Abstract: An apparatus for wireless communication at a UE is provided. The apparatus is configured to receive one or more pilot signals superimposed on a data signal from a network entity. The apparatus is further configured to receive an indication of a first set of locations in at least one of time or frequency from the network entity. The data signal or the scrambled data signal is near orthogonal to a channel estimation filter of the transmission channel between the network entity and the UE at the first set of locations. The apparatus is further configured to transmit characteristics of the transmission channel to the network entity. The characteristics of the transmission channel is determined based at least in part on the first set of locations.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may receive a distortion indication comprising distortion information associated with a signal transmission configuration corresponding to a second network node. The first network node may perform, based at least in part on the distortion information, a digital post distortion (DPoD) operation associated with a signal having a distortion characteristic corresponding to the distortion information. The first network node may communicate with the second network node based at least in part on performing the DPoD operation. Numerous other aspects are provided.

Abstract: Methods, apparatuses, and computer-readable storage medium are provided. The methods include receiving, from a UE, an indication of a capability of the UE associated with one or more operating modes. The methods further include transmitting, to the UE, a request for a TR report corresponding to an amount of TR locations, the amount of TR locations being associated with at least one of a PAPR gain or a UE performance gain. The methods further include receiving, from the UE, a TR report comprising an indication of the amount of TR locations based on one or more parameters, the one or more parameters including at least one of a UE speed, a Doppler spread, a delay spread, a SINR, a MCS, a rank indicating an amount of data layers, or a channel response, the amount of TR locations being associated with the one or more operating modes.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a reference signal. The UE may transmit, to the network entity and via a feedback channel, digital pre-distortion (DPD) information that is based at least in part on the reference signal, wherein the DPD information indicates an estimate of non-linearities of a power amplifier at the network entity based at least in part on the reference signal. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A network entity may determine a number of resources for next transmissions following a first transmission. For example, a user equipment (UE) may calculate an average mutual information (MI) of a single log likelihood ratio (LLR) and an MI for each code block. The UE may transmit feedback indicating a quantity of resources to achieve a target MI based on the calculated averages. A wireless device may monitor a feedback buffer utilization associated with the UE. A network entity may retransmit existing code blocks or output a transmission using repetition based on the monitoring and utilization thresholds. The network entity may indicate to the UE a latency level code block attribute and increase a quantity of resources for following retransmissions by a boosting factor based on the latency level and a threshold.

Abstract: Example aspects include a method, apparatus, and computer-readable medium for scheduling transmissions of transport blocks (TBs) at a base station of a wireless communication network, comprising accessing static transmission information indicating configuration information of TB transmissions. The aspects further include transmitting, to a user equipment (UE), first downlink control information (DCI) corresponding to a first transmission. Additionally, the aspects include transmitting, to the UE according to the static transmission information and the first DCI, the first transmission comprising at least a portion of encoded bits of the TB. Additionally, the aspects include receiving, from the UE, an indication of at least one code block that failed to be successfully decoded. Additionally, the aspects include transmitting, to the UE, second DCI corresponding to a second transmission.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, an indication that one or more channel condition parameters that are associated with uplink channel estimations are to be signaled to the UE to be used for downlink channel estimations. The UE may receive, from the base station, a report of the one or more channel condition parameters that are associated with the uplink channel estimations. Numerous other aspects are described.

Abstract: In a wireless communication system, a peak to average power ratio (PAPR) may affect the efficiency of a power amplifier. To reduce a PAPR, a transmitting device may utilize a PAPR reduction precoding that changes a received signal without performance impact so the overall transmit PAPR is reduced. The transmitting device constructs a frequency domain (FD) response to the PAPR reduction precoding, estimates a channel to one or more receiving devices, and applies the PAPR reduction precoding to the estimated channel. The transmitting device constructs a multiple input multiple output (MIMO) precoding matrix considering the FD response of the PAPR reduction precoding and applies the MIMO precoding matrix and the PAPR reduction precoding to an FD signal. A receiving device applies the FD response conjugated to a received FD signal from the transmitting device and processes at least a received reference signal based on the PAPR reduction precoder.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques support blind common phase error (CPE) and residual carrier frequency offset mitigation. Generally, the described techniques provide for blind CPE mitigation at a receiving device without a phase tracking reference signal (PTRS) associated with less overhead and improved performance as compared to use of a PTRS to mitigate CPE. A receiving device may receive a shared channel message in a scheduled shared channel allocation in accordance with a PTRS configuration that omits a PTRS allocation based on a capability of the receiving device to apply blind CPE mitigation for shared channel receptions. In some examples, with a single DMRS symbol allocation, blind CPE mitigation for each subsequent data symbol of a shared channel message may be based on the blind CPE estimation for the previous symbol, which may enable robust mitigation of a residual carrier frequency offset.

Abstract: A base station may configure a user equipment (UE) with a subset of reference signal (RS) configurations among a set of RS configurations, and transmit a plurality of RSs based on the subset of RS configurations. The RS may be a demodulation RS (DMRS). The plurality of RSs may be configured to span each of the plurality of resource elements (REs) in the active bandwidth part (BWP). The UE may receive the plurality of RSs based on the subset of RS configurations and perform a spur detection based on the plurality of RSs received based on the subset of RS configurations. Each RS configuration of the set of RS configurations may be associated with at least one of the subset of RS configurations that is associated with the plurality of RSs spanning each of the plurality of REs in the active BWP.

Abstract: Certain aspects of the present disclosure provide techniques for downlink control information (DCI) format for power efficiency. A method that may be performed by a user equipment (UE) includes receiving, from a base station (BS), a first DCI message in a first symbol of a downlink control channel, the first DCI message comprising a portion of an identifier that consists of less than all parts of the identifier, the first symbol being one of a plurality of symbols in a time period. The method may also include, when the portion of the identifier corresponds to the UE, receiving downlink data via resources indicated by a second DCI message, the second DCI message received in a second symbol of the downlink control channel, the second DCI message indicating the resources for receiving downlink data, the second symbol being another one of the plurality of symbols in the time period.

Abstract: Aspects described herein relate to converting, by applying a non-linear function, a symbol indicating first data into an analog signal for transmitting to a network node, wherein applying the non-linear function indicates second data, separate from first data, and transmitting the analog signal to the network node. Additional aspects relate to receiving an analog signal from a user equipment (UE), and estimating a non-linear function applied to the analog signal in converting a symbol indicating first data into the analog signal, wherein estimating the non-linear function indicates second data, separate from first data.

Abstract: Certain aspects of the present disclosure provide techniques for digital pre-distortion (DPD). An apparatus for wireless communication generally includes a power amplifier (PA); a first DPD circuit, a second DPD circuit, and a transmitter. The first DPD circuit is generally configured to: obtain an input signal; apply a first DPD to the input signal to generate a first resulting signal; and output the first resulting signal to the second DPD circuit. The second DPD circuit is generally configured to: obtain the first resulting signal from the first DPD circuit; apply a second DPD to the first resulting signal to generate a second resulting signal; and output the second resulting signal to the PA. The PA is generally configured to amplify the second resulting signal to generate an amplified second resulting signal. The transmitter is generally configured to transmit the amplified second resulting signal to a second apparatus.

Abstract: Aspects of the present disclosure include methods, apparatuses, and computer readable media for identifying an initial rank, modulating information into a first plurality of layers associated with the initial rank, scrambling the first plurality of layers by a first common scrambler to generate a first plurality of scrambled layers, transmitting, to the receiver, the first plurality of scrambled layers, receiving an indication of failed demodulation of a portion of the first plurality of scrambled layers, modulating at least a portion of the information into a second plurality of layers, wherein the second plurality of layers includes a same number of layers as the first plurality of layers, scrambling the second plurality of layers by a second common scrambler to generate a second plurality of scrambled layers, and transmitting, to the receiver, the second plurality of scrambled layers.

Abstract: One or more techniques for sharing control channel and pilot resources are disclosed.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink signaling configured to support obtaining spatial basis functions associated with antenna ports of a network node. The UE may receive a downlink communication from the network node, the receiving the downlink communication including decoding the downlink communication using digital post-distortion (DPoD) correction that is based at least in part on the spatial basis functions. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may receive, from a second UE and using a first fast Fourier transform (FFT) window configuration, a physical sidelink control channel (PSCCH) signal associated with a physical sidelink shared channel (PSSCH) signal. The UE may identify, based at least in part on the reception of the PSCCH signal, one or more values of one or more parameters estimated from the PSCCH signal. The UE may select, based at least in part on the one or more values of the one or more parameters, a second FFT window configuration to be used to receive the PSSCH signal. The UE may receive, from the second UE, the PSSCH signal using the second FFT window configuration, Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a demodulation reference signal (DMRS) configuration indicating an intra-slot DMRS pattern. The UE may receive, from the network entity, an indication of an inter-slot DMRS pattern. The UE may communicate, with the network entity, a message that is associated with a time domain resource allocation that includes multiple slots, the message including one or more DMRSs in accordance with the intra-slot DMRS pattern and the inter-slot DMRS pattern. Numerous other aspects are provided.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for signaling mechanisms associated with transmission puncturing schemes for rateless coding. In some aspects, a transmitting device may encode a message using a rateless code associated with a cumulative encoding of various portions of the message and may perform transmission puncturing to adapt a bit rate of related signal transmissions. The transmitting device may signal an indication of the transmission puncturing scheme, and potentially one or more modifications to the transmission puncturing scheme, to a receiving device via control signaling. The transmitting device may modify the transmission puncturing scheme in accordance with prioritizing retransmissions for some cumulative portions of the message ahead of other cumulative portions, such as by granting prioritized cumulative portions of the message relatively earlier transmission occasions in the transmission puncturing scheme.

Abstract: Methods, systems, and devices for wireless communication are described. A communication device may receive control signaling indicating a downlink reference signal configuration, for example, a demodulation reference signal (DMRS) configuration. The communication device may receive a downlink reference signal (e.g., a DMRS) over a downlink control channel (e.g., a physical downlink control channel (PDCCH)) during an initial symbol duration of a transmission time interval (TTI). The downlink reference signal may include a set of bits including a first subset of bits including network temporary identifier bits and a second subset of bits including constellation bits associated with a downlink data channel (e.g., a physical downlink shared channel (PDSCH)). The communication device may process the downlink reference signal (e.g., a DMRS) based on the downlink reference signal configuration (e.g., a DMRS configuration).