169results about "Multiple modulation transmitter/receiver arrangements" patented technology

A terminal device (2) according to the present disclosure includes a control unit (203). The control unit (203) acquires, from a base station apparatus (1), information about a signal waveform for use, of a plurality of signal waveforms including a single carrier signal, the signal waveform for use being used for downlink communication with the base station apparatus (1), the information being transmitted by using a predetermined signal waveform of the plurality of signal waveforms. The control unit (203) performs the downlink communication with the base station apparatus (1) by using the signal waveform for use, on the basis of the information.

A gateway includes a modulation scheme conversion device which includes a backscattering tag and a tag signal generation unit configured to provide a tag signal to the backscattering tag. The modulation scheme conversion device multiplies a radio signal based on a Bluetooth low energy (BLE) protocol, which has been modulated with a first modulation scheme, and the tag signal to produce a multiplied signal and to reshape the multiplied signal using a second modulation scheme to produce a reshaped signal and backscatters the reshaped signal. The multiplied signal, which is reshaped with the second modulation scheme and backscattered, is provided to a receiver of second modulation scheme signals and then provided to the Internet. The signal modulated with the second modulation scheme is a WiFi signal based on an IEEE 802.11b protocol.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of one or more waveforms supported by a base station, wherein the one or more waveforms include at least one of an orthogonal frequency division multiplexing (OFDM) waveform, a single carrier frequency domain (SC-FD) waveform, or a single carrier time domain (SC-TD) waveform. The UE may determine whether the UE is capable of communicating with the base station based at least in part on the indication. The UE may selectively communicate with the base station using at least one waveform of the one or more waveforms based at least in part on the determination. Numerous other aspects are provided.

This invention discloses a method and apparatus for single-channel blind source separation of wireless signals based on deep neural networks. Specifically, in the training phase, a signal dataset is created, including a training set and a validation set; a dual-path complex time-domain convolutional network is constructed; a custom network training objective function is created; the obtained signal dataset is used to train and validate the dual-path complex time-domain convolutional network, resulting in a trained dual-path complex time-domain convolutional network; in the application phase, the time-frequency aliased signal to be separated is acquired through a single antenna; the time-frequency aliased signal is segmented and processed to obtain a fixed-length complex-form aliased signal; using the trained dual-path complex time-domain convolutional network, multiple signals are separated from the complex-form aliased signal and sent to a demodulator for demodulation to recover the bit data of the separated signal. This invention can effectively separate simultaneously and in-frequency mixed signals under single-antenna reception conditions, improving the anti-interference capability of wireless communication.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter node may determine a set of parameters for a waveform to be transmitted by the transmitter node, wherein the waveform is to use an allocated bandwidth that is larger than a sweeping bandwidth of a frequency modulated continuous wave (FMCW) chirp. The transmitter node may transmit the waveform according to the set of parameters. Numerous other aspects are described.

Methods and apparatus of reporting PHR for supporting dynamic waveform switching are disclosed. The apparatus includes a receiver that receives Downlink Control Information (DCI) in an active serving cell indicating a first waveform or a second waveform for a Physical Uplink Shared Channel (PUSCH) transmission; a processor that determines a first Power Headroom Report (PHR) corresponding to the first waveform, and a second PHR corresponding to the second waveform; and a transmitter that transmits the first PHR and / or the second PHR for the active serving cell.

A communication method and apparatus are provided, are applied to the field of communication technologies, may be applied to a wireless local area network system supporting 802.11 series protocols such as a next-generation Wi-Fi protocol of IEEE 802.11ax like 802.11be, Wi-Fi 7, or EHT, and 802.11bn, Wi-Fi 8, UHR, Wi-Fi AI, or millimeter wave (MMW), and may be further applied to a WPAN system, a sensing system, and the like supporting UWB. A first communication apparatus generates a PPDU, and sends the PPDU. A second communication apparatus receives the PPDU, and parses the PPDU. The PPDU includes first indication information. The first indication information may indicate a first modulation scheme set and a coding rate. The first modulation scheme set is one of N modulation scheme sets obtained through classification based on W modulation schemes. Q modulation schemes in the first modulation scheme set are used to modulate the PPDU.

In a radio system which allocates resources using as units resource blocks which are formed by frequency components and time components, control information for mobile station devices, and identification information which is used to identify a format for a control information transmission channel which transmits the control information is transmitted from the base station device to the mobile station devices by means of the control information transmission channel.

There is provided an apparatus comprising means for multiplexing a signal comprising data symbols, first reference symbols and second reference symbols, modulating the data symbols using a first modulation scheme, modulating the first reference symbols using a second modulation scheme, modulating the second reference symbols using the first modulation scheme, wherein the first modulation scheme is different from the second modulation scheme and causing the signal comprising the modulated data symbols, modulated first reference symbols and modulated second reference symbols to be transmitted at a first power.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a base station in a wireless communication system is provided. The method includes transmitting, to a terminal, a request to provide first information for capability related to selection of a modulation scheme, receiving the first information from the terminal, selecting the modulation scheme based on the first information, and transmitting second information indicating the selected modulation scheme to the terminal.

Systems and methods are described for generating and implementing return-link satellite communications using a novel 1+N-ary constellation. The 1+N-ary constellation arranges M (e.g., 8) constellation points in a novel formation that increases their distances from each other relative to conventional M-ary modulation schemes by locating an inner constellation point centrally with respect to an I-Q plane and distributing the remaining N (i.e., M=N+1) outer constellation points radially around the inner constellation point. 1+N amplitude and phase-shift keying (APSK) modulation can be used to map symbols to the constellation. Embodiments combine the 1+N APSK modulation with additional features, such as non-Nyquist partial response (NNPR) filtering and / or state of the art low-density parity check (LDPC) coding.

In a system where a network element (e.g. base station, gNB) performs digital post distortion (DPoD) processing of uplink communications, the gNB configures uplink DMRS resources to UEs which are suit

Methods, systems, and devices for wireless communication are described. A wireless device may generate a set of shaping bits based on performing a constellation shaping operation on a set of information bits. Further, the wireless device may perform a first error correction encoding operation based on the set of shaping bits and a second error correction encoding operation based on the set of information bits to generate a first set of coded bits and a second set of coded bits, respectively. Moreover, the wireless device may transmit a control message that indicates an offset that identifies a first resource mapping for the first set of coded bits and a second resource mapping for the second set of coded bits and transmit the first set of coded bits in accordance with the first resource mapping and the second set of coded bits in accordance with the second resource mapping.

Methods, systems, and devices for wireless communications are described. In some examples, a wireless communication device (such as a network entity) may output a downlink control channel message using at least a first resource element (RE) of a first control resource set (CORESET) and using at least a second RE of a second CORESET. The first CORESET and the second CORESET may be linked and may be associated with different transmission configuration indicator (TCI) states. Additionally, each of the first RE and the second RE may be associated with a same payload of the downlink control channel message, and modulation of a first set of symbols mapped to the first RE may be linked to modulation of a second set of symbols mapped to the second RE based on the first CORESET and the second CORESET being linked.

The invention relates to the technical field of oil-gas exploration logging, provides a logging work data real-time transmission system and method based on an embedded structure, and aims to solve the problems that in the prior art, data transmission is insufficient in real-time performance, a logging system is difficult to troubleshoot, and the data transmission efficiency is low. And the technical problem that the ground decoding board only supports cable communication of a single modulation mode is solved. Comprising a downhole instrument used for collecting original logging electric signals; the mode transformer is used for performing impedance matching processing on the original logging electric signal to obtain a preprocessed logging signal; the amplifier module is used for performing method processing on the preprocessed logging signal to obtain an amplified logging signal; the A / D conversion module is used for converting the amplified logging signal into a digital signal from an analog signal to obtain a digital logging signal; the modulation-demodulation module is used for decoding the digital logging signal to obtain a decoded logging signal; and the network communication module is used for uploading the decoded logging signal to logging acquisition software of an upper computer in real time.

A wireless transmit / receive unit, WTRU, can select a constellation from a set of constellations corresponding to a symbol configuration for indirect carrier modulation, ICM, based on at least one constellation performance efficacy indicator, each constellation performance efficacy indicator respectively corresponding to a constellation of the set of constellations, and use the selected constellation and symbol configuration to simultaneously harvest energy and transmit data.

A base station apparatus performs communication with a plurality of user apparatuses. The base station apparatus includes a transmission unit that transmits a plurality of radio signals to the plurality of user apparatuses; and a control unit that arranges periodic blocks including a synchronization signal and system information in one or a plurality of radio signals from among the plurality of radio signals on the basis of a subcarrier spacing.

This application provides a communication method and apparatus. The communication method includes: A transmit device uses different ZC sequences to represent a first OOK symbol ON and a second OOK symbol ON. The first OOK symbol ON and the second OOK symbol ON correspond to different ZC sequences, and are used as signal inputs before DFT in a DFT-s-OFDM generation procedure. According to the communication method provided in this application, flatness of a DFT-transformed frequency-domain signal can be improved. In this way, transmission performance of an OOK signal generated through DFT-s-OFDM on a frequency-selective channel is improved.

Provided is an electronic device including processing circuitry configured to generate at least one signal according to a first communication protocol by referencing a lookup table, the lookup table including simulation waveform information, and the simulation waveform information simulating a second communication protocol different from the first communication protocol, and transmit the at least one signal, the at least one signal including a data packet.

Indication of a single-frequency activation signal or a dual-frequency activation signal for an A-IoT system. This specification describes systems, methods, and apparatus for an environmental Internet of Things (A-IoT) system. According to a first aspect of the present specification, there is described an apparatus comprising means for, in response to determining an occurrence of a triggering condition, switching the apparatus between a first receiving mode in which the triggering condition is activated and a second receiving mode in which the triggering condition is activated. In a first reception mode, the apparatus is configured to receive a first type signal comprising a backscatter signal from the passive device using a first modulation type at a first frequency, and in a second reception mode, the apparatus is configured to receive a second type signal comprising a backscatter signal from the passive device using a second modulation type at a second frequency.

To provide a communication device capable of properly setting the radio waveform.SOLUTION: The communication device includes: a control circuit that sets a radio waveform of a signal depending on the radio frequency band used to transmit or receive signals; and a communication circuit that transmits or receives signals based on the setting of the radio waveform.SELECTED DRAWING: Figure 1

The application discloses a laser microwave hybrid communication adaptive modulation method based on machine learning, comprising: acquiring a weather data set, and establishing a channel state set according to weather data in the weather data set; training a random forest model RFM by using the weather data set and the channel state set, and obtaining the trained random forest model RFM; acquiring real-time weather data, inputting the weather data into the trained random forest model RFM, and obtaining a current optimal channel state D i ; judging whether an average error rate P i under the current channel state D e is less than a target error rate P e,obj , if not, adjusting the random forest model RFM until the current average error rate P e is less than the target error rate P e,obj , and simultaneously judging whether the currently executed channel state is consistent with the optimal channel state, if not, executing channel state switching, and completing switching of the laser microwave hybrid link. The influence of bad weather on the channel is reduced, and the communication efficiency is improved.

The present application relates to a Bluetooth communication method and a device. The method may be performed by a first device. The first device may establish Bluetooth connection with a second device. The method may include: performing link communication with the second device according to a first modulation mode; in a case where it is detected that the quality of link communication is less than a preset threshold, adjusting the modulation mode of the first device from the first modulation mode to a second modulation mode, and performing the link communication with the second device according to the second modulation mode. The anti-interference capability of the second modulation mode is greater than that of the first modulation mode.

Embodiments of this application disclose an interleaving method supporting unequal modulation, a subcarrier mapping method supporting unequal modulation, and a related apparatus. An interleaver includes a first interleaver and a second interleaver, the interleaver is configured to determine an order of information bits carried in a subcarrier of a first RU and a subcarrier of a second RU, and a modulation scheme of the first RU is different from a modulation scheme of the second RU. The first interleaver is configured to input information bits by row. A quantity of columns of the first interleaver is M1+M2, a quantity of rows of the first interleaver is a larger value in N1 and N2, N1 and M1 are determined based on a quantity of subcarriers of the first RU, and N2 and M2 are determined based on a quantity of subcarriers of the second RU. The second interleaver is configured to receive the information bits that are output by the first interleaver by column, and perform interleaving mapping on the information bits. According to the interleaver provided in embodiments of this application, information bits of a plurality of RUs using different modulation and coding schemes can be interleaved, to simplify a hardware structure of a communication apparatus.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A user equipment (UE) includes a transceiver configured to: transmit, to a base station (BS), UE capability information that indicates support for data-aided modulation constellations, wherein the data-aided modulation constellations support a first transmission mode utilizing data symbols for channel estimation, and receive, from the BS, a modulation and coding scheme (MCS) indication. The UE also includes a processor operably coupled to the transceiver and configured to: determine, based on the MCS indication, a first data-aided modulation constellation, and generate first modulation symbols from input bits according to the first determined data-aided modulation constellation. The transceiver is further configured to transmit, to the BS, the first modulation symbols.

Provided are a data transmission method and apparatus, and a storage medium. The data transmission method comprises: selecting a parameter set from among N parameter sets, wherein the parameter set comprises a first indication and a second indication, the first indication being used for indicating an execution mode of a first inverse Fourier transform, and the second indication being used for indicating an execution mode of a second Fourier transform; and performing data transmission on the basis of the selected parameter set.

This application provides a communication method and a communication apparatus. The method provides a solution that can further improve spectral efficiency of data transmission. The method includes: A first device generates first data (for example, the first data may be a physical layer protocol data unit or a part of data of a physical layer protocol data unit), and sends the first data to a second device on a resource unit, where the resource unit corresponds to or uses at least two different modulation and coding schemes. The resource unit may be any one of a 26-tone resource unit, a 52-tone resource unit, a 106-tone resource unit, a 242-tone resource unit, a 484-tone resource unit, and a 996-tone resource unit. The resource unit can use the at least two different modulation and coding schemes for data transmission in one transmission process, so that spectral efficiency of data transmission can be further improved.

The present invention relates to a signal design technique resistant to phase distortion and may provide a method of a transmitter, the aspect comprising the steps of: modulating a sequence of source bits to be transmitted to a receiver to generate a first block of symbols; inserting at least one pilot into the first symbol block to generate a second symbol block; performing cumulative linear coding on the second symbol block to generate a third symbol block; performing real phase conversion on the third symbol block to generate a first signal converted to a phase value; adding a cyclic prefix (CP) to the first signal to generate a second signal; and wirelessly transmitting the second signal to the receiver.

A wireless communication terminal communicating wirelessly with a base wireless communication terminal comprises a processor configured to receive a trigger frame for switching an operation mode from a first operation mode to a second operation mode from the base wireless communication terminal, wherein the wireless communication terminal receives only a PPDU which has a predetermined format and is transmitted by a predetermined modulation method in the first operation mode, and receives a PPDU other than the PPDU which has the predetermined format and is transmitted by the predetermined modulation method in the second operation mode, transmit an initial frame in response to the trigger frame in the second operation mode, and determine whether to switch back to the first operation mode based on receiving a subsequent frame subsequent to the initial frame within a timeout interval.

Methods, systems, and devices for wireless communication are described that provide for uplink channel multiplexing and waveform selection. Uplink channels to be transmitted from one or more user equipment (UEs) to a base station are multiplexed together or separately into an uplink subframe. Each UE is capable of using different waveforms to transmit different channels. Reference signals are communicated according to an RS pattern, which is symmetric across uplink and downlink channels.