Abstract: Aspects described herein relate to signals transmitted in federated learning (FL) of a neural network (NN) using wireless communications. A transmitting device can generate an analog modulation signal to indicate an updated value for one or more coefficients for a federated learning (FL) procedure for a neural network, and the transmitting device can transmit the analog modulation signal over time and frequency resources configured for a UE group of multiple UE groups, where each UE group of the multiple UE groups is associated with a range of values of a measured signal metric. The receiving device can receive a combined signal from one or more UE groups and can normalize the received signal by power to determine the combined coefficient update for the NN.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. Some aspects relate to polar encoding and decoding of communications. Aspects described herein provide techniques by which two forms of polar encoding, bit-interleaved coded modulation (BICM) and multi-level coding (MLC) can be implemented using the same transmit procedure and hardware. For example, aspects described herein provide for a modulation constellation labeling associated with one form of polar coding, such as a set partitioning labeling, to be transformed such that polar coding using the transformed modulation constellation and BICM is equivalent to MLC polar coding. Aspects described herein also provide signaling related to these techniques.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a capability message, the capability message including an indication of a UE capability for per-layer codeword mapping and a channel state feedback report option. The UE may further receive a channel state feedback configuration that includes an indication of a channel state feedback report type, where the channel state feedback report type is a wideband report, a sub-band report, or a combination thereof. Moreover, the UE transmit a channel state feedback report in accordance with the channel state feedback report option and the channel state feedback report type. Further, the channel state feedback report may be contingent on the UE capability for per-layer codeword mapping and comprising information associated with per layer mutual information.

Abstract: A method for wireless communication by a receiving device includes predicting with an artificial neural network, at each data block of a set of data blocks, a least complex demodulator that will achieve a goal. The predicting is based on features of a data block expected to be received at the receiving device. The method also includes dynamically selecting the least complex demodulator, from a set of demodulators with different levels of complexity, based on the features of the data block expected to be received. The method further includes demodulating the data block with the selected demodulator for the data block.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network node, supported receiver type information including a list of one or more receiver types supported by the UE. The UE may receive, from the network node, an indication of one or more selected receiver types, from the one or more receiver types supported by the UE, to be used for receiving one or more portions of a downlink communication. The UE may receive, from the network node, the one or more portions of the downlink communication using the one or more selected receiver types. Numerous other aspects are described.

Abstract: The apparatus configured to transmit, to a network device, a first indication of a minimum time associated with switching between a first frequency used for DL communication and a second frequency used for UL communication, receive, from the network device via the first frequency, a second indication scheduling an UL communication at a time that is no sooner than the minimum time after the second indication is received, switch from the first frequency to the second frequency based on the second indication, and transmit the scheduled UL communication via the second frequency.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network node, supported receiver type information including a list of one or more receiver types supported by the UE. The UE may receive, from the network node, an indication of one or more selected receiver types, from the one or more receiver types supported by the UE, to be used for receiving one or more portions of a downlink communication. The UE may receive, from the network node, the one or more portions of the downlink communication using the one or more selected receiver types. 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 transmit, to a network node, supported receiver type information including a list of one or more receiver types supported by the UE. The UE may receive, from the network node, an indication of one or more selected receiver types, from the one or more receiver types supported by the UE, to be used for receiving one or more portions of a downlink communication. The UE may receive, from the network node, the one or more portions of the downlink communication using the one or more selected receiver types. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication and to product codes for wireless communications. Some aspects more specifically relate to enabling a Bose-Chaudhuri-Hocquenghem (BCH) product code for wireless communications. In some aspects, a transmitter and/or a receiver may flexibly select parameters for a BCH product code based on or otherwise associated with communication parameters of a wireless communication to be encoded, such as the modulation and coding scheme (MCS) and/or allocation size, among other examples. For example, the transmitter and/or the receiver may select parameters for the BCH product code to ensure that the BCH product code is designed to handle a quantity of channel bits associated with a current configuration of a channel (for example, of an uplink data channel and/or a downlink data channel) and to increase a correction capability associated with the BCH product code for the current configuration of the channel.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit an indication of a dynamic precoding resource block group (PRG) size UE capability. The UE may receive, in accordance with the dynamic PRG size UE capability, a dynamic PRG size configuration. The UE may receive, in accordance with the dynamic PRG size configuration, an indication of a dynamic PRG size of a PRG that contains a plurality of resource elements (REs) associated with a common Q matrix derived from a QR decomposition. The UE may receive data using the dynamic PRG size. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an indication of a capability of the UE to communicate in accordance with a polar multi-layer coding (MLC) multiple input multiple output (MIMO) communication scheme. The UE may receive a configuration for communication in accordance with the polar MLC MIMO communication scheme, wherein the configuration indicates a sub-block size threshold. The UE may communicate a message in accordance with the polar MLC MIMO communication scheme based at least in part on a determination that a sub-block size for the message satisfies the sub-block size threshold.

Abstract: Methods, systems, and devices for reporting redundancy version with feedback information. are described. A user equipment (UE) may transmit, to a base station, feedback information corresponding to a code block group in conjunction with an indication of a redundancy version for retransmission of the code block group. The UE may monitor for the retransmission of the code block group based on the indication of the redundancy version for the retransmission of the code block group. The UE may then decode the retransmission of the code block group based on the monitoring and the redundancy version for the retransmission of the code block group.

Abstract: In some aspects of the systems, methods, and devices described herein, one or more asymmetric modulation constellations may be utilized. For example, a modulation constellation utilized to modulate data symbols may be asymmetric. In some approaches, an asymmetric modulation constellation may be generated by introducing a phase shift (e.g., cyclic shift, phase rotation) to one or more constellation points of a modulation constellation. An asymmetric modulation constellation may allow detecting phase shifts without ambiguity. For example, a user equipment (UE) may perform channel estimation or phase noise estimation aided by data symbols that are modulated with an asymmetric modulation constellation. In some examples, a UE may receive a message from a network entity indicating a configuration of an asymmetric modulation constellation.

Abstract: Various aspects of the present disclosure generally relate to wireless communication, and to channel aware modulation order selection for wireless communications. For example, a user equipment (UE) may transmit one or more channel-related parameters to a network node. The network node may select a modulation order in accordance with the one or more channel-related parameters and one or more network parameters that are transmitted to the UE. The network node may modulate a bitset in accordance with the modulation order to generate a modulated bitstream that is transmitted to the UE. The UE may select the same modulation order in accordance with the one or more channel parameters and the one or more network parameters received from the network node, such that the UE may demodulate the modulated bitstream in accordance with the modulation order to generate a demodulated bitset.

Abstract: Some wireless communication systems utilize reference signaling to characterize a channel. For example, a network entity may transmit a set of reference signals. A user equipment (UE) may receive the reference signaling and determine a channel estimate based on the reference signaling. The UE may utilize the channel estimate to determine an equalizer for subsequent communications. Some examples of the techniques described herein may reduce complexity or power consumption for equalizer coefficient calculation. In some aspects, reference signaling overhead may be reduced or throughput may be increased. In some examples, decimation may be applied in the calculation of equalizer coefficients. For instance, calculations may be performed for frequency domain or time domain resources, but with a two-dimensional (2D) decimation factor for the two dimensions. In some cases, the 2D decimation factor (e.g., frequency domain and time domain decimation factors) may significantly reduce the quantity of calculations.

Abstract: A method for wireless communication at UE and related apparatus are provided. In the method, the UE groups a set of RBs of a slot into multiple PRGs having multiple PRG sizes; and communicates with a network entity based on multiple precoding matrices respectively associated with the multiple PRGs having the multiple PRG sizes. The UE performs a precoding procedure based on the multiple PRG sizes to obtain the multiple precoding matrices, and each precoding matrix of the multiple precoding matrices is based on a concatenated channel matrix based on a corresponding PRG size of the multiple PRG sizes.

Abstract: Certain aspects of the present disclosure provide techniques for reporting channel state information per user equipment-supported demodulator. The techniques may include a method of wireless communication by a user equipment (UE), the method involving generating channel state information (CSI) for a plurality of demodulator types supported by the UE, and transmitting, to a network entity, one or more reports, each report including CSI for at least one of the demodulator types.

Abstract: Methods, apparatuses, and computer-readable media are provided including approaches for partial code block group (CBG)-based link adaptation in wireless communication. An apparatus sends a message to a wireless device indicating a partial CBG, and obtains retransmitted data in the partial CBG and additional data in the remainder of the CBG in response to a non-acknowledgment of the CBG. The partial CBG is based on mutual information between the apparatus and the wireless device representing an average spectral efficiency observed from historical CBGs. Support for link adaptation based on the partial CBG may be indicated in capability information, and the granularity of the partial CBG may be confirmed prior to establishing a radio resource control connection. These methods boost throughput, provide efficient resource utilization, and ensure compatibility without compromising quality of service.

Abstract: The apparatus may be a UE configured to obtain a configuration for an antenna identification associated with a plurality of antennas at the UE, output, for a network device and based on the configuration for the antenna identification, a set of antenna identification signals, and obtain, based on the set of antenna identification signals, analog reception combining information. The apparatus may also be configured to communicate with the network device based on the analog reception combining information. The apparatus may be a network device configured to output a configuration for an antenna identification associated with a plurality of antennas at a UE, obtain, from the UE and based on the configuration for the antenna identification, a set of antenna identification signals, and output, based on the set of antenna identification signals, analog reception combining information.

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may receive a message from a network entity that indicates a channel-based resource selection procedure for one or more feedback messages. The channel-based resource selection procedure may be based on one or more channel estimates. The channel-based resource selection procedure may include a resource selection rule, a neural network (NN) algorithm, an explicit resource allocation, or a combination thereof. The UE may receive a downlink message via a downlink channel. The UE may transmit, on a set of resources associated with an uplink channel, one or more feedback messages that indicate whether the downlink message was successfully decoded. The set of resources may be based on the one or more channel estimates in accordance with the channel-based resource selection procedure.