| 基于原模图的AR4JA码的优化设计 |
| |
| 引用本文： | 章谦骅,包建荣. 基于原模图的AR4JA码的优化设计[J]. 杭州电子科技大学学报, 2014, 0(1): 13-16 |
| |
| 作者姓名： | 章谦骅 包建荣 |
| |
| 作者单位： | 杭州电子科技大学通信工程学院,浙江杭州310018 |
| |
| 基金项目： | 基金项目：国家自然科学基金资助项目（61001133,61102066）,中国博士后科学基金资助项目（2011M500999） |
| |
| 摘 要： | LDPC码具有接近香农极限的性能和适中的编译码复杂度,在深空通信中具有较大应用前景。该文介绍了空间数据系统咨询委员会标准推荐的累积重复累积码,根据码字的原模图对ARA码进行了设计和分析。经过改进得到AR4JA码性能良好,具有系列性,采用并行结构解码,编解码复杂度较低。相关的仿真结果表明,采用该文所提出的改进原模图构造方法,在4/5码率,3.7 dB信噪比下,可以获得接近10-6的误码性能。
|
| 关 键 词： | 低密度奇偶校验码 累积重复累积码 原模图 |
Design and Optimization of Improved AR4JA Codes Based on Protograph |
| |
| Zhang Qianhua,Bao Jianrong. Design and Optimization of Improved AR4JA Codes Based on Protograph[J]. Journal of Hangzhou Dianzi University, 2014, 0(1): 13-16 |
| |
| Authors: | Zhang Qianhua Bao Jianrong |
| |
| Affiliation: | Zhang Qianhua, Bao Jianrong |
| |
| Abstract: | Low density parity check （ LDPC ） codes has good performance close to the Shannon limit with moderate codec complexity , which endows it with large application prospects in deep space communications . The accumulate repeat accumulate （ ARA ） codes which can be described by protograth is recommended by CCSDS for application in deep space telemetry channel coding , is introduced.The AR4JA codes perform well under iterative decoding and feature a simple encoder structure and a fast decoder structure .Simulation results show that, adopt the proposed improvements protograph construction method , in 4/5 rate, 3.7 dB SNR, BER get close to 10 -6 . |
| |
| Keywords: | low density parity check codes accumulate repeat accumulate codes protograph |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
