US 11,949,543 B1
Peak to average power ratio reduction by adding constraints on phase transition between modulation symbols
Mohamad Sayed Hassan, Paris (FR); Jun Ma, San Diego, CA (US); Lianghai Ji, San Diego, CA (US); Liangping Ma, San Diego, CA (US); Huilin Xu, Temecula, CA (US); Weimin Duan, San Diego, CA (US); Karthik Anantha Swamy, La Jolla, CA (US); and Qiang Wu, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 22, 2022, as Appl. No. 17/934,427.
Int. Cl. H04L 27/26 (2006.01)
CPC H04L 27/2615 (2013.01) [H04L 27/2636 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication to improve a peak to average power ratio (PAPR) in at least one of a single-carrier frequency division multiplexed (FDM) signal or discrete Fourier transform (DFT) spread orthogonal frequency division multiplexing (OFDM) (DFT-s-OFDM) at a first device, comprising:
memory; and
at least one processor coupled to the memory and, based at least in part on information stored in the memory, the at least one processor is configured to:
encode a set of information bits with a channel encoder;
generate, based on a set of encoded bits from the channel encoder, a set of amplitude symbols using a distribution matching function;
generate a set of modulated symbols based on the set of amplitude symbols, wherein the set of amplitude symbols indicates a set of phases that are used to generate the set of modulated symbols; and
transmit, to a second device, a signal based on the set of modulated symbols.