| 系统RA码的基于WBF策略的改进BP译码算法 |
| |
| 引用本文： | 刘星成,叶远生.系统RA码的基于WBF策略的改进BP译码算法[J].电子学报,2010,38(7):1541-1546. |
| |
| 作者姓名： | 刘星成 叶远生 |
| |
| 作者单位： | 中山大学电子与通信工程系,广东广州,510275 |
| |
| 摘 要： | 针对重复累积(RA)码译码算法(BP算法和最小和算法)复杂度高或纠错性能下降的问题，将加权位翻转WBF的思想用于改进BP算法，提出了基于WBF策略的改进BP译码算法. 在每次迭代译码中若未能译出合法码字，则按一定规则进行位翻转操作，以期获得合法码字. 仿真结果表明，本算法能有效降低系统RA码的运算复杂度，且能保持优异的译码性能.
|
| 关 键 词： | 重复累积码 置信译码算法 运算复杂度 比特差错率(BER)性能 |
| 收稿时间： | 2008-10-9 |
| 修稿时间： | 2010-1-25 |
An Improved BP Decoding Algorithm Based on WBF Scheme for Systematic RA Codes |
| |
| LIU Xing-cheng,YE Yuan-sheng.An Improved BP Decoding Algorithm Based on WBF Scheme for Systematic RA Codes[J].Acta Electronica Sinica,2010,38(7):1541-1546. |
| |
| Authors: | LIU Xing-cheng YE Yuan-sheng |
| |
| Affiliation: | LIU Xing-cheng,YE Yuan-sheng(Department of Electronic and Communications Engineering,Sun Yat-sen University,Guangzhou,Guangdong 510275,China) |
| |
| Abstract: | To mitigate the problems of high computation complexity and deteriorated error correction performance in decoding Repeat-Accumulate(RA) codes with Belief Propagation(BP) and Min-Sum algorithms,the idea of Weighted Bit-Flipping(WBF) is applied to improve the BP algorithm.The improved BP decoding algorithm based on the WBF scheme is proposed for systematic RA codes.If decoding is failure in each iteration,bit flipping measure is to be taken according to specific rules in order to obtain legitimate code words.... |
| |
| Keywords: | repeat-accumulate codes BP decoding algorithm computation complexity bite error rate(BER) performance |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《电子学报》浏览原始摘要信息 |
|
点击此处可从《电子学报》下载全文 |
