Good Encodable Irregular Quasi-Cyclic LDPC Codes

被引：7
|
作者：
Xiao, Yang [1 ]
Kim, Kiseon [2 ]
机构：
[1] Beijing Jiaotong Univ, Inst Informat Sci, Beijing 100044, Peoples R China
[2] Gwangju Inst Sci & Technol, Dept Informat & Commun, Gwangju 500712, South Korea
来源：
2008 11TH IEEE SINGAPORE INTERNATIONAL CONFERENCE ON COMMUNICATION SYSTEMS (ICCS), VOLS 1-3 | 2008年
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
Channel coding; circulant matrices; low-density parity-check codes; encodable quasi-cyclic codes;
D O I：
10.1109/ICCS.2008.4737391
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
The existing encodable irregular LDPC codes may have a degraded BER performance when it is derived from classical regular QC LDPC codes since both girth property and weight property are not carefully given attention to two or more thing, which lead to some codes with large girths have small minimum weights and poor BER performance. To solve the problem, we propose a new approach to construct the encodable irregular QC codes, which can not produce new short girths and can keep the large minimum weight and minimum distance of the codes. The theorems of girth 4 and girth 6 are provided to test the girth variance of the obtained irregular QC codes. Simulations verify the construction of the QC LDPC codes to be valid, since better BER performance than that of existing encodable irregular LDPC codes is obtained.
引用
收藏
页码：1291 / +
页数：2
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