US RE49,989 E1
Communication techniques involving pairwise orthogonality of adjacent rows in LPDC code
Thomas Joseph Richardson, South Orange, NJ (US); Joseph Binamira Soriaga, San Diego, CA (US); Shrinivas Kudekar, Roswell, GA (US); and Gabi Sarkis, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on May 28, 2021, as Appl. No. 17/334,608.
Application 17/334,608 is a reissue of application No. 16/003,047, filed on Jun. 7, 2018, granted, now 10,312,939, issued on Jun. 4, 2019.
Claims priority of provisional application 62/522,044, filed on Jun. 19, 2017.
Claims priority of provisional application 62/517,916, filed on Jun. 10, 2017.
Int. Cl. H03M 13/00 (2006.01); H03M 13/11 (2006.01); H04L 1/00 (2006.01); H04L 5/00 (2006.01)
CPC H03M 13/1168 (2013.01) [H03M 13/1137 (2013.01); H03M 13/114 (2013.01); H03M 13/1145 (2013.01); H03M 13/116 (2013.01); H03M 13/1185 (2013.01); H03M 13/616 (2013.01); H03M 13/618 (2013.01); H03M 13/6306 (2013.01); H03M 13/6362 (2013.01); H03M 13/6393 (2013.01); H03M 13/6513 (2013.01); H03M 13/6561 (2013.01); H04L 1/0047 (2013.01); H04L 1/0057 (2013.01); H04L 1/0069 (2013.01); H04L 5/0007 (2013.01)] 41 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication, comprising:
a receiver configured to receive a codeword in accordance with a radio technology across a wireless channel via one or more antenna elements situated proximal the receiver; and
at least one processor coupled with a memory and comprising decoder circuitry configured to decode the codeword based on a low density parity check (LDPC) code to produce a set of information bits, wherein:
the LDPC code is stored in the memory and defined by a base matrix having a first number [ plurality ] of columns corresponding to variable nodes of a base graph and a second number [ plurality ] of rows corresponding to check nodes of the base graph, and [ ;
elements in all adjacent rows of a column are orthogonal, ] for each of the first number [ plurality ] of columns, all adjacent rows are orthogonal in a last portion of the second number of [ at least twenty-one ] rows [ starting from a last row of the base matrix; and
each row of the twenty-one rows contains a non-zero element in a first column, of the plurality of columns, with a column index 0, or a non-zero element in a second column, of the plurality of columns, with a column index 1] .