	US 11,870,627 B2
	Guard interval-based waveform with data part and tail part
Xiaoxia Zhang, San Diego, CA (US); Raviteja Patchava, San Diego, CA (US); Morteza Soltani, San Diego, CA (US); Jun Ma, San Diego, CA (US); Jing Sun, San Diego, CA (US); Peter Gaal, San Diego, CA (US); and Iyab Issam Sakhnini, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 18, 2021, as Appl. No. 17/405,596.
Prior Publication US 2023/0053650 A1, Feb. 23, 2023
Int. Cl. H04L 27/26 (2006.01); H04W 28/26 (2009.01); H04W 72/0446 (2023.01); H04W 72/1263 (2023.01)

CPC H04L 27/2607 (2013.01) [H04L 27/2636 (2013.01); H04W 28/26 (2013.01); H04W 72/0446 (2013.01); H04W 72/1263 (2013.01)]

30 Claims

1. A method of operating a wireless device, comprising:

obtaining data for transmission in a guard interval (GI)-based waveform with a data part and a tail part;

obtaining a unique word (UW) sequence for the tail part;

obtaining a suppression signal with filter coefficients configured to suppress leakage from the data part to the tail part;

mapping the data, the UW sequence, and the suppression signal to a set of reserved time-domain resources based on a time-domain resource mapping and reservation rule to produce Discrete Fourier Transform (DFT) input data;

performing DFT processing on the DFT input data to produce Inverse Fast Fourier Transform (IFFT) input data;

performing IFFT processing on the IFFT input data to produce the GI-based waveform with the data part and the tail part; and

transmitting the GI-based waveform.