Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect, using an image sensor, an optical beacon of a network node. The UE may receive reference signals using a sweep of a plurality of beams that is based at least in part on a relative direction of the optical beacon of the network node. Numerous other aspects are provided.

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 capability to receive multiple reference signals via multiple beams using frequency division multiplexing during a single reference signal burst. The UE may receive the multiple reference signals during the single reference signal burst using frequency division multiplexing. Numerous other aspects are provided.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network entity may transmit a signal generated using a mixer, wherein the signal is subject to local oscillator (LO) leakage in connection with the generation using the mixer. The network entity may transmit an LO leakage estimate indicator based at least in part on the LO leakage of the signal in connection with the generation using the mixer. Numerous other aspects are described.

Abstract: Some techniques and apparatuses described herein provide radio frequency (RF) beamforming using a cylindrical lens and interleaved receive and transmit antenna arrays. In one example, an apparatus for wireless communication may include a cylindrical lens having a first surface and a curved second surface opposite to the first surface. In some cases, the cylindrical lens may include a power direction corresponding to a curvature of the curved second surface and a non-power direction that is orthogonal to the power direction. In some aspects, the apparatus can include at least one receive antenna array disposed proximate to the first surface of the cylindrical lens that has a plurality of receive antenna array elements. In some examples, the apparatus can include at least one transmit antenna array disposed proximate to the first surface of the cylindrical lens that has a plurality of transmit antenna array elements.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for lens design for full-duplex communication. In some aspects, a device may use a lens design that enables full-duplex operation through a lens by facilitating an avoidance or mitigation of self-interference during full-duplex operation. The lens may have a first, antenna-facing surface and a second, outward-facing surface and, to avoid or mitigate self-interference due to reflection off the lens, the first surface may have a first curvature associated with a relatively small radius. In such examples, the device may transmit wireless signaling from a transmitting element and a reflection off the lens may be dispersed or otherwise oriented away from a receiving element in accordance with a design of the first curvature. In some implementations, the lens may include an anti-reflective coating to further reduce reflection off the lens.

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: Apparatus, methods, and computer program products for communications based on DFT-s-OFDM are provided. An example method may include transmitting a capability indication associated with a support for multiple DFT-s-OFDM to a network entity. The example method may further include receiving an activation associated with the multiple DFT or the multiple IDFT from the network entity, the activation indicating two or more bandwidth parts (BWPs). The example method may further include transmitting or receiving a DFT-s-OFDM waveform associated with the multiple DFT or the multiple IDFT in the two or more BWPs with a dedicated DFT or a dedicated IDFT for each BWP of the two or more BWPs.

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: Methods, systems, and devices for wireless communications are described. A communications device may transmit a first signal. The first signal may be transmitted from a first antenna array of the communications device through a lens of the communications device in a direction. An energy of a portion of the first signal may be below a threshold based on a position of a second antenna array of the communications device. The portion of the first signal may correspond to a portion of a reflection of the first signal that overlaps with the position of the second antenna array. The communications device may concurrently receive, at the second antenna array, a second signal originating from another direction, where the second signal may be focused in the direction of the second antenna array based on the lens.

Abstract: Some techniques and apparatuses described herein provide radio frequency (RF) beamforming using a cylindrical lens for implementing phased array beamforming in one direction and lensed beamforming in a second direction. In one example, an apparatus for wireless communication may include a cylindrical lens having a first surface and a second surface opposite to the first surface. In some cases, the cylindrical lens may include a power direction that corresponds to a curvature of the first surface and a non-power direction that is orthogonal to the power direction. In some aspects, the apparatus can include a plurality of linear antenna arrays disposed proximate to the second surface of the cylindrical lens, wherein each linear antenna array of the plurality of linear antenna arrays includes a plurality of antenna array elements.

Abstract: Some techniques and apparatuses described herein provide radio frequency (RF) beamforming using a cylindrical lens and interleaved receive and transmit antenna arrays. In one example, an apparatus for wireless communication may include a cylindrical lens having a first surface and a curved second surface opposite to the first surface. In some cases, the cylindrical lens may include a power direction corresponding to a curvature of the curved second surface and a non-power direction that is orthogonal to the power direction. In some aspects, the apparatus can include at least one receive antenna array disposed proximate to the first surface of the cylindrical lens that has a plurality of receive antenna array elements. In some examples, the apparatus can include at least one transmit antenna array disposed proximate to the first surface of the cylindrical lens that has a plurality of transmit antenna array elements.

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for measurement and reporting techniques based on zero power slots. A UE may receive an allocation of one or more ZP slots from a network entity. The one or more ZP slots may correspond to one or more transmission gaps associated with the network entity. The UE may detect noise energy in the one or more ZP slots corresponding to the one or more transmission gaps associated with the network entity and measure the noise energy detected in the one or more ZP slots. The measured noise energy in the one or more ZP slots may correspond to a frequency dependence of an Rx signal at the UE.

Abstract: This disclosure provides methods, devices and systems for pre-compensation of downlink communication based on a transmission of a request for the pre-compensation from a user equipment (UE). For example, the UE may determine an impairment at the UE that has a greater severity (a greater impact on downlink communication) or is associated with a greater amount of resources for processing relative to a remainder of a set of impairments that is experienced at the UE and the UE may transmit a request for pre-compensation of the impairment by a base station. The base station may transmit feedback to the UE indicating a confirmation of pre-compensation for the impairment by the base station or to deferment of compensation for the impairment back to the UE. If the base station acknowledges pre-compensation for the impairment, the base station may pre-compensate a downlink transmission to the UE for the impairment.

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may encode a set of data bits on a set of subcarriers based on a boosting factor, and map the set of encoded data bits to a resource block including a first subset of subcarriers corresponding to the set of encoded data bits and a second subset of subcarriers corresponding to a set of null bits. The transmitting device may generate and transmit a signal including the set of encoded data bits. A receiving device may receive a modulated signal on a set of subcarriers, and de-map the modulated signal to a first subset of subcarriers and a second subset of subcarriers based on a boosting factor. The receiving device may decode the first subset of subcarriers to a first set of data bits and the second subset of subcarriers to a second set of data bits.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine one or more demodulation reference signal (DMRS) scrambling sequences using a low peak-to-average power ratio (PAPR) sequence generator, each corresponding to a respective port of one or more ports, the one or more ports being associated with a downlink multiple input multiple output (MIMO) communication, wherein the downlink MIMO communication is a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM)-based communication. The UE may receive the downlink MIMO communication including a DMRS according to an intra-slot DMRS pattern that indicates one or more time domain multiplexed symbols, each being at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences. 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 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: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may measure a received power of one or more reference signals, such as channel state information (CSI) reference signals (CSI-RSs) or synchronization signal blocks (SSBs), transmitted by a base station for a beam management procedure. The UE may determine a set of channel statistics associated with a channel used by the base station to transmit the one or more reference signals based on performing the beam management procedure. The UE may transmit a report to the base station, the report including at least an indication of the received of the one or more reference signals and the set of channel statistics. The base station may select a beam or a channel for communication with the UE based on at least the indication of the received power and the set of channel statistics.

Abstract: Aspects of disclosure relate to a UE reporting to a gNB time delays and phases of pilot signals received via multiple transmission paths in order for the gNB to pre-equalize a future transmission to the UE. The UE determines a first time delay for receiving a first pilot signal from a gNB via a first path, determines a second time delay for receiving a second pilot signal from the gNB via a second path, and generates a report based on the first time delay and the second time delay. The UE then sends the report to the gNB and receives a multi-TRP signal from the gNB via the first path and the second path, wherein the multi-TRP signal is pre-equalized for transmission based on the report to at least have a same time delay as a shorter one of the first time delay or the second time delay.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a first beam, of a set of beams configured for spatial division multiplexing (SDM), for reception of a downlink control information (DCI) message associated with a second beam of the set of beams. The UE may receive, via the first beam, the DCI message associated with the second beam. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit a request, for an uplink transmission or a downlink transmission, for data aided phase tracking reference signals (PT-RSs) on multiple layers of a communication link; and communicate the uplink transmission or the downlink transmission based at least in part on the request. Numerous other aspects are provided.