Layered Construction of Quasi-Cyclic LDPC Codes

被引：3
|
作者：
Tao, Xiongfei [1 ]
Xin, Yue [1 ]
Wang, Bifang [2 ]
Chang, Li [3 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China
[2] Wuhan Polytech Univ, Coll Elect Informat Engn, Wuhan 430074, Peoples R China
[3] Huazhong Univ Sci & Technol, Lib, Wuhan 430074, Peoples R China
来源：
IEEE COMMUNICATIONS LETTERS | 2020年 / 24卷 / 05期
基金：
美国国家科学基金会;
关键词：
Parity check codes; Lattices; Geometry; Indexes; Block codes; Belief propagation; Low-density parity-check (LDPC) codes; layered construction; girth; trapping sets; LOWER BOUNDS;
D O I：
10.1109/LCOMM.2020.2973964
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
A layered construction of LDPC codes on 3-dimensional rectangular lattices is explored in this letter. By analyzing the governing conditions of in-layer polygons and inter-layer polygons, and elaborately selecting the slopes of in-layer and inter-layer lines, we remove all the 6-cycles as well as inter-layer 8-cycles which results in a class of LDPC codes without small trapping sets. We further remove the in-layer 8-cycles to design a class of LDPC codes with girth 10.
引用
收藏
页码：946 / 950
页数：5
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