US 11,843,495 B2
Guard interval based waveform
Xiaoxia Zhang, San Diego, CA (US); Jing Sun, San Diego, CA (US); Jun Ma, San Diego, CA (US); Raviteja Patchava, San Diego, CA (US); Morteza Soltani, San Diego, CA (US); Tao Luo, San Diego, CA (US); Iyab Issam Sakhnini, San Diego, CA (US); and Hemant Saggar, Irvine, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 16, 2021, as Appl. No. 17/445,124.
Prior Publication US 2023/0051510 A1, Feb. 16, 2023
Int. Cl. H04L 27/26 (2006.01)
CPC H04L 27/2636 (2013.01) [H04L 27/261 (2013.01); H04L 27/2607 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
generate a discrete Fourier transform (DFT) waveform from separate DFT inputs of data content, a guard interval (GI) sequence, and tail suppression samples, the tail suppression samples being selected to have a negative value that is based at least in part on a product of an inverse of a second tail matrix component, a first tail matrix component, and a value of the data content;
generate a first communication with the DFT waveform using an inverse fast Fourier transform (IFFT) operation, wherein the first communication includes, in a time domain, a data signal corresponding to the data content and a GI-based tail signal that corresponds to the GI sequence and that is suppressed with a tail suppression signal based at least in part on the tail suppression samples; and
transmit the first communication.