US 12,463,854 B2
Single-carrier frequency-division multiplexing (SC-FDM) for wireless local area networks (WLANs)
Lin Yang, San Diego, CA (US); Bin Tian, San Diego, CA (US); Youhan Kim, Saratoga, CA (US); and Jialing Li Chen, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jun. 17, 2022, as Appl. No. 17/843,747.
Prior Publication US 2023/0412325 A1, Dec. 21, 2023
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01)
CPC H04L 27/2602 (2013.01) [H04L 5/0007 (2013.01); H04L 5/0098 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for wireless communication performed by a wireless communication device, comprising:
mapping a data portion associated with a physical layer protocol data unit (PPDU) to a set of M time-domain symbols;
transforming a set of Q time-domain symbols, that includes the set of M time-domain symbols, into a set of Q frequency-domain samples in accordance with a Q-point discrete Fourier transform (DFT), the set of Q time-domain symbols further including one or more pilot symbols;
modulating a set of N orthogonal subcarriers with the set of Q frequency-domain samples, where N>Q;
transforming the N modulated subcarriers into a set of N time-domain samples in accordance with an N-point inverse fast Fourier transform (IFFT);
prepending, to the set of N time-domain samples, a cyclic prefix that includes the one or more pilot symbols; and
transmitting the set of N time-domain samples over a wireless channel.