US 12,395,211 B1
RB/PRG-level precoder cycling based on virtual DMRS ports
Hyojin Lee, San Diego, CA (US); Jing Jiang, San Diego, CA (US); and Yu Zhang, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Feb. 16, 2024, as Appl. No. 18/444,436.
Int. Cl. H04W 72/23 (2023.01); H04B 7/0456 (2017.01); H04L 5/00 (2006.01); H04W 72/30 (2023.01)
CPC H04B 7/0456 (2013.01) [H04L 5/0048 (2013.01); H04W 72/30 (2023.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a user equipment (UE), comprising:
one or more memories storing computer-executable instructions; and
one or more processors coupled with the one or more memories and configured to execute the computer-executable instructions, individually or in combination, to cause the apparatus to:
receive a transmission having non-transparent precoder cycling applied to each frequency domain resource unit of a frequency domain resource group of K frequency domain resource units in which both a data signal and a demodulation reference signal (DMRS) are precoded with a precoding matrix comprising a number of sub-matrices equal to a number of antenna groups, wherein a first sub-matrix for a first antenna group is the same for each frequency domain resource unit and a phase of each subsequent sub-matrix for each subsequent antenna group is shifted to be orthogonal across the frequency domain resource units of the frequency domain resource group;
estimate a channel of the transmission based on the precoding matrix; and
demodulate the data signal based on the estimated channel.