基于PEG算法的多进制PCGC码  

Non-binary PCGC based on PEG algorithm

作　　者：杨翔[1] 王琳[1] 黎勇 

机构地区：[1]重庆邮电大学编码技术研究所,重庆400065 [2]盖尔乐普有限公司,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2008年第2期139-142,200,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：国家自然科学基金项目(60272005);教育部新世纪优秀人才支持计划(NCET-04-0601)

摘　　要：PCGC码是一种以LDPC码作为分量码的新型级联码,它在继承LDPC码优越的误比特率性能的同时,还拥有比LDPC码更低的编码复杂度。研究了多进制PCGC,并将PEG算法引入其分量码的设计构造中。仿真结果表明:短帧情况下,通过合理的设计分量码,四进制PCGC码性能好于四进制LDPC码,且四进制PCGC码性能也略好于二进制的PCGC码。通过合理设计的四进制PCGC码在未来数字通信系统中具有重要的实用价值。Parallel concatenated gallager codes （PCGC） are a new kind of concatenated codes based on component LDPC codes. They show the low complexity of encoding while maintaining a good performance compared to LDPC codes. The performance of non-binary PCGC scenario is studied, and the progressive edge-growth （PEG） algorithm is introduced into the design of component parity check matrix. Simulation results show that non-binary PCGC with proper component design on GF（4） are better than the comparable LDPC codes at the short lengths and PCGC on GF（4） also outperforms PCGC on GF（ 2 ） with analogous complexity. It is shown that non-binary PCGC with proper component design on GF（4） is of practical value in future systems.

关 键 词：多进制PCGC码 PEG算法 傅立叶变换 误码率 

分 类 号：TN911.23[电子电信—通信与信息系统]