Abstract: Methods, systems, and devices for wireless communications are described. Techniques described herein provide for formulating single carrier waveforms into an orthogonal frequency-division multiple access (OFDMA) framework. To fit into the cyclic prefix OFDM (CP-OFDM) grid, a frequency domain fast Fourier transform (FFT) may be applied to the single carrier waveform, a bandwidth expansion and spectrum shaping may be applied to the output of the FFT and inverse FFT (IFFT) processing may be applied to the output of the bandwidth expansion and spectrum shaping. The output of the IFFT may then be represented in an OFDM compatible manner.

Abstract: A method for wireless communication at a UE and related apparatus are provided. In the method, the UE obtains a first wideband signal having a continuous wideband bandwidth, and separates the first wideband signal into multiple narrowband segments. The multiple narrowband segments each have a narrowband bandwidth less than the continuous wideband bandwidth and different frequency shifts. The UE further performs multiple FFT operations on the multiple narrowband segments to obtain a set of processed segments respectively corresponding to the multiple narrowband segments, and aggregates the set of processed segments to obtain a second wideband signal.

Abstract: The apparatus may be an apparatus for wireless communication at a decoding device, for decoding a probabilistically-shaped quadrature amplitude modulation (QAM) signal associated with a phase modulation and an amplitude modulation. The apparatus may be configured to receive, in association with the probabilistically-shaped QAM signal, at least one symbol associated with a first amplitude and demodulate the at least one symbol based on a distance-based demodulation calculation that is adjusted based on a Maxwell-Boltzmann distribution.

Abstract: Some examples of the techniques described herein may address one or more issues for some non-linear channel codes (e.g., for artificial intelligence-based channel codes that are non-linear or that generate codes in the set of real numbers). Some of the techniques described herein, using a non-linear code with unequal error probabilities among codewords, may reduce error probability differences (e.g., may provide equal or approximately equal error probabilities) regardless of the messages to be transmitted while maintaining reduced average error probability. In some examples, scrambling may be performed to achieve reduced error probability differences among codewords for a non-linear code. Other scrambling approaches may be used to randomize inter-cell interference or to avoid biases in the generated codewords. In some approaches, scrambling may be performed after channel coding. Some examples of the techniques described herein may include performing scrambling before channel coding.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured with a bundling factor, may first generate a codebook, and may then bundle a quantity of bits into a single bit according to the bundling factor (e.g., may compress the sequence of bits into a smaller, second set of bits, where each bit of the second set of bits represents a quantity of the sequence of bits equal to the bundling factor). The UE may support cross downlink control information (DCI) bundling, in which case each bundle of the sequence of bits may be based on the bundling factor, instead of being based on the DCI (e.g., a given bundle may include feedback bits corresponding to occasions of multiple grants).

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit channel state information to a network entity, wherein the channel state information indicates a first precoding matrix index for a first antenna panel of a set of antenna panels of the network entity and a second precoding matrix index for a second antenna panel of the set of antenna panels, and wherein the second precoding matrix index is offset from the first precoding matrix index in accordance with an angle parameter associated with an angular separation between the first antenna panel and the second antenna panel relative to the UE. The UE may receive a message from the network entity according to the channel state information.

Abstract: Methods, systems, and devices for wireless communication are described. A network entity may receive first control information that schedules reception, at the network entity, of a first message during a set of time-frequency resources. The network entity may receive second control information that is associated with a time-domain resource block (TDRB) pattern, where the TDRB pattern defines a first TDRB during at least a portion of the set of time-frequency resources and the first TDRB includes a set of orthogonal frequency-division multiplexing (OFDM) symbols. The network entity may demodulate data based on the TDRB pattern. In some examples, before demodulating the data, the network entity may receive and cache the data during the first TDRB, where the demodulation is performed for the first TDRB before caching or demodulating data for subsequent TDRBs.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, using a set of resources that are shared between a first radio access technology (RAT) and a second RAT, control signaling that includes a dynamic spectrum sharing (DSS) configuration for a shared data channel. The UE may receive one or more indicators associated with the first RAT, the second RAT, or both, to coordinate communications for the shared set of resources. The UE may communicate with the network using the first RAT or the second RAT based on applying one or more of the indicators. To further support DSS, the UE may transmit UE capability information to indicate whether the UE is capable of DSS for the first RAT and the second RAT, and may apply one or more multiplexing modes for communications using the first RAT and the second RAT.

Abstract: A transmitter is provided that shapes uniformly-distributed bits into a non-uniformly distributed bits according to a parity check matrix of a linear code such that a product of the parity check matrix and the non-uniformly distributed bits equals the uniformly-distributed bits. Similarly, receiver is provided that recovers the uniformly-distributed bits from the non-uniformly distributed bits through a multiplication of the non-uniformly-distributed bits with the parity check matrix.

Abstract: Methods, systems, and devices for wireless communications are described. The techniques described herein relate to a frequency division multiplexing (FDM) of a demodulation reference signal (DMRS). A user equipment (UE) receives control signaling including a configuration for an uplink control message. The UE generates the uplink control message in accordance with the configuration and a first uplink control message format from multiple formats. The uplink control message includes a DMRS that is FDM with uplink control information (UCI). The first uplink control message format is associated with a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform and a quantity of four or more OFDM symbols. The UE transmits the uplink control message using the DFT-s-OFDM waveform.

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device (e.g., a network entity) may obtain, from multiple second wireless devices (e.g., user equipments (UEs)), multiple message segments via multiple slots. The first wireless device may assign each obtained message segment to a respective channel estimate cluster of multiple channel estimate clusters. A first set of the multiple message segments may be associated with a first channel estimate cluster, and may collectively form a first message. The first message may be associated with a second wireless device of the multiple second wireless devices. The first wireless device may decode the first message. In some examples, the first wireless device may decode a second message associated with a second channel estimate cluster of a second set of multiple message segments.

Abstract: Disclosed are techniques for wireless sensing. In an aspect, a network node detects a collision between at least one wireless communication signal scheduled to be transmitted by the network node and two or more bundled radar reference signals scheduled to be transmitted by the network node, wherein the at least one wireless communication signal is scheduled to be transmitted during a gap between a first radar reference signal and a second radar reference signal of the two or more bundled radar reference signals; performs a collision avoidance operation based on detection of the collision, and transmits the two or more bundled radar reference signals.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may first delay value associated with a small delay cyclic delay diversity (CDD) scheme for a broadcast channel. In some examples, the first delay value may be selected from a set of candidate delay values based on a frequency band associated with the broadcast channel. The UE may perform channel estimation for the broadcast channel in accordance with one or more delay spread values associated with a multi-path profile of the broadcast channel, where the one or more delay spread values are based at least in part on the first delay value associated with the small delay CDD scheme. The UE may receive a message via the broadcast channel based at least in part on performing the channel estimation.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive (e.g., from a network entity) a control message indicating a configuration for reporting channel state feedback (CSF) for a control channel region. The configuration may indicate the control channel region and one or more resources for the UE to use to transmit a report indicating the CSF. The UE may monitor the control channel region for control channel transmissions. Based on the monitoring, the UE may transmit the report indicating the CSF via the one or more resources and according to the configuration. In some cases, the UE may perform channel measurements on the control channel region to obtain the CSF. The report may indicate a candidate aggregation level or a signal-to-interference-plus-noise ratio (SINR). The UE may receive subsequent control channel transmissions via the control channel region based on the report.

Abstract: Methods, systems, and devices for wireless communications are described. A receiving device may receive a grant scheduling a transmission to the receiving device across a set of layers, the grant indicating a combined modulation order associated with the transmission. The receiving device may receive the transmission via the set of layers and according to the combined modulation order, the combined modulation order based on at least two modulation orders used for at least two corresponding layers in the set of layers, wherein the at least two modulation orders are within a threshold level of each other. The receiving device may decode the transmission according to the combined modulation order.

Abstract: Certain aspects of the present disclosure provide a method for wireless communications at a user equipment (UE). The UE may receive configuration information indicating that each symbol is precoded with at least one precoding matrix. The at least one precoding matrix is based on at least one beam and at least one co-phasing parameter associated with the at least one beam. The precoded symbol is mapped to different resources associated with demodulation reference signal (DMRS) ports associated with an antenna array in a cycling set. The UE may receive multiple DMRSs from multiple resources, in accordance with the configuration information.

Abstract: The apparatus may be a wireless device configured to detect a first trigger condition at the wireless device and transmit, for a network device, a first indication to switch from a first mode of operation associated with a first data bandwidth and a first reference signal bandwidth to a second mode of operation associated with a second data bandwidth and a second reference signal bandwidth, where at least one of the second data bandwidth is smaller than the first data bandwidth and the second reference signal bandwidth is larger than the second data bandwidth, the first data bandwidth is smaller than the first reference signal bandwidth and the second data bandwidth is smaller than the second reference signal bandwidth, or the first data bandwidth is smaller than the second data bandwidth and the first reference signal bandwidth that is larger than the first data bandwidth.

Abstract: Methods, systems, and devices for wireless communication are described. A wireless communication device may receive control signaling that indicates a change in one or more radio frequency thresholds for wireless signaling. The wireless communication device may perform, as part of an in-band clipping procedure, noise repetition and noise shaping to reduce a peak-to-average power ratio (PAPR) associated with the wireless signaling. The noise repetition and the noise shaping may include generating a set of values with one or more first values and one or more second values. The one or more first values may be associated with an error margin between a sample of a wireless communication signal and a clipping threshold. The one or more second values may be inversions of the one or more first values. The wireless communication device may apply the set of values to the wireless communication signal to reduce PAPR.

Abstract: A thermally insulating multilayer sheet includes a compressible layer, and a thermal insulation layer, a flame retardant layer, or a combination thereof disposed on the compressible layer.

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for avoiding collisions between hybrid automatic repeat request (HARQ) feedback transmissions and between HARQ feedback transmissions and other transmissions. In one example, a base station may configure resources for HARQ feedback transmissions such that the resources are exclusive of each other to avoid collisions between HARQ feedback transmissions. In another example, a base station may indicate resources for a user equipment (UE) to use for HARQ feedback transmissions such that the resources are exclusive of each other to avoid collisions between HARQ feedback transmissions. In yet another example, if a HARQ feedback transmission and another transmission are scheduled on overlapping resources, a UE may be configured to multiplex bits of the HARQ feedback transmission and the other transmission or drop the other transmission.