US 12,218,686 B2
Quasi-cyclic LDPC coding and decoding method and apparatus, and LDPC coder and decoder
Liguang Li, Guangdong (CN); Jun Xu, Guangdong (CN); and Jin Xu, Guangdong (CN)
Assigned to ZTE Corporation, Shenzhen (CN)
Filed by ZTE Corporation, Guangdong (CN)
Filed on Apr. 24, 2023, as Appl. No. 18/138,702.
Application 18/138,702 is a continuation of application No. 17/486,652, filed on Sep. 27, 2021, granted, now 11,637,568.
Application 17/486,652 is a continuation of application No. 16/338,333, granted, now 11,133,826, issued on Sep. 28, 2021, previously published as PCT/CN2017/104913, filed on Sep. 30, 2017.
Claims priority of application No. 201610877960.5 (CN), filed on Sep. 30, 2016.
Prior Publication US 2023/0344450 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H03M 13/11 (2006.01); H03M 13/00 (2006.01); H03M 13/03 (2006.01); H04L 1/00 (2006.01)
CPC H03M 13/1168 (2013.01) [H03M 13/036 (2013.01); H03M 13/618 (2013.01); H03M 13/6516 (2013.01); H04L 1/0003 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A quasi-cyclic LDPC decoding method, comprising:
receiving, over a radio transmission link, a data stream or a control stream comprising an encoded information sequence; and
performing low density parity check (LDPC) decoding on the encoded information sequence according to a basic matrix associated with LDPC coding, wherein the LDPC decoding mitigates distortions due to transmission over the radio transmission link and recovers the encoded information sequence,
wherein the basic matrix associated with the LDPC coding is from a mother basic matrix set, wherein the basic matrix comprises a first-type element corresponding to an all-zero square matrix and a second-type element corresponding to a matrix obtained by a cyclic shift of a unit matrix according to a value of the second-type element, wherein the value of the second-type element is based on an extension factor of the LDPC coding, and wherein dimensions of the all-zero square matrix and the unit matrix are equal, and
wherein the mother basic matrix set comprises A4 basic matrix subsets and each basic matrix subset comprises S basic matrices, wherein positions of the second-type element of all of the S basic matrices in a same basic matrix subset are same, and wherein A4 is an integer greater than 1.