US 12,137,017 B2
Precoded phase tracking reference signal sequence with distributed allocation
Xiaoxia Zhang, San Diego, CA (US); Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, San Diego, CA (US); Zhifei Fan, San Diego, CA (US); Tianyang Bai, Somerville, NJ (US); Tao Luo, San Diego, CA (US); and Jing Sun, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Apr. 22, 2022, as Appl. No. 17/727,378.
Claims priority of provisional application 63/181,868, filed on Apr. 29, 2021.
Prior Publication US 2022/0368581 A1, Nov. 17, 2022
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01)
CPC H04L 27/2636 (2013.01) [H04L 5/0051 (2013.01); H04L 27/2607 (2013.01); H04L 27/2613 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method for wireless communication, comprising:
receiving a signal that includes a discrete Fourier transform precoded phase tracking reference signal sequence, the discrete Fourier transform precoded phase tracking reference signal sequence comprising a discrete Fourier transform precoded plurality of symbols;
demapping the discrete Fourier transform precoded phase tracking reference signal sequence to a subset of resources of a set of resources, the subset of resources including one or more phase tracking reference signal resource elements;
decoding the discrete Fourier transform precoded phase tracking reference signal by applying a single inverse discrete Fourier transform to the discrete Fourier transform precoded phase tracking reference signal sequence;
estimating a phase error based at least in part on the decoding; and
applying a phase error correction to a plurality of additional symbols associated with the signal based at least in part on the estimated phase error.