US 12,457,145 B2
Communicating nonuniform sources using systematic codes
Wei Yang, San Diego, CA (US); Mahmoud Taherzadeh Boroujeni, San Diego, CA (US); Pinar Sen, San Diego, CA (US); Amira Alloum, Boulogne Billancourt (FR); and Jing Jiang, San Diego, CA (US)
Assigned to Qualcomm Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Mar. 28, 2024, as Appl. No. 18/620,869.
Prior Publication US 2025/0310172 A1, Oct. 2, 2025
Int. Cl. H04L 27/34 (2006.01)
CPC H04L 27/3483 (2013.01) [H04L 27/3477 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A transmitter, comprising:
one or more memories storing processor-executable code; and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the transmitter to:
generate a plurality of systematic bits for a message, wherein the plurality of systematic bits are nonuniformly distributed over a time period such that a first bit value has a first probability of occurrence during the time period and a second bit value has a second probability of occurrence during the time period that is greater than the first probability of the occurrence;
modulate the plurality of systematic bits according to an asymmetric modulation rule such that the first bit value corresponds to a first constellation point on a constellation graph and the second bit value corresponds to a second constellation point on the constellation graph that is relatively closer to a center of the constellation graph than the first constellation point based at least in part on the second probability being greater than the first probability; and
transmit the message comprising the plurality of systematic bits modulated according to the asymmetric modulation rule.