Methods, systems, and devices for wireless communication are described. A wireless device may receive bundling indicators for a plurality of downlink transmissions and corresponding downlink assignment indicators associated with the bundling indicators, determine a demodulation reference signal (DMRS) bundling configuration based on the bundling indicators and the corresponding downlink assignment indicators, and process demodulation reference signals according to the DMRS bundling configuration. A wireless device may also receive bundling indicators for a plurality of downlink transmissions, determine a demodulation reference signal (DMRS) bundling configuration based on the bundling indicators and a gap between successive transmissions of the plurality of downlink transmissions, and process demodulation reference signals according to the DMRS bundling configuration.

Infrastructure equipment forming part of a wireless communications network configured to receive data from a communications device via a communications channel between the infrastructure equipment and the communications device. The infrastructure equipment comprises circuitry configured to receive, from the communications device, a request for a resource allocation, to receive one or more reference symbols from the communications device, to estimate based on the received reference symbols, for each of a plurality of resource units, RUs, of the communications channel, a signal to interference and noise ratio, SINR, sequence of the communications channel, and to perform a first transform followed by a second transform on the SINR sequence to produce a cepstrum of the SINR sequence, the second transform being an inverse of the first transform, and to encode and to transmit the cepstrum to the communications device.

Provided are a data transmission method and apparatus, a transmitter, a receiver and a storage medium. The method includes determining the number N of resource units and corresponding N resource units, where N is an integer greater than or equal to 1; acquiring M data blocks to be transmitted, M is an integer greater than or equal to 1, where each data block of the M data blocks includes information for indicating the number N of resource units and a position of at least one of the N resource units; and transmitting the M data blocks on the N resource units.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may perform both a channel estimation and a non-linearity estimation (e.g., a power amplifier (PA) model estimation) on a demodulation reference signal (DMRS) transmitted by a base station. For example, the DMRS may include two portions that correspond to two peak-to-average power ratio (PAPR) values. Low PAPR values may enable the UE to perform the channel estimation, and high PAPR values may enable the UE to perform the PA non-linearity estimation. Accordingly, a first portion of the DMRS may correspond to a lower PAPR value, and the second portion of the DMRS may correspond to a higher PAPR value. In some examples, the base station may signal different parameters for each portion of the DMRS to the UE, or the UE may use fixed values to receive each portion of the DMRS.

Methods, systems, and devices for wireless communication are described. A communication device, such as a user equipment (UE) may receive a set of demodulation reference signal (DMRS) samples including a first subset of DMRS samples associated with a first power level and a second subset of DMRS samples associated with a second power level. The UE may perform a digital post distortion operation based on the first subset of DMRS samples associated with the first power level and the second subset of DMRS samples associated with the second power level. The UE may receive the wireless communication based on performing the digital post distortion operation.

A method by which a terminal transmits an SRS can comprise the steps of: receiving, from a base station, first information indicating symbols to which the SRS is transmitted among a plurality of symbols, when the terminal is configured to perform antenna switching for an SRS transmission on the plurality of symbols; and transmitting the SRS on the indicated symbols, wherein the SRS is transmitted through antenna ports respectively corresponding to the indicated symbols, and the antenna ports respectively corresponding to the indicated symbols can be different from each other.

A method and a receiver device are disclosed for channel estimation of a broadcast channel. According to an embodiment, the receiver device determines a first channel estimation of demodulation reference signal (DMRS) from a transmitter device. The receiver device determines a second channel estimation of one or more synchronization related reference signals from the transmitter device. The receiver device determines a final channel estimation of a broadcast channel from the transmitter device based at least on the first and second channel estimations.

Certain aspects of the present disclosure provide techniques for channel estimation for two-stage sidelink control using sidelink data channel demodulation reference signals (DMRS). A user equipment (UE) can transmit DMRS for the sidelink data channel. The UE may transmit the second stage of the sidelink control using antenna ports or a precoder used for the sidelink data channel. The receiving device may receive the DMRS, estimate the channel, and demodulate the second stage of the sidelink control based on the estimated channel. The receiving device may flexibly determine the DMRS to use for the estimation and demodulation.

Example aspects include a method, apparatus, and computer-readable medium for wireless communication at a user equipment (UE) of a wireless communication network, comprising receiving, from a base station, configuration information scheduling one or more receive occasions and one or more transmit occasions. A full-duplex portion of an overlapping occasion comprises a portion of a first receive occasion of the one or more receive occasions overlapping with a portion of a first transmit occasion of the one or more transmit occasions. A half-duplex portion of the overlapping occasion comprises a remaining portion of the first receive occasion or a remaining portion of the first transmit occasion. The aspects further include performing full-duplex communications during the full-duplex portion of the overlapping occasion using overlapping full-duplex associated parameters. Additionally, the aspects further include performing half-duplex communications during the half-duplex portion of the overlapping occasion using non-overlapping half-duplex associated parameters.

This disclosure provides methods, devices and systems for radio frequency (RF) sensing in wireless communication systems. In some implementations, a transmitting device may transmit a sounding dataset, over a wireless channel, to a receiving device. The sounding dataset may include information carried in one or more training fields configured for channel estimation and sounding control information based, at least in part, on a configuration of the transmitting device. The receiving device may acquire channel state information (CSI) for the wireless channel based on the received sounding dataset and selectively generate a channel report for the wireless channel based, at least in part, on the CSI and the sounding control information. The channel report may indicate changes to the wireless channel which, in turn, may be used to sense objects in the vicinity of the transmitting device or the receiving device.