Abstract: Methods, systems, and devices for wireless communications are described. Techniques described herein support encoding and transmitting of data carrying reference signals (DCRSs according to a lower modulation order and data according to a higher modulation order. A transmitting device may write data bits and DCRS bits into a bitstream according to an interleaving table (e.g., a systematic bit priority mapping (SBPM) interleaver or table). In some examples, the transmitting device may utilize a sub-constellation of the higher modulation order constellation for transmitting the DCRS bits via DCRS REs. In some examples, the transmitting device may skip (e.g., leave unoccupied) entries in the interleaving table corresponding to the LSBs of a DCRS column. In some examples, the transmitting device may write DCRS bits into the bitstream according to a first interleaving table, and may write data bits into the bitstream according to a second interleaving table.

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for multiple-input multiple-output (MIMO) communications One aspect provides a method for wireless communication. The method includes receiving a signal using a multiple-input multiple-output (MIMO) receiver, wherein the signal includes at least a first code block (CB) including a first part received via a first layer of the MIMO receiver and a second part received via a second layer of the MIMO receiver, wherein the second part of the first CB is shifted within a spectrum by at least two resource positions with respect to the first part of the first CB; performing interference cancellation for the first CB; and decoding the first CB after performing the interference cancellation.

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 is larger than the first data bandwidth.

Abstract: Methods, systems, and devices for wireless communications are described. A network entity may obtain control signaling indicating an inter-cell reference signal configuration for a set of reference signals associated with estimation of a covariance matrix, where the inter-cell reference signal configuration allocates a set of transmission occasions for transmission of the set of reference signals within a first cell and one or more second cells different from the first cell. The set of transmission occasions may be at least partially overlapping in time and frequency. The network entity may output second control signaling that indicates the set of transmission and may communicate, with one or more user equipment (UEs) within the first cell of the network entity and via one or more transmission occasions in accordance with the first control signaling and the second control signaling, one or more reference signals of the for the estimation of the covariance matrix.

Abstract: Methods, systems, and devices for wireless communications are described that provide low density parity check (LDPC) coding techniques using a generated base graph that is generated from an initial base graph. The generated base graph may combine multiple punctured nodes of the initial base graph into a multiple degree node that merges element values of a first node and a second node of the initial base graph matrix, where the first node and the second node are punctured. The generated base graph may combine multiple punctured nodes of the initial base graph into a single node, and add a node to match a rate and code block size associated with the initial base graph.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling that identifies a set of candidate cells associated with a mobility procedure at the UE, where the control signaling indicates a quality metric associated with a first communication link between the UE and the set of candidate cells. The UE may additionally obtain, for one or more candidate cells of the set of candidate cells, a respective first measurement corresponding to the first communication link and a respective second measurement corresponding to a second communication link between the UE and the set of candidate cells. Accordingly, the UE may transmit a mobility report that indicates a subset of candidate cells of the set of candidate cells in accordance with obtaining the control signaling, where the respective first measurement of each candidate cell of the subset of candidate cells satisfies the quality metric.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may generate an encoding matrix including a set of information columns including systematic bits, a first set of core parity columns including a first set of parity bits, and one or more sets of extension parity columns including a second set of parity bits. The UE may puncture one or more of the systematic bits with the first set of parity bits, the second set of parity bits, or a combination thereof, based on an offset value indicating an initial column of the encoding matrix. The UE may encode an initial message in accordance with the encoding matrix based on the offset indicating the initial column of the encoding matrix.

Abstract: Methods, systems, and devices for wireless communications are described for a unified power headroom (PHR) report format that indicates a first quantity of downlink pathloss measurements for a first quantity of configured downlink pathloss reference signals, a second quantity of accumulated closed loop power values for the first quantity of configured power control loops, and an indication of a user equipment (UE) maximum power. The PHR report may be flexibly configured for multiple different pathloss reference signals, and for one or two separate power control loops, and a UE may provide PHR reports in accordance with the configuration.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may transmit, based at least in part on a first transmission, a primary synchronization signal (PSS) burst. The network node may transmit, based at least in part on a second transmission, a secondary synchronization signal (SSS) burst, the second transmission being non-overlapping in a time domain with the first transmission. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device (or apparatus at the device), such as a transmitting device, may communicate scheduling information for an encoded message, including downlink or uplink scheduling information. The wireless device may also transmit or receive an encoded message in accordance with the scheduling information. In some examples, the encoded message may include a set of multiple bits that are generated in accordance with performance of a probabilistic amplitude shaping (PAS) operation for a set of code blocks (CBs) of a transport block (TB). Each CB of the set of CBs may include a quantity of bits that is a multiple of eight bits. In some examples, the quantity of bits of a CB may be associated with a shaping parameter and a floor function. Further, the PAS operation may be performed per CB of the set of CBs.

Abstract: Certain aspects of the present disclosure provide techniques for wireless communications. An example method includes obtaining, from a network entity (NE), a first indication of at least one of a first precoding or a second precoding; and sending, to the NE, a second indication regarding a selected precoding of the first precoding or the second precoding, wherein the selected precoding is based on a precoding gain between the first precoding and the second precoding.

Abstract: Aspects relate to providing over-provisioned cyclic shift configurations for physical random access channel (PRACH) restricted sets. The over-provisioned cyclic shift configuration for a preamble root sequence can include an allowed cyclic shift range including an allowed set of cyclic shifts associated with a cyclic shift step size less than a maximum round trip time (RTT) of a cell and respective restricted cyclic shift ranges adjacent to the allowed cyclic shift range on either side thereof.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may apply a probabilistic amplitude shaping in discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) to a plurality of symbols to obtain a plurality of shaped symbols, wherein the probabilistic amplitude shaping is associated with a probability distribution with a steeper-than-Gaussian decay. The UE may transmit a signal associated with the plurality of shaped symbols. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A network entity may allocate two resource pools for user equipments (UEs) to perform self-scheduled uplink transmission to the network entity. For example, the network entity may allocate a first uplink resource pool for uplink control information (UCI) and a second uplink resource pool for the UE self-scheduled data transmissions (e.g., physical uplink shared channel (PUSCH) communications that carry data). A UE may transmit a UCI message via a resource of the first uplink resource pool that reserves or schedules a resource of the second uplink resource pool for a PUSCH communication. Accordingly, the network entity may perform blind-decoding on the resources of the first resource pool but may refrain from performing blind decoding on the resources of the second resource pool.

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a first device may generate and transmit multiple shaped symbols based on a state for each shaped symbol. To generate each shaped symbol, the first device may normalize the state for each symbol in accordance with a range interval. If the state is outside the range interval, the first device may receive and convert bits from a bit buffer to generate the shaped symbol and normalize the state to be within the range interval. A second device may receive the multiple shaped symbols and generate information bits for each shaped symbol. Once the second device has received all of the shaped symbols of the sequence of shaped symbols, the second device may obtain a deshaped information vector based on the information bits generated for each shaped symbol and a state for a last shaped symbol.

Abstract: Aspects described herein relate to self-scheduled transmissions using a sequence to indicate modulation and coding scheme (MCS) and/or payload size of associated data in the transmission. A resource can be selected from a resource pool configured for transmitting uplink data, and a signal including uplink data, a demodulation reference signal (DMRS) for estimating a channel associated with the uplink data, and a sequence that indicates one or more of the MCS or payload size of the uplink data can be transmitted. Other aspects relate to receiving and processing the self-scheduled transmissions based on the detected sequence.

Abstract: Methods, systems, and devices for wireless communications are described. Various aspects relate to master information block (MIB) payload splitting across multiple sets of physical broadcast channel (PBCH) resources. Some aspects more specifically relate to a transmission of a first portion of a MIB via a first set of PBCH resources and a transmission of a second portion of the MIB via a second set of PBCH resources. In some examples, the first portion of the MIB may be applicable to first user equipment (UEs) that satisfy at least a first capability level and the second portion of the MIB may be applicable to second UEs that satisfy a second capability level greater than the first capability level. For example, the first portion of the MIB may be applicable to reduced and nominal capability UEs and the second portion of the MIB may be applicable to the nominal capability UEs.

Abstract: Certain aspects of the present disclosure provide techniques for sending capability information associated with a plurality of antennas of the user equipment (UE), the capability information including a field that indicates whether each antenna group, of a plurality of antenna groups associated with the plurality of antennas, is coherent, wherein a first antenna group of the plurality of antenna groups is coherent and a second antenna group of the plurality of antenna groups is not coherent; and communicating using the first antenna group and the second antenna group in accordance with the capability information.

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, a user equipment (UE) may transmit an indication of a capability of the UE to support channel estimation for wideband using signaling via a narrowband. The UE may receive a control signal indicating a resource occasion for communication of a frequency modulated continuous waveform (FMCW) signal via a first bandwidth part (BWP) of multiple BWPs. Additionally, the UE may receive, via the resource occasion and the first BWP of the multiple BWPs, the FMCW signal. As such, the UE may transmit a report indicating one or more second BWPs of the multiple BWPs of the wideband based on a channel estimation procedure associated with the multiple BWPs of the wideband, where the channel estimation is based on the FMCW signal.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a first cell, a polar encoded signal including a master information block (MIB) associated with the first cell, the MIB including multiple information bits and a cell barring bit that indicates whether the first cell is available for cell attachment. The polar encoded signal may include a first portion and a second portion. The UE may obtain a value of the cell barring bit based on a comparison between the first portion of the polar encoded signal and the second portion of the polar encoded signal. The UE may decode the polar encoded signal if the cell barring bit indicates that the first cell is available for cell attachment, or may search for another cell if the cell barring bit indicates that the first cell is unavailable for cell attachment.