US 11,791,953 B2
Non-orthogonal multiple access
Steve Shattil, Cheyenne, WY (US)
Assigned to Tybalt, LLC, Boulder, CO (US)
Filed by Genghiscomm Holdings, LLC, Boulder, CO (US)
Filed on Sep. 6, 2021, as Appl. No. 17/467,375.
Application 17/467,375 is a continuation of application No. 16/881,810, filed on May 22, 2020, granted, now 11,115,160, issued on Sep. 7, 2021.
Claims priority of provisional application 62/853,051, filed on May 26, 2019.
Prior Publication US 2021/0399849 A1, Dec. 23, 2021
Int. Cl. H04J 99/00 (2009.01); H04L 5/00 (2006.01)
CPC H04L 5/0005 (2013.01) [H04J 99/00 (2022.08)] 21 Claims
OG exemplary drawing
 
1. A method for wireless communication, comprising:
receiving a multi-layer non-orthogonal multiple access (NOMA) communication, each layer in the multi-layer NOMA communication comprising a circular-shifted pulse waveform modulated with the each layer's direct-sequence code,
wherein the each layer's direct-sequence code filters spectral content of the circular-shifted pulse waveform to produce a NOMA sparsity pattern characterized by a set of active subcarriers that is unique to the each layer;
transforming the multi-layer NOMA communication into a plurality of subcarrier-frequency values; and
performing joint detection of data encoded in the plurality of subcarrier-frequency values, comprising identifying, in the plurality of subcarrier-frequency values, the each layer's NOMA sparsity pattern produced by the each layer's direct-sequence code.