Design of Quasi-Cyclic Cycle LDPC Codes over GF(q)

被引：0
|
作者：
Hu, ShuKai [1 ,2 ]
Chen, Chao [1 ]
Sun, Rong [1 ,2 ]
Wang, XinMei [1 ]
机构：
[1] Xidian Univ, State Key Lab ISN, Xian 710071, Peoples R China
[2] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2012年 / E95B卷 / 03期
关键词：
low-density parity-check (LDPC) codes; nonbinary; quasi-cyclic; minimum Hamming distance; fast encoding;
D O I：
10.1587/transcom.E95.B.983
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Quasi-cyclic (QC) low-density parity-check (LDPC) codes have several appealing properties regarding decoding, storage requirements and encoding aspects. In this paper, we focus on the QC LDPC codes over GF(q) whose parity-check matrices have fixed column weight j = 2. By investigating two subgraphs in the Tanner graphs of the corresponding base matrices, we derive two upper bounds on the minimum Hamming distance for this class of codes. In addition, a method is proposed to construct QC LDPC codes over GF(q), which have good Hamming distance distributions. Simulations show that our designed codes have good performance.
引用
收藏
页码：983 / 986
页数：4
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