US 12,323,277 B2
Combined lattice reduction and per-stream recursive demapping demodulation
Jacob Pick, Mevaseret Zion (IL); Shay Landis, Hod Hasharon (IL); Peer Berger, Hod Hasharon (IL); and Tomer Geva, Kiryat Ono (IL)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on May 16, 2023, as Appl. No. 18/318,676.
Prior Publication US 2024/0388476 A1, Nov. 21, 2024
Int. Cl. H04L 25/03 (2006.01); H04L 1/06 (2006.01); H04L 25/06 (2006.01)
CPC H04L 25/03178 (2013.01) [H04L 1/06 (2013.01); H04L 25/067 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a first wireless device, comprising:
at least one memory; and
at least one processor coupled to the at least one memory and, based at least in part on stored information that is stored in the at least one memory, the at least one processor is configured to cause the apparatus to:
receive a communication from a second wireless device, wherein the communication comprises a set of stream signals; and
demodulate the communication based on a combination of lattice reduction (LR) and per-stream recursive demapping (PSRD), wherein to demodulate the communication based on the LR and the PSRD, the at least one processor is configured to cause the apparatus to;
transform a first subset of received stream signals in the set of stream signals to a complex integer domain (Z domain);
process, based on the LR, the first subset of received stream signals in the set of stream signals in the Z domain; and
transform the processed first subset of received stream signals in the set of stream signals in the Z domain to a set of X domain vectors in an X domain, each X domain vector in the set of X domain vectors corresponds to one or more received stream signals in the first subset of received stream signals.