Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select an antenna for transmitting a New Radio sounding reference signal (SRS) such that antenna resource conflicts with receiving an LTE cell-specific reference signal are minimized based at least in part on an antenna resource configuration. The UE may transmit the SRS on the selected antenna. Numerous other aspects are described.

According to various embodiments, the electronic device may include: a first antenna having a first polarization characteristic, a second antenna a having a second polarization characteristic different from the first polarization characteristic, a switch operatively connected to the first antenna and the second antenna, and a processor operatively connected to the first antenna and the second antenna through the switch. The processor may be configured to identify, based on transmitting at least one packet using the first antenna, at least one timestamp of the packet, control the electronic device to transmit a first area of the packet based on a first timestamp of the identified timestamp using the first antenna, switch the first antenna to the second antenna based on a second timestamp of the identified timestamp, and control the electronic device to transmit a second area of the packet based on the second timestamp of the packet using the second antenna.

The present disclosure relates to wireless communication methods, network devices, and terminal devices. One example method includes receiving, by a terminal device, configuration information sent by a network device, where the configuration information is used to indicate a beam sweeping type, and determining, by the terminal device, the beam sweeping type based on the configuration information.

A radio-frequency circuit includes a first power amplifier that amplifies a first transmission signal and outputs the first transmission signal amplified; and a second power amplifier that amplifies a second transmission signal different in frequency from the first transmission signal, and outputs the second transmission signal amplified. At least one of the first power amplifier or the second power amplifier switches from ET mode to APT mode, when (1) both the first power amplifier and the second power amplifier are outputting amplified transmission signals and (2) output power of at least one of the first power amplifier or the second power amplifier is greater than a first threshold power.

Beamforming communication systems with modular front-ends are provided herein. In certain embodiments, a beamforming communication system includes an antenna array partitioned into a plurality of sub-arrays, and a plurality of front-end modules each operatively associated with one of the sub-arrays. Each of the front-end modules includes at least two radio frequency (RF) transmit channels and at least two RF receive channels. Thus, the signals transmitted and received on the antenna array are processed using a multiple front-end modules servicing sub-arrays.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine to operate in an antenna switch diversity mode to transmit an uplink signal according to an antenna switching pattern, the antenna switching pattern comprising switching between a first transmit chain coupled to a first antenna and a second transmit chain coupled to a second antenna. The UE may transmit at least a first portion of the uplink signal using the first transmit chain coupled to the first antenna, the first transmit chain coupled to the first antenna. The UE may transmit at least a second portion of the uplink signal using the second transmit chain coupled to the second antenna, the second transmit chain coupled to the second antenna.

Apparatus and methods for modulation partition and transmission via multiple antennas for enhanced transmit power capability are provided herein. In certain embodiments, an RF communication system includes a transceiver that generates a first RF signal and a second RF signal corresponding to partitions of a modulated RF signal. For example, the first RF signal and the second RF signal can be associated with different RB allocations of one or more channels of a frequency band. The RF communication system further includes a first transmit chain that processes the first RF signal to generate a first RF output signal for transmission on a first antenna, and a second transmit chain that processes the second RF signal to generate a second RF output signal for transmission on a second antenna.

Provided, according to various embodiments, are a method for performing, by a terminal, communication according to cyclic delay diversity (CDD) using multiple antennas in a wireless communication system and an apparatus therefor. Disclosed are a method for performing communication according to cyclic delay diversity (CDD) and an apparatus therefor, the method comprising the steps of: determining a delay range of a delay value for CDD on the basis of a moving speed of a terminal; determining the delay value of the CDD within a set delay range; and transmitting a cyclically delayed signal to a target terminal, according to the determined delay value, wherein the preset delay range is determined on the basis of the moving speed of the terminal.

A method of wireless communication, by a user equipment (UE) supporting a four transmitter/six receiver (4T6R) antenna configuration, reports a sounding reference signal (SRS) switching capability. The method receives an SRS antenna switching configuration, and performs SRS antenna switching while transmitting multiple SRSs via SRS resources with multiple transmitters for different antenna ports, in accordance with the SRS antenna switching configuration. At least one of the different antenna ports may use at least two of the SRS resources. A quantity of the different antenna ports assigned to each SRS resource may be different for the SRS antenna switching. The UE may sound the different antenna ports an equal number of times, and at least one of the different antenna ports may use at least two of the SRS resources for the SRS antenna switching.

Techniques are described for wireless communication. An orthogonal frequency-division multiple access (OFDMA) configuration of an uplink channel is identified for communications in an unlicensed radio frequency spectrum band. An OFDMA waveform is generated based on the identified OFDMA configuration. The OFDMA waveform is communicated in a signal in the unlicensed radio frequency spectrum band. A virtual cell identifier of a first base station may be associated with transmissions between the first base station and a first user equipment (UE). A set of common resource blocks may be identified for transmission of a demodulation reference signal (DM-RS) between the first base station and the first UE. A configuration of an uplink channel may be dynamically selected for uplink communications in an unlicensed radio frequency spectrum band. A waveform may be generated based on the selected configuration. The waveform may be communicated in a signal in the unlicensed radio frequency spectrum band.