small geographic area (e.g., a home) and can allow restricted access for UEs associated with the femtocell (e.g., UEs in a Closed Subscriber Group (CSG)). A BS used for macrocells can be referred to as a macro BS. A BS used for picocells can be referred to as a pico BS. A BS used for femtocells can be referred to as a femto BS or a home BS. Figure 1 In the example shown, BS110a can be a macro BS for macro cell 102a, BS110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A base station can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5GNB,” and “cell” are used interchangeably herein.

[0026] In some respects, the cell may not necessarily be stationary, and the geographical area of ​​the cell may move depending on the location of the moving BS. In some respects, BSs may interconnect with each other and / or connect to one or more other BSs or network nodes (not shown) using any suitable transport network through various types of backhaul interfaces (such as direct physical connections or virtual networks).

[0027] The wireless network 100 may also include relay stations. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown, relay BS110d can communicate with macro BS110a and UE 120d to facilitate communication between BS110a and UE 120d. A relay BS can also be referred to as a relay station, relay base station, relay, etc.

[0028] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs can have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs can have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs can have lower transmit power levels (e.g., 0.1 to 2 watts).

[0029] Network controller 130 can be coupled to a collection of BSs and can provide coordination and control for these BSs. Network controller 130 can communicate with the BSs via backhaul. BSs can also communicate with each other directly or indirectly via wireless or wired backhaul.

[0030] UEs 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. UEs may also be referred to as access terminals, terminals, mobile stations, subscriber units, stations, etc. UEs may be cellular phones (e.g., smartphones), personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, laptop computers, cordless phones, wireless local loop (WLL) stations, tablet computers, cameras, gaming devices, netbooks, smartbooks, ultrabooks, medical devices or equipment, biosensors / devices, wearable devices (smartwatches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart rings, smart bracelets)), entertainment devices (e.g., music or video devices or satellite radios), vehicle components or sensors, smart meters / sensors, industrial manufacturing equipment, GPS devices, or any other suitable device configured to communicate via wireless or wired media.

[0031] Some UEs can be considered Machine-Type Communication (MTC) or Evolved or Enhanced Machine-Type Communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, instruments, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node can provide connectivity to or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs can be considered Internet of Things (IoT) devices, and / or can be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs can be considered Customer Premises Equipment (CPE). UE 120 can be included within a housing housing the components of UE 120, such as processor components and memory components. In some aspects, the processor components and memory components can be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) can be operatively coupled, communicatively coupled, electrically coupled, and / or electrically coupled.

[0032] Typically, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, air interface, etc. A frequency can also be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0033] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary for communication with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols), and / or mesh networks. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations performed by base station 110 as described elsewhere herein.

[0034] Devices in the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating band with a first frequency range (FR1), which can span from 410 MHz to 7.125 GHz, and / or can communicate using an operating band with a second frequency range (FR2), which can span from 24.25 GHz to 52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred to as intermediate frequency (IF) frequencies. Although a portion of FR1 is above 6 GHz, FR1 is often referred to as the "sub-6 GHz" band. Similarly, FR2 is often referred to as the "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) designated as "millimeter wave" by the International Telecommunication Union (ITU). Therefore, unless otherwise explicitly stated, the terms "sub-6 GHz" and so on (if used herein) should be understood to broadly refer to frequencies below 6 GHz, frequencies within FR1, and / or intermediate frequency band frequencies (e.g., above 7.125 GHz). Similarly, unless otherwise explicitly stated, the terms "millimeter wave" and so on (if used herein) should be understood to broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequency band frequencies (e.g., below 24.25 GHz). It is anticipated that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0035] As indicated above, it provides Figure 1 As an example. Other examples can be related to... Figure 1 The descriptions are different.

[0036] Figure 2 This is a diagram illustrating an example 200 of a base station 110 communicating with a UE 120 in a wireless network 100 according to various aspects of this disclosure. The base station 110 may be equipped with T antennas 234a to 234t (collectively referred to as 234), and the UE 120 may be equipped with R antennas 252a to 252r (collectively referred to as 252), wherein typically T ≥ 1 and R ≥ 1.

[0037] At base station 110, transmitting processor 220 can receive data for one or more UEs from data source 212, select one or more modulation and decoding schemes (MCS) for each UE based at least in part on channel quality indicators (CQI) received from the UE, process (e.g., decoding and modulation) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. Transmitting processor 220 can also process system information (e.g., for semi-static resource allocation information (SRPI), etc.) and control information (e.g., CQI requests, grants, and / or upper-layer signaling) and provide overhead symbols and control symbols. Transmitting processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., pre-decoding, if applicable) on data symbols, control symbols, overhead symbols, and / or reference symbols, and can provide T output symbol streams to T modulators (MODs) 232a to 232t (collectively referred to as 232). Each modulator 232 can (e.g., for OFDM, etc.) process its respective output symbol stream to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted separately via T antennas 234a to 234t.

[0038] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations, and can provide the received signals to demodulators (DEMODs) 254a to 254r (collectively referred to as 254), respectively. Each demodulator 254 can adjust (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM, etc.) to obtain a received symbol. MIMO detector 256 can obtain the received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide the detected symbols. Receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide data for decoding of UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine Reference Signal Received Power (RSRP) parameters, Received Signal Strength Indication (RSSI) parameters, Reference Signal Received Quality (RSRQ) parameters, and / or Channel Quality Indicator (CQI) parameters, among others. In some aspects, one or more components of the UE 120 may be included in the housing.

[0039] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in a core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0040] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included in one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, among other examples. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements coupled to one or more transmitting and / or receiving components (such as...) Figure 2 One or more antenna elements (one or more components).

[0041] On the uplink, at UE 120, the transmitting processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., reports including RSRP, RSSI, RSRQ, and / or CQI). The transmitting processor 264 can also generate reference symbols for one or more reference signals. Symbols from the transmitting processor 264 can be pre-decoded (if applicable) by the TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM, CP-OFDM), and transmitted to base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of UE 120 can be included in the modem of UE 120. In some aspects, UE 120 includes a transceiver. The transceiver may include any combination of antenna 252, modulator and / or demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264 and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform any of the methods described herein (e.g., as referenced). Figures 5-7 (As described) all aspects.

[0042] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receiver processor 238 to obtain decoded data and control information from UE 120. Receiver processor 238 can provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communication. In some aspects, modulators and demodulators (e.g., MOD / DEMOD 232) of base station 110 may be included in the modem of base station 110. In some aspects, base station 110 includes transceivers. The transceiver may include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform any of the methods described herein (e.g., as referenced). Figures 5-7 (As described) all aspects.

[0043] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120 and / or Figure 2 Any other component may perform one or more techniques associated with the set partitioning for digital post-distortion (DPoD) receivers, as described in more detail elsewhere herein. In some aspects, the wireless communication device described herein is Figure 2 The base station 110 shown is included in or comprises one or more components of the base station 110. In some aspects, the wireless communication device described herein is Figure 2 The UE 120 shown is included in UE 120, or includes one or more components of UE 120. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component can execute or direct, for example Figure 7 The operation of process 700 and / or other processes as described herein. Memory 242 and 282 may store data and program code of base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly or after compilation, transformation, and / or interpretation), may cause one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 7 The operation of process 700 and / or other processes as described herein. In some aspects, execution instructions may include run instructions, transformation instructions, compilation instructions and / or interpretation instructions, among others.

[0044] In some aspects, such components may include couplings. Figure 2 One or more components in the described UE 120, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256 and / or receive processor 258.

[0045] In some aspects, a wireless communication device includes components for receiving wireless communication signals and / or components for processing the wireless communication signals using a digitally post-distortion receiver, at least in part, based on performing a multi-level decoding (MLC) set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning a quadrature amplitude modulation (QAM) constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits. In some aspects, components for the wireless communication device to perform the operations described herein may include one or more of, for example, a transmit processor 220, a TX MIMO processor 230, a modulator 232, an antenna 234, a demodulator 232, a MIMO detector 236, a receive processor 258, a controller / processor 240, a memory 242, or a scheduler 246. In some aspects, components for the wireless communication device to perform the operations described herein may include one or more of, for example, an antenna 252, a demodulator 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, a TX MIMO processor 266, a modulator 254, a controller / processor 280, or a memory.

[0046] In some aspects, a wireless communication device includes a component for decoding one or more least significant bits corresponding to a first QAM constellation subset, at least in part based on applying a channel decoder only to the least significant bits.

[0047] In some aspects, a wireless communication device includes components for filtering nonlinear errors associated with a power amplifier from a wireless communication signal and based at least in part on a plurality of digital post-distortion iterations to generate a filtered signal; components for determining that the signal-to-noise ratio (SNR) associated with the filtered signal satisfies an SNR condition; and / or components for using hard decision to estimate transmitted symbols based at least in part on the determination that the SNR satisfies the SNR condition.

[0048] In some aspects, wireless communication devices include components for transmitting reports indicating the capability of the wireless communication device to include a digitally post-distortion receiver.

[0049] In some aspects, the wireless communication device includes a component for receiving a digital post-distortion parameter indication of a set partitioning type corresponding to an MLC set partitioning operation.

[0050] In some aspects, wireless communication devices include components for receiving reports indicating the capability of the wireless communication device to include a digitally post-distorted receiver.

[0051] In some aspects, wireless communication devices include components for transmitting a digital post-distortion parameter indication of a set partitioning type corresponding to an MLC set partitioning operation.

[0052] Although Figure 2 The blocks are illustrated as different components, but the functions described above with respect to these blocks can be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 can be performed by or under the control of the controller / processor 280.

[0053] As indicated above, it provides Figure 2 As an example. Other examples can be related to... Figure 2 The descriptions are different.

[0054] Figure 3 This is a diagram illustrating example 300 of a digital post-distortion (DPoD) receiver according to various aspects of this disclosure. Figure 3 As shown, the DPoD receiver may include a receiver chain 305 and a DPoD component 310 coupled thereto.

[0055] As shown, receiver chain 305 may include an inverse fast Fourier transform (iFFT) component configured to receive a received signal (shown as "y_n") and transform the time-domain component of the received signal into a frequency-domain signal (shown as "Y_k"). The frequency-domain signal is provided to a demapper to extract symbols, and the symbols are provided to a decoder, which extracts bits (shown as "b_k") based on the symbols.

[0056] In some communication systems, as power increases, transmitters can transmit signals with increased nonlinearity. For example, a high-power amplifier (HPA) with a limited dynamic range (DR) may distort the transmitted signal due to its relatively high peak-to-average power ratio (PAPR). Nonlinear distortion can be in-band distortion, which affects link performance related to the magnitude of the error vector (EVM), or out-of-band distortion, which causes adjacent channel interference (e.g., the transmitted signal interfering with other signals in adjacent frequency bands). To avoid nonlinearity and the accompanying interference, transmitter devices can apply a power back-off value to reduce the transmitted power, thereby reducing nonlinearity.

[0057] However, applying power backoff values ​​can lead to reduced power efficiency (e.g., less available transmit power for transmission in the channel, resulting in reduced range, signal-to-interference-plus-noise ratio, etc.). Transmitters can apply digital predistortion (DPD) processing to reduce nonlinear distortion to below a threshold level while simultaneously reducing the power backoff level, thereby improving power efficiency compared to using power backoff alone to avoid nonlinear distortion. However, although DPD processing can correct for nonlinear effects within the dynamic range, nonlinearity can still cause clipping effects (e.g., caused by a limited dynamic range). This can limit the effectiveness of DPD processing and its associated power efficiency advantages. Furthermore, the use of DPD processing may be limited to relatively high transmit power values ​​present at the cell edge and may not be used far from the cell edge.

[0058] Considering the limitations of DPD processing, the receiver can apply DPoD processing. DPoD processing can be performed by a DPoD component 310, which may include hardware and / or software configured to implement an algorithm to remove nonlinear noise generated by a known model (e.g., power amplifier clipping). For example, in DPoD processing, the receiver can account for clipping caused by nonlinearity. Therefore, DPoD processing can be effective both far from the cell edge and at the cell edge.

[0059] As shown, the DPoD receiver uses an iterative process, where each iteration includes a hard-decision slicing to determine the estimated constellation points (shown as "X_k"). The DPoD component 310 includes a nonlinear model of the power amplifier used to estimate the nonlinear noise (shown as "D_k"). The estimated nonlinear noise is subtracted from the frequency domain signal. The initial DPoD iterations are heavily influenced by noise due to nonlinearities not considered in the hard-decision slicing. In some cases, ensemble partitioning algorithms can be used to partition the constellation points.

[0060] As indicated above, it provides Figure 3 As an example. Other examples can be related to... Figure 3 The descriptions are different.

[0061] Figure 4 This is a diagram illustrating example 400 of a multi-level decoding (MLC) set partitioned according to various aspects of this disclosure. Figure 4 As shown, set partitioning can be used to generate constellation subsets based on constellation sets.

[0062] As indicated by reference numeral 405 in the accompanying drawings, a constellation diagram may include constellation points plotted in Euclidean space. In the illustrated example 400, the constellation diagram depicts a set of constellations associated with a 16-point quadrature amplitude modulation (QAM) telecommunications scheme having additive white Gaussian noise (AWGN).

[0063] As shown by reference numeral 410, the constellation set is divided into subsets, where each level of subset has a minimum Euclidean distance d2 between its points, which is greater than the minimum Euclidean distance d1 between the points of the highest level (constellation set). The Euclidean distance is the straight-line distance between adjacent constellation points on the constellation map. This Euclidean distance is a measure of the hard-decision decoder's ability to distinguish points within a subset in the presence of noise. For example, the Euclidean distance could be the distance of the error associated with decoding one or more least significant bits. As shown by reference numeral 415, the subset is further divided into subsets with a minimum Euclidean distance d3, which is greater than the minimum Euclidean distance d2 of the next highest level. As shown by reference numeral 420, further subsets are similarly divided into subsets with a minimum Euclidean distance d4, which is greater than the minimum Euclidean distance d3 of the next highest level. For example, d4 > d3 > d2 > d1.

[0064] Decoding of the information carried at each level is protected by different code rates to maximize overall spectral efficiency. Since AWGN is omnidirectional, the optimal partitioning of hierarchical constellation subsets is independent of noise variance. However, the MLC set partitioning described above is ineffective for partitioning constellation sets in the initial iterations of the DPoD process. Because partitioning the constellation set into constellation subsets with increasing minimum Euclidean distances between constellation points can be too nonlinear, the DPoD process may get stuck in the initial iterations.

[0065] According to various aspects of the techniques and apparatus described herein, including a set partitioning operation that limits the minimum Euclidean distance between constellation points, is used to facilitate iterative constellation partitioning for a DPoD receiver. In some aspects, a wireless communication device can receive wireless communication signals and process the wireless communication signals using a DPoD receiver. The wireless communication device can process the signals at least in part based on performing an MLC set partitioning operation that includes partitioning a QAM constellation set by limiting the maximum Euclidean distance associated with the error of decoding one or more least significant bits.

[0066] Set partitioning can be used to determine one or more slices as part of the hard slice decision in a DPoD operation. Set partitioning can be implemented for one or more initial iterations of the DPoD operation. Since the slice error is close to the constellation point in terms of Euclidean distance, the iterative nature of DPoD can produce successful results. In this way, various parties can improve the DPoD operation by enhancing its ability to handle strong nonlinearities, thereby promoting improvements in the performance of wireless communication devices.

[0067] As indicated above, it provides Figure 4 As an example. Other examples can be related to... Figure 4 The descriptions are different.

[0068] Figure 5 This is a diagram illustrating an example 500 associated with a set of DPoD receivers according to various aspects of this disclosure. Figure 5 As shown, the first wireless communication device 505 and the second wireless communication device 510 can communicate with each other. The first wireless communication device 505 and / or the second wireless communication device 510 can be a base station (e.g., Figure 1 The base station 110 shown), UE (e.g., Figure 1 The UE 120 shown, the Integrated Access and Backhaul (IAB) node, and / or any other wireless communication device.

[0069] As indicated by reference numeral 515 in the accompanying drawings, a first wireless communication device 505 may transmit a capability report, and a second wireless communication device 510 may receive a capability report. The capability report may include signals, packets, and / or one or more bits indicating that the first wireless communication device 505 includes a DPoD receiver capable of performing the DPoD operations described herein. In this manner, the second wireless communication device 510 may configure wireless communication transmissions at least in part based on capabilities.

[0070] As shown by reference numeral 520 in the accompanying drawings, the second wireless communication device 510 can transmit a DPoD parameter indication, and the first wireless communication device 505 can receive the DPoD parameter indication. The DPoD parameter indication can indicate the set partitioning type corresponding to the MLC set partitioning operation. The DPoD parameter indication can indicate the selected code rate. In some aspects, for example, the DPoD parameter indication can be carried in downlink control information (DCI).

[0071] As shown by reference numeral 525, the second wireless communication device 510 can transmit wireless communication signals, and the first wireless communication device 505 can receive wireless communication signals. As shown by reference numeral 530, the first wireless communication device 505 can process wireless communication signals. In some aspects, for example, the first wireless communication device 505 can use a DPoD receiver to process wireless communication signals. The first wireless communication device 505 can process wireless communication signals at least in part based on performing an MLC set partitioning operation. In some aspects, the first wireless communication device 505 can perform an MLC set partitioning operation at least in part based on partitioning a QAM constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

[0072] In some aspects, the first wireless communication device 505 may perform an MLC set partitioning operation based at least in part on partitioning a QAM constellation set into a first QAM constellation subset and a second QAM constellation subset. The first QAM constellation subset may include a first half of the QAM constellation set, and the second QAM constellation subset may include a second half of the QAM constellation set. In some aspects, each partition may include a separate channel code protecting its contents. For example, the first channel code may correspond to the first QAM constellation subset and the second channel code may correspond to the second QAM constellation subset.

[0073] In some respects, because the DPoD receiver is insensitive to small Euclidean distance errors in hard decisions during one or more initial iterations, the channel decoder can be applied only to the least significant bits during DPoD operation to obtain more bounded slice decisions. For example, the first wireless communication device 505 can decode one or more least significant bits corresponding to a subset of the first constellation, at least in part, based on applying the channel decoder only to the least significant bits.

[0074] After one or more initial DPoD iterations, the signal-to-noise ratio (SNR) can be improved, allowing the first wireless communication device 505 to perform further iterations using simple hard decision. In some aspects, processing the wireless communication signal may include performing multiple digital post-distortion iterations. In some aspects, for example, the first wireless communication device 505 may filter nonlinear errors associated with the power amplifier from the wireless communication signal and at least in part based on multiple digital post-distortion iterations to generate a filtered signal. The first wireless communication device 505 may determine that the SNR associated with the filtered signal satisfies an SNR condition and may use hard decision to estimate the transmitted symbol at least in part based on the determination that the SNR satisfies the SNR condition. The SNR condition may include a threshold, a specified range, and / or another value or value condition.

[0075] Based on the aspects of the techniques and apparatus described above, including the set partitioning operation that limits the minimum Euclidean distance between constellation points, can be used to facilitate iterative constellation partitioning for DPoD receivers. Wireless communication devices can process signals at least in part based on performing an MLC set partitioning operation, which involves partitioning the QAM constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits. Since the slicing error is close to the constellation points in terms of Euclidean distance, the iterative nature of DPoD can produce successful results. In this way, aspects can improve DPoD operation by improving its ability to handle strong nonlinearities, thereby promoting improvements in the performance of wireless communication devices.

[0076] As indicated above, it provides Figure 5 As an example. Other examples can be related to... Figure 5 The descriptions are different.

[0077] Figure 6 This is a diagram illustrating an example 600 associated with a set of DPoD receivers according to various aspects of this disclosure. DPoD receivers may include DPoD receivers, such as those combined with… Figure 5 The first wireless communication device 505 described herein is a DPoD receiver.

[0078] As shown by reference numeral 605, a constellation diagram may include constellation points drawn in Euclidean space. In the illustrated example 605, the constellation diagram depicts a set of constellations associated with a 16-point QAM telecommunications scheme. As shown by reference numeral 610, the constellation set is progressively divided into subsets to group neighboring constellation points (which may be referred to as “constellation symbols”).

[0079] In some aspects, as mentioned above Figure 5 As described, Figure 6The set partitioning operation shown can be performed, at least in part, based on partitioning the QAM constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits. For example, a wireless communication device using a DPoD receiver can perform the MLC set partitioning operation, at least in part, based on partitioning the QAM constellation set into a first QAM constellation subset 615 and a second QAM constellation subset 620. The first QAM constellation subset 615 may include a first half of the QAM constellation points in the QAM constellation set, and the second QAM constellation subset may include a second half of the QAM constellation points in the QAM constellation set.

[0080] For example, such as Figure 6 As shown, the first QAM constellation subset 615 may include the left half of the QAM constellation set, and the second QAM constellation subset 620 may include the right half of the QAM constellation set. In some aspects, the first QAM constellation subset 615 may include the upper half of the QAM constellation set, and the second QAM constellation subset 620 may include the lower half of the QAM constellation set. Figure 6 As further shown, the first QAM constellation subset 615 can be similarly divided into a third QAM constellation subset 625 and a fourth QAM constellation subset 630. For example, as illustrated, the third QAM constellation subset 625 may include the lower half of the first QAM constellation subset 615. This lower half may also correspond to the first quadrant of the QAM constellation set. The fourth QAM constellation subset 630 may include the upper half of the first QAM constellation subset 615. This upper half may also correspond to the second quadrant of the QAM constellation set. Although not shown, the second QAM constellation subset 620 can be similarly divided. In some aspects, the third and fourth QAM constellation subsets can be similarly divided, and so on.

[0081] As indicated above, it provides Figure 6 As an example. Other examples can be related to... Figure 6 The descriptions are different.

[0082] Figure 7 This is a diagram illustrating an example process 700 performed, for example, by a wireless communication device according to various aspects of this disclosure. Example process 700 is an example in which a wireless communication device (e.g., wireless communication device 505 and / or wireless communication device 510) performs operations associated with a set partitioning for a DPoD receiver.

[0083] like Figure 7 As shown, in some aspects, process 700 may include receiving wireless communication signals (block 710). For example, a wireless communication device (e.g., using...) Figure 8 The receiving component 802 depicted can receive wireless communication signals, as described above.

[0084] like Figure 7 Further shown, in some aspects, process 700 may include at least in part based on performing an MLC set partitioning operation, using a digital post-distortion receiver to process the wireless communication signal, wherein performing the MLC set partitioning operation includes partitioning the QAM constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits (box 720). For example, a wireless communication device (e.g., using...) Figure 8 The processing component 808 described herein may be at least partially based on performing an MLC set partitioning operation, using a digital post-distortion receiver to process wireless communication signals, wherein performing the MLC set partitioning operation includes partitioning a QAM constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits, as described above.

[0085] Process 700 may include additional aspects, such as any single aspect or any combination of aspects of one or more other processes described below and / or elsewhere herein.

[0086] In the first aspect, performing the set partitioning operation includes partitioning the QAM constellation set into a first QAM constellation subset and a second QAM constellation subset, wherein the first QAM constellation subset includes the first half of the QAM constellation set and the second QAM constellation subset includes the second half of the QAM constellation set.

[0087] In the second aspect, either alone or in combination with the first aspect, the first channel code corresponds to a first QAM constellation subset and the second channel code corresponds to a second QAM constellation subset.

[0088] In the third aspect, either alone or in combination with one or more of the first and second aspects, process 700 includes at least in part decoding one or more least significant bits corresponding to a subset of the first constellation based solely on applying the channel decoder to the least significant bits.

[0089] In the fourth aspect, processing wireless communication signals, either alone or in combination with one or more of the first to third aspects, includes performing multiple digital post-distortion iterations.

[0090] In the fifth aspect, either alone or in combination with the fourth aspect, process 700 includes filtering nonlinear errors associated with the power amplifier from the wireless communication signal and at least in part based on multiple digital post-distortion iterations to generate a filtered signal, determining that the SNR associated with the filtered signal satisfies the SNR condition, and using hard decision to estimate the transmitted symbols at least in part based on the determination that the SNR satisfies the SNR condition.

[0091] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, process 700 includes transmitting a report indicating the capability of the wireless communication device to include a digitally post-distorted receiver.

[0092] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, process 700 includes receiving a digital post-distortion parameter indication that indicates a set partitioning type corresponding to an MLC set partitioning operation.

[0093] In the eighth aspect, either alone or in combination with the seventh aspect, the digital post-distortion parameter indicates the selected bit rate.

[0094] In the ninth aspect, either alone or in combination with one or more of the seventh to eighth aspects, the digital post-distortion parameter indication is carried in the downlink control information.

[0095] In the tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the wireless communication device includes a user equipment.

[0096] In the eleventh aspect, alone or in combination with one or more of the first to fifth aspects, process 700 includes receiving a report indicating the capability of the wireless communication device to include a digitally post-distorted receiver.

[0097] In the twelfth aspect, either alone or in combination with one or more of the first to fifth or eleventh aspects, process 700 includes sending a digital post-distortion parameter indication that indicates the set partitioning type corresponding to the MLC set partitioning operation.

[0098] In the thirteenth aspect, either alone or in combination with the twelfth aspect, the digital post-distortion parameter indicates the selected bit rate.

[0099] In the fourteenth aspect, either alone or in combination with one or more of the first to fifth or eleventh to thirteenth aspects, the wireless communication device includes a base station.

[0100] although Figure 7 An example block of process 700 is shown, but in some aspects, process 700 may include more than Figure 7 The blocks depicted in the process can be more blocks, fewer blocks, different blocks, or blocks arranged differently. Additionally or alternatively, two or more blocks of process 700 can be executed in parallel.

[0101] Figure 8This is a block diagram of an example device 800 for wireless communication. Device 800 may be a wireless communication device (e.g., a UE, a base station, and / or an IAB node, and other examples) or a wireless communication device may include device 800. The wireless communication device may be, include, or be included in. Figure 5 The wireless communication device 505 and / or shown Figure 5 In the wireless communication device 510 shown, in some aspects, device 800 includes a receiving component 802 and a transmitting component 804, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 800 can use the receiving component 802 and the transmitting component 804 to communicate with another device 806 (such as a UE, a base station, or another wireless communication device). As further shown, device 800 may include a processing component 808.

[0102] In some respects, device 800 can be configured to perform the functions described herein. Figure 5 and Figure 6 One or more operations described herein. Additionally or alternatively, apparatus 800 may be configured to perform one or more processes described herein, such as Figure 7 The process is 700. In some aspects, Figure 8 The device 800 and / or one or more components shown may include the elements described above. Figure 2 The described UE and / or base station components, or one or more components. Additionally or alternatively, Figure 8 One or more components shown can be combined with the above. Figure 2 Implementation within one or more components described. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0103] Receiver 802 may receive communications from device 806, such as reference signals, control information, data communications, or combinations thereof. Receiver 802 may provide the received communications to one or more other components of device 800. In some aspects, receiver 802 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 806. In some aspects, receiver 802 may include the foregoing in combination. Figure 2 The described UE and / or base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memories, or combinations thereof.

[0104] Transmitting component 804 can transmit communications such as reference signals, control information, data communications, or combinations thereof to device 806. In some aspects, one or more other components of device 806 can generate communications and provide the generated communications to transmitting component 804 for transmission to device 806. In some aspects, transmitting component 804 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or decoding, and other examples) on the generated communications and can transmit the processed signal to device 806. In some aspects, transmitting component 804 can include the above-described combinations. Figure 2 The described UE and / or base station include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof. In some aspects, the transmit component 804 may be co-located with the receive component 802 in a transceiver.

[0105] The receiving component 802 can receive wireless communication signals. The processing component 808 can process the wireless communication signals using a digitally post-distortion receiver, at least in part, based on performing an MLC set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning the QAM constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits. In some aspects, the processing component 808 may include the combination described above. Figure 2 The described UE and / or base station include a modulator, a transmit MIMO processor, a receive MIMO processor, a transmit processor, a receive processor, a controller / processor, a memory, or a combination thereof. In some aspects, processing component 808 may include transmit component 804 and / or receive component 802.

[0106] Processing component 808 can decode one or more least significant bits corresponding to a subset of the first constellation, at least in part, by applying the channel decoder only to the least significant bits. Processing component 808 can filter nonlinear errors associated with the power amplifier from the wireless communication signal and at least in part based on multiple digital post-distortion iterations to generate a filtered signal. Processing component 808 can determine that the SNR associated with the filtered signal satisfies the SNR condition. Processing component 808 can use hard decision to estimate the transmitted symbols, at least in part based on the determination that the SNR satisfies the SNR condition.

[0107] Transmitting component 804 can transmit a capability report indicating that the wireless communication device includes a digital post-distortion receiver. Receiving component 802 can receive a digital post-distortion parameter indication indicating the set partitioning type corresponding to the MLC set partitioning operation. Receiving component 802 can also receive a capability report indicating that the wireless communication device includes a digital post-distortion receiver. Transmitting component 804 can transmit a digital post-distortion parameter indication indicating the set partitioning type corresponding to the MLC set partitioning operation.

[0108] Figure 8 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 8 The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 8 The two or more components shown can be implemented within a single component, or Figure 8 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 8 The set (one or more) components shown can perform actions described by Figure 8 The other set of components shown performs one or more functions.

[0109] The following provides an overview of various aspects of this disclosure:

[0110] Aspect 1: A method of wireless communication performed by a wireless communication device, comprising: receiving a wireless communication signal; and processing the wireless communication signal using a digital post-distortion receiver, at least in part based on performing a multi-level decoding (MLC) set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning a quadrature amplitude modulation (QAM) constellation set by limiting the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

[0111] Aspect 2: According to the method of Aspect 1, the set partitioning operation includes dividing the QAM constellation set into a first QAM constellation subset and a second QAM constellation subset, wherein the first QAM constellation subset includes the first half of the QAM constellation set and the second QAM constellation subset includes the second half of the QAM constellation set.

[0112] Aspect 3: According to the method of aspect 2, wherein the first channel code corresponds to a first QAM constellation subset and the second channel code corresponds to a second QAM constellation subset.

[0113] Aspect 4: The method according to any one of aspects 1-3 further includes: decoding one or more least significant bits corresponding to the first constellation subset based at least in part on applying the channel decoder only to the least significant bits.

[0114] Aspect 5: According to the method of any one of Aspects 1-4, wherein processing the wireless communication signal includes performing multiple digital post-distortion iterations.

[0115] Aspect 6: The method according to aspect 5 further includes: filtering nonlinear errors associated with the power amplifier from the wireless communication signal and at least in part based on multiple digital post-distortion iterations to generate a filtered signal; determining that the signal-to-noise ratio (SNR) associated with the filtered signal satisfies the SNR condition; and using hard decision to estimate the transmitted symbols based at least in part on the determination that the SNR satisfies the SNR condition.

[0116] Aspect 7: The method according to any one of aspects 1-6 further includes transmitting a report indicating the capability of the wireless communication device to include a digitally post-distorted receiver.

[0117] Aspect 8: According to the method of any one of Aspects 1-7, it further includes receiving a digital post-distortion parameter indication, which indicates the set partitioning type corresponding to the MLC set partitioning operation.

[0118] Aspect 9: According to the method of aspect 8, the digital post-distortion parameter indicates the selected bit rate.

[0119] Aspect 10: According to the method of aspect 8 or aspect 9, wherein the digital post-distortion parameter indication is carried in the downlink control information.

[0120] Aspect 11: According to the method of any one of aspects 1-10, wherein the wireless communication device includes a user equipment.

[0121] Aspect 13: According to any one of aspects 1-6 or the method of aspect 12, it further includes sending a digital post-distortion parameter indication, which indicates the set partitioning type corresponding to the MLC set partitioning operation.

[0122] Aspect 14: According to the method of aspect 13, the digital post-distortion parameter indicates the selected bit rate.

[0123] Aspect 15: The method according to any one of aspects 1-6 or aspects 12-14, wherein the wireless communication device includes a base station.

[0124] Aspect 15: An apparatus for wireless communication at a device, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods of aspects 1-15.

[0125] Aspect 16: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the methods of one or more aspects of aspects 1-15.

[0126] Aspect 17: An apparatus for wireless communication, comprising at least one component for performing the methods of one or more aspects of aspects 1-15.

[0127] Aspect 18: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods of one or more aspects of aspects 1-15.

[0128] Aspect 19: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more of the methods of aspects 1-15.

[0129] The foregoing disclosure provides illustrations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations can be made based on the foregoing disclosure, or from practice in these aspects.

[0130] As used herein, the term "component" is intended to be interpreted broadly as hardware and / or a combination of hardware and software. "Software" should be interpreted broadly as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, programs and / or functions, and other examples, whether referred to as software, firmware, middleware, microcode, hardware description languages, or otherwise. As used herein, processors are implemented in hardware and / or a combination of hardware and software. It is evident that the systems and / or methods described herein can be implemented in various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Therefore, the operation and behavior of systems and / or methods are described herein without reference to specific software code—it should be understood that software and hardware can be designed to implement systems and / or methods, at least in part, based on the descriptions herein.

[0131] As used in this article, depending on the context, satisfying the threshold can mean that the value is greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0132] Although specific combinations of features are recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of aspects. In fact, many of these features can be combined in ways not specifically recited in the claims and / or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of aspects includes combinations of each dependent claim with each other claim in the claim set. As used herein, the phrase “at least one” in the list of items refers to any combination of these items, including single members. As an example, “at least one of a, b, or c” is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination having multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other order of a, b, and c).

[0133] No element, action, or instruction used herein should be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “one” are intended to include one or more items and may be used interchangeably with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items relating to the article “the” and may be used interchangeably with “one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and may be used interchangeably with “one or more.” If the intention is to use only one item, the phrase “only one” or similar language is used. Furthermore, as used herein, the terms “have,” “with,” “possess,” etc., are intended to be open-ended terms. Furthermore, unless explicitly stated otherwise, the phrase “based on” is intended to mean “at least partially based on.” Furthermore, as used herein, unless explicitly stated otherwise (e.g., used in conjunction with “or” or “only one”), the term “or” when used in a series is intended to be inclusive and may be used interchangeably with “and / or.”

Claims

1. A wireless communication device for wireless communication, comprising: Memory; as well as One or more processors are coupled to the memory, and the memory and the one or more processors are configured to: Receive wireless communication signals; as well as The wireless communication signal is processed using a digital post-distortion receiver, at least in part based on performing a multi-level decoding (MLC) set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning the quadrature amplitude modulation (QAM) constellation set by limiting the maximum Euclidean distance, wherein the maximum Euclidean distance refers to the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

2. The wireless communication device according to claim 1, wherein, The memory and the one or more processors are configured to divide the QAM constellation set into a first QAM constellation subset and a second QAM constellation subset when performing the set partitioning operation. Wherein, the first QAM constellation subset includes the first half of the QAM constellation set, and the second QAM constellation subset includes the second half of the QAM constellation set.

3. The wireless communication device according to claim 2, wherein, The first channel code corresponds to the first QAM constellation subset, and the second channel code corresponds to the second QAM constellation subset.

4. The wireless communication device according to claim 2, wherein, The memory and the one or more processors are also configured to decode the one or more least significant bits corresponding to the first QAM constellation subset, at least in part, based on applying a channel decoder only to the least significant bits.

5. The wireless communication device according to claim 1, wherein, The memory and the one or more processors are configured to perform multiple iterations of digital post-distortion operation when processing the wireless communication signal.

6. The wireless communication device according to claim 5, wherein, The memory and the one or more processors are further configured to: The nonlinear error associated with the power amplifier is filtered from the wireless communication signal and at least in part based on multiple iterations of the digital post-distortion operation to generate a filtered signal; Determine that the signal-to-noise ratio (SNR) associated with the filtered signal satisfies the SNR condition; as well as Hard decision is used to estimate the transmitted symbols, at least in part, based on the determination that the SNR satisfies the SNR condition.

7. The wireless communication device according to claim 1, wherein, The memory and the one or more processors are also configured to send a report indicating the capability of the wireless communication device to include the post-distortion receiver.

8. The wireless communication device according to claim 1, wherein, The memory and the one or more processors are also configured to receive a digital post-distortion parameter indication, which indicates the set partitioning type corresponding to the MLC set partitioning operation.

9. The wireless communication device according to claim 8, wherein, The digital post-distortion parameter indicates the selected bitrate.

10. The wireless communication device according to claim 8, wherein, The digital post-distortion parameter indication is carried in the downlink control information.

11. The wireless communication device according to claim 1, wherein, The wireless communication device includes user equipment.

12. The wireless communication device according to claim 1, wherein, The memory and the one or more processors are also configured to receive a report indicating the capability of the wireless communication device to include the digital post-distortion receiver.

13. The wireless communication device according to claim 1, wherein, The memory and the one or more processors are also configured to send a digital post-distortion parameter indication, which indicates the set partitioning type corresponding to the MLC set partitioning operation.

14. The wireless communication device according to claim 13, wherein, The digital post-distortion parameter indicates the selected bitrate.

15. The wireless communication device according to claim 1, wherein, The wireless communication device includes a base station.

16. An apparatus for wireless communication, comprising: Components used to receive wireless communication signals; as well as The components for processing the wireless communication signal using a digital post-distortion receiver including components for performing a multi-level decoding (MLC) set partitioning operation, wherein the components for performing the MLC set partitioning operation include components for partitioning a quadrature amplitude modulation (QAM) constellation set by limiting the maximum Euclidean distance, wherein the maximum Euclidean distance refers to the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

17. The apparatus according to claim 16, wherein, The component for performing the set partitioning operation includes a component for partitioning the QAM constellation set into a first QAM constellation subset and a second QAM constellation subset. Wherein, the first QAM constellation subset includes the first half of the QAM constellation set, and the second QAM constellation subset includes the second half of the QAM constellation set.

18. The apparatus according to claim 17, wherein, The first channel code corresponds to the first QAM constellation subset, and the second channel code corresponds to the second QAM constellation subset.

19. The apparatus of claim 17, further comprising means for decoding the one or more least significant bits corresponding to the first QAM constellation subset, at least in part based on applying a channel decoder only to the least significant bits.

20. The apparatus according to claim 16, wherein, The components for processing the wireless communication signals include components for performing multiple iterations of digital post-distortion operation.

21. The apparatus of claim 20, further comprising: Components for filtering nonlinear errors associated with the power amplifier from the wireless communication signal and based at least in part on the digital post-distortion operation through multiple iterations to generate a filtered signal; A component used to determine whether the signal-to-noise ratio (SNR) associated with the filtered signal satisfies the SNR condition; as well as A component for estimating transmitted symbols using hard decision based at least in part on determining that the SNR satisfies the SNR condition.

22. The apparatus of claim 16, further comprising a component for transmitting a report indicating the apparatus's capability to include the post-distortion receiver.

23. The apparatus of claim 16, further comprising a component for receiving a digital post-distortion parameter indication, the digital post-distortion parameter indication being used to indicate a set partitioning type corresponding to the MLC set partitioning operation.

24. The apparatus according to claim 23, wherein, The digital post-distortion parameter indicates the selected bitrate.

25. The apparatus according to claim 23, wherein, The digital post-distortion parameter indication is carried in the downlink control information.

26. The apparatus of claim 16, further comprising a component for receiving a report indicating the apparatus's capability to include the digital post-distortion receiver.

27. The apparatus of claim 16, further comprising a component for transmitting a digital post-distortion parameter indication, the digital post-distortion parameter indication being used to indicate a set partitioning type corresponding to the MLC set partitioning operation.

28. The apparatus according to claim 27, wherein, The digital post-distortion parameter indicates the selected bitrate.

29. A method for wireless communication performed by a wireless communication device, comprising: Receive wireless communication signals; as well as The wireless communication signal is processed using a digital post-distortion receiver, at least in part based on performing a multi-level decoding (MLC) set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning the quadrature amplitude modulation (QAM) constellation set by limiting the maximum Euclidean distance, wherein the maximum Euclidean distance refers to the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

30. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions, when executed by one or more processors of the wireless communication device, cause the wireless communication device to: Receive wireless communication signals; as well as The wireless communication signal is processed using a digital post-distortion receiver, at least in part based on performing a multi-level decoding (MLC) set partitioning operation, wherein performing the MLC set partitioning operation includes partitioning the quadrature amplitude modulation (QAM) constellation set by limiting the maximum Euclidean distance, wherein the maximum Euclidean distance refers to the maximum Euclidean distance of the error associated with decoding one or more least significant bits.

Images