US 12,438,751 B2
Demodulation reference signal sequence signaling for single carrier waveforms with a nonlinear power amplify in higher bands
Morteza Soltani, San Diego, CA (US); Jun Ma, San Diego, CA (US); Xiaoxia Zhang, San Diego, CA (US); Jing Sun, San Diego, CA (US); Raviteja Patchava, San Diego, CA (US); Zhifei Fan, San Diego, CA (US); and Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 21, 2022, as Appl. No. 17/934,106.
Prior Publication US 2024/0097944 A1, Mar. 21, 2024
Int. Cl. H04L 25/02 (2006.01); H04L 5/00 (2006.01)
CPC H04L 25/0228 (2013.01) [H04L 5/0051 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication 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:
transmit an indication of a first demodulation reference signal (DMRS), wherein the first DMRS is based on a non-linearity of a power amplifier of the first device and at least one of a modulation and coding scheme (MCS) used for a data transmission associated with the first DMRS or a channel type of a channel associated with the first DMRS, wherein the nonlinearity of the power amplifier is associated with a power amplification (PA) backoff magnitude based on a peak-to-average power ratio (PAPR) of the data transmission, and wherein the first DMRS is further based on a PAPR of the first DMRS; and
transmit, for a second device, the first DMRS for channel estimation at the second device.