Transmit precoding for peak to average power ratio reduction

A method of wireless communication at a receiving device, comprising:

• selecting a peak to average power reduction ratio (PAPR) reduction precoder;
• constructing a frequency domain (FD) response to the PAPR reduction precoder;
• applying the FD response conjugated to a received FD signal from a transmitting device;
• and
• processing at least a received reference signal within the received FD signal based on the PAPR reduction precoder, the received FD signal includes one or more of a data signal, a demodulation reference signal (DMRS), a tracking reference signal (TRS), a channel state information reference signal (CSI-RS), or a cell-specific reference signal (CRS).

A transmitting device, comprising:

• a memory storing computer-executable instructions;
• and
• at least one processor coupled to the memory and configured to execute the computer-executable instructions to:
• construct a frequency domain (FD) response to a peak to average power ratio (PAPR) reduction precoding;
• estimate a channel to one or more receiving devices;
• apply the PAPR reduction precoding to the estimated channel;
• construct a multiple input multiple output (MIMO) precoding matrix considering the FD response of the PAPR reduction precoding;
• and
• apply the MIMO precoding matrix and the PAPR reduction precoding to an FD signal for a transmission, the FD signal includes one or more of a data signal, a demodulation reference signal (DMRS), a tracking reference signal (TRS), a channel state information reference signal (CSI-RS), or a cell-specific reference signal (CRS).

A receiving device, comprising:

• a memory storing computer-executable instructions;
• and
• at least one processor coupled to the memory and configured to execute the computer-executable instructions to:
• select a peak to average power ratio (PAPR) reduction precoder;
• construct a frequency domain (FD) response to the PAPR reduction precoder;
• apply the FD response conjugated to a received FD signal from a transmitting device;
• and
• process at least a received reference signal within the received FD signal based on the PAPR reduction precoder, the received FD signal includes one or more of a data signal, a demodulation reference signal (DMRS), a tracking reference signal (TRS), a channel state information reference signal (CSI-RS), or a cell-specific reference signal (CRS).