Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a wireless device, information indicating an amplitude control capability of the UE. The UE may receive, from the wireless device, a communication using amplitude control. Numerous other aspects are described.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a dynamic grant for an uplink transmission that overlaps with a configured uplink transmission. The UE may transmit the uplink transmission punctured in the configured uplink transmission based at least in part on receiving the dynamic grant. Numerous other aspects are provided.

A terminal according to one aspect of the present disclosure includes a control section that judges, on the basis of whether to support antenna port switching between arbitrary antenna port pairs, correspondence between a bit of transmitted precoding matrix indicator (TPMI) group capability information and a TPMI group, and a transmitting section that transmits, on the basis of the correspondence, the TPMI group capability information corresponding to a TPMI group to support full power transmission. According to one aspect of the present disclosure, it is possible to appropriately control full power transmission.

The present disclosure relates to a 5G or pre-5G communication system to be provided to support a higher data transmission rate after a 4G communication system such as LTE. An embodiment of the present specification relates to beamforming in a mobile communication system and comprises a step for configuring an operation of a limiter circuit for adjusting amplitude of a signal received by a receiver, and receiving the signal according the configuration. According to various embodiments of the present specification, a limiter circuit employed in a receiver supporting beamforming can prevent a reception circuit from being damaged. Further, when reception antenna gain is low or a high signal-to-noise ratio is required, a received signal is not allowed to pass through the limiter circuit so that the received signal can be prevented from deteriorating.

An embodiment of the present invention provides a method for generating a device-to-device (D2D) signal by a terminal in a wireless communication system, the method for generating a D2D signal comprising: a step of mapping, onto one or more resource block (RB) groups, each of one or more modulation symbol groups generated from one or more transmission blocks; and a step for applying different beam vectors to each of the one or more RB groups, wherein the number of beam vectors is determined according to a channel state.

A transmission apparatus that (i) generates a Quadrature Phase Shift Keying (QPSK) modulation signal s1(t) by applying a QPSK modulation scheme to a first data sequence, (ii) generates a 16-Quadrature Amplitude Modulation (QAM) modulation signal s2(t) by applying a 16-QAM modulation scheme to a second data sequence, (iii) generates a transmission signal z1(t) and a second transmission signal z2(t) by applying a phase hopping process, a precoding process, and a power adjust process to the QPSK modulation signal s1(t) and the 16-QAM modulation signal s2(t), wherein an average transmission power of the 16-QAM modulation signal s2(t) being the same as an average transmission power of the QPSK modulation signal s1(t), and (iv) transmits the transmission signal z1(t) from a first antenna at a first time and a first frequency and the second transmission signal z2(t) from a second antenna at the first time and the first frequency.

A method of canceling interference by a signal receiving apparatus in a communication system supporting a multi-user Multiple-Input Multiple-Output (MIMO) scheme and a signal receiving apparatus is provided. The method includes determining whether there is a need for using an interference cancellation scheme while performing a signal detecting operation; and performing the signal detecting operation using the interference cancellation scheme, or performing the signal detecting operation without using the interference cancellation scheme based on determining whether there is the need for using the interference cancellation scheme.

According to some embodiments, a method performed by a wireless device for transmitting on a plurality of antennas comprises signaling, to a network node, a wireless device power transmission capability. The wireless device power transmission capability identifies a power ratio value of a plurality of power ratio values that the wireless device supports for transmission of a physical uplink channel Each value of the plurality of power ratio values corresponds to a transmission power capability and to a number of antenna ports. A power ratio refers to a ratio relative to a maximum power the wireless device is rated to transmit. The method further comprises transmitting a physical uplink channel using the 0 number of antenna ports with a power scaled at least by the power ratio value.

The present disclosure discloses a method, a user equipment and a base station for determining a PMI. The method includes: receiving a reference signal set sent by a base station; based on the reference signal set, selecting a precoding matrix from a codebook, the codebook at least including a non-constant modulus precoding matrix, the non-constant modulus precoding matrix at least including a non-constant modulus column vector, amplitude values of at least two elements of the non-constant modulus column vector forming a symmetrical sequence; and sending a PMI to the base station, the PMI corresponding to the selected precoding matrix. According to the method, the user equipment and the base station for determining PMI, because the non-constant modulus precoding matrix included in the adopted codebook can adjust the shape of a beam, antennas may focus power on a hotspot region, and thus a load balance may be effectively realized.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, an indication of whether the UE is capable of using a virtual port to transmit uplink communications using a maximum transmit power according to a power class of the UE, wherein the virtual port is a combination of two or more antenna ports. The UE may receive, from the base station, a sounding reference signal configuration based at least in part on the indication. Numerous other aspects are provided.