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: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a distributed unit (DU) may receive, from a radio unit (RU) associated with the DU, an indication of a non-stationary interference condition. The DU may adjust a parameter of at least one cell associated with the RU using the indication. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. In a wireless communications system, a network entity may determine to transmit first downlink control information (DCI) associated with a demodulation reference signal (DMRS) allocated to multiple resource elements of a control channel. The network entity may select a CDM group used for encoding second (e.g., future) DCI, for example, based on identifying a phase change pattern associated with the CDM group. A user equipment (UE) may monitor for the DMRS during a first time interval, and determine the CDM group for encoding the second DCI, for example using blind decoding. In some cases, the UE may receive the second DCI via the control channel based on the CDM group determined in association with the second DCI.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a capability message indicating support for adaptive power amplifier back-off for uplink transmissions. The UE may receive, based at least in part on the capability message, an identifier for an adaptive power amplifier back-off scheme to be applied to an uplink transmission. The UE may perform the uplink transmission according to the adaptive power amplifier back-off scheme, wherein the adaptive power amplifier back-off scheme comprises a change to at least one of an error vector magnitude level for a power amplifier of the UE or an output power of the power amplifier of the UE, wherein the change triggers the power amplifier to operate in a non-linear region such that the uplink transmission includes a non-linear component.

Abstract: Methods, systems, and devices for dynamic physical downlink shared channel (PDSCH) mapping modes are described. In some examples, a user equipment (UE) may receive a first control message identifying one or more sets of resources around which the UE may rate match for a downlink channel. In some examples, the UE may receive a second control message including an indication that the UE may perform either rate matching around at least one set of resources of the one or more sets of resources or receiving the downlink channel on the at least one set of resources. As such, the UE may receive signals on the downlink channel according to the indication received in the second control message.

Abstract: Certain aspects of the present disclosure provide techniques for relaying physical sidelink control channel in sidelink communications. A method that may be performed by a first user equipment (UE) includes receiving a sidelink control information (SCI) transmission from a second UE, the SCI pointing to one or more resources for a retransmission of the SCI by the second UE. The method may include transmitting the SCI to a third UE using the one or more resources for the retransmission of the SCI by the second UE.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive interference assistance information associated with interference cancelation or suppression for one or more communications. The UE may transmit interference assistance feedback that indicates one or more parameters of interference cancelation or suppression based at least in part on the interference assistance information. The UE may receive a communication within a set of time and frequency resources associated with a multiple user (MU)-multiple-input multiple-output (MIMO) group, the MU-MIMO group associated with the interference assistance feedback. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit first control information that is indicative of noise (e.g., phase noise, additive white gaussian noise (AWGN), or both) that impacts a spectral efficiency of a modulation and coding scheme (MCS). The MCS may be associated with a constellation of points that may be each representative of a respective candidate sequence of bit values encoded with a corresponding combination of signal amplitude and carrier phase. The UE may receive, based on transmitting the first control information, second control information that indicates a set of partitioning parameters indicative of a hierarchical partitioning of the constellation into a multiple subsets of points. As such, the UE may decode a message, modulated via the MCS, using the hierarchical partitioning indicated by the set of partitioning parameters.

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: Aspects are provided including one or more techniques for graphics processing involving hierarchical modulation and foveated rendering. A first wireless device obtains, from a network entity, a hierarchical modulated image including higher and lower priority bits. The first wireless device also obtains gaze information from a second wireless device indicating an associated foveal region. In response to the gaze information, the first wireless device processes a portion of the hierarchical modulated image associated with the lower priority bits using the gaze information. For example, the device decodes low priority bits in the hierarchical modulated image in regions closer to the fovea. The first wireless device subsequently provides an image including the processed portion to be rendered at the second wireless device. For example, the processed image may have a higher resolution in the regions closer to the fovea but a lower resolution in regions farther from the fovea.

Abstract: Methods, systems, and devices for notifying puncturing of a physical downlink shared channel (PDSCH) are described. In some examples, a user equipment (UE) may receive, from a base station, a first control message identifying a set of resources used for transmissions by the base station. The UE may receive a second control message that includes an indication of a procedure used by the base station for a collision between the set of resources and a downlink channel transmitted to the first UE by the base station. In some examples, the UE may receive and decode signals on the downlink channel according to the indicated procedure.

Abstract: Certain aspects of the present disclosure provide techniques for relaying physical sidelink control channel in sidelink communications. A method that may be performed by a first user equipment (UE) includes receiving a sidelink control information (SCI) transmission from a second UE, the SCI pointing to one or more resources for a retransmission of the SCI by the second UE. The method may include transmitting the SCI to a third UE using the one or more resources for the retransmission of the SCI by the second UE.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a first communication having a first frequency offset correction applied. The UE may receive an indication of a frequency offset of the first communication. The UE may transmit a second communication having a second frequency offset correction applied, the second frequency offset correction based at least in part on the first frequency offset correction and the frequency offset of the first communication. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. An access device in a network of access devices may determine that a wireless device is in a coverage area of one of the access devices based on a coverage pattern of the access devices and a sensor coupled with the access device. The access device may estimate a trajectory of the wireless device based on information obtained by the sensor. After estimating the trajectory of the wireless device, the access device may transmit an indication to one or more of the other access devices to enter (or remain in) an active state based on the trajectory of the wireless device and the coverage pattern. The indication may also include a set of beams for the other access device to activate.

Abstract: Methods, systems, and devices for wireless communications are described. Some systems may support digital post-distortion (DPoD) processing at a base station. In some such systems, a user equipment (UE) may process a data message for transmission, where a resulting signal associated with the data message includes non-linear characteristics that are handled by DPoD on the receiver-side. The non-linear characteristics may cause the signal to leak into out-of-band (OOB) resources, potentially resulting in interference. In some examples, the UE may transmit the data message to the base station in a multi-user system. To support mitigation of non-linear interference on signaling by other UEs, the UE may additionally transmit pilot signals in OOB resources (e.g., in addition to in-band resources) where the non-linearity may be expected to negatively affect other communications. The base station may use the OOB pilot signals to perform channel estimation and interference mitigation.

Abstract: A communications device inputs channel state information to an artificial neural network. The communications device predicts weather conditions with the artificial neural network based on the channel state information. The communications device further adjusts communications based on the predicted weather conditions.

Abstract: Certain aspects of the present disclosure provide techniques for relaying physical sidelink control channel in sidelink communications. A method that may be performed by a first user equipment (UE) includes receiving a sidelink control information (SCI) transmission from a second UE, the SCI pointing to one or more resources for a retransmission of the SCI by the second UE. The method may include transmitting the SCI to a third UE using the one or more resources for the retransmission of the SCI by the second UE.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive, from a network entity, a request to report one or more frequency corrections, the request including an indication of one or more reporting parameters for the one or more frequency corrections. The network entity may transmit a set of one or more reference signals associated with performing the one or more frequency corrections at the UE. The UE may monitor for the set of one or more reference signals and transmit, to the network entity, a report indicating the one or more frequency corrections in accordance with the one or more reporting parameters. The UE may transmit the report according to a periodicity, according to a trigger, or both indicated in the one or more reporting parameters. The network entity may perform channel estimations based on the report indicating the one or more frequency corrections.

Abstract: A communications device inputs channel state information to an artificial neural network. The communications device predicts weather conditions with the artificial neural network based on the channel state information. The communications device further adjusts communications based on the predicted weather conditions.

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for reconfiguring a resource envelope allocated to a distributed unit (DU) or a radio unit (RU) based on power consumption at the DU or the RU. A virtual radio access network (VRAN) manager (e.g., a host platform for a VRAN) may perform baseband pooling to allocate a resource envelope to a DU or an RU. After an initial allocation of a resource envelope to a DU or an RU, the DU, the RU, or both may report an amount of power consumed during signal processing for one or more dimensions of the resource envelope. The VRAN manager may then reconfigure a resource envelope for the DU or the RU based on the power consumption at these devices (e.g., to minimize operating expenses (OPEX) or maximize utilization of the resource envelope).