US 12,294,476 B2
Transmit precoding for peak to average power ratio reduction
Noam Zach, Kiryat Ono (IL); Guy Wolf, Rosh Haayin (IL); and Gideon Shlomo Kutz, Ramat Hasharon (IL)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Apr. 12, 2022, as Appl. No. 17/718,950.
Prior Publication US 2023/0327933 A1, Oct. 12, 2023
Int. Cl. H04L 12/00 (2006.01); H04B 7/06 (2006.01); H04L 27/26 (2006.01)
CPC H04L 27/2617 (2013.01) [H04B 7/0617 (2013.01); H04B 7/0639 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A method of wireless communication at a transmitting device, comprising:
constructing a frequency domain (FD) response to a peak to average power ratio (PAPR) reduction precoding;
estimating a channel to one or more receiving devices;
applying the PAPR reduction precoding to the estimated channel;
constructing a multiple input multiple output (MIMO) precoding matrix considering the FD response of the PAPR reduction precoding; and
applying 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).