| GF(q)域上的低密度校验(LDPC)码的译码及其在深空通信中的应用 |
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| 引用本文： | 黄晓非 丁溯泉 杨知行 吴佑寿. GF(q)域上的低密度校验(LDPC)码的译码及其在深空通信中的应用[J]. 飞行器测控学报, 2006, 25(2): 59-62 |
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| 作者姓名： | 黄晓非 丁溯泉 杨知行 吴佑寿 |
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| 作者单位： | 清华大学信息技术研究院,北京,100084;清华大学电子工程系,北京,100084;北京跟踪与通信技术研究所,北京,100094;清华大学电子工程系,北京,100084 |
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| 摘 要： | 低密度校验码是一类能有效逼近香农限的好码,而高进制的LDPC码具有比二进制LDPC码更好的性能,但其译码复杂度太高不利于工程应用。本文提出了一种基于协同优化算法的低复杂度的高进制LDPC码的译码算法,并讨论了其在深空通信中的应用。
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| 关 键 词： | 深空通信 GF(q)域 低密度校验(LDPC)码 协同优化算法 消息传递算法 |
| 收稿时间： | 2005-11-23 |
Decoding of Low-density Parity-check(LDPC) Codes over GF(q) and Their Applications in Deep Space Communication |
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| HUANG Xiao-fei DING Su-quan. Decoding of Low-density Parity-check(LDPC) Codes over GF(q) and Their Applications in Deep Space Communication[J]. Journal of Spacecraft TT&C Technology, 2006, 25(2): 59-62 |
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| Authors: | HUANG Xiao-fei DING Su-quan |
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| Affiliation: | 1. Institute of Information Technology, Tsinghua University, Beijing 100084; 2. Department of Electronic Engineering, Tsinghua University, Beijing 100084; 3. Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094 |
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| Abstract: | Low-density parity-check(LDPC) codes are a class of codes which can approach Shannon limit effectively while LDPC codes over GF(q) offer better performance than binary LDPC codes.However,the high level decoding complexity of LDPC codes over GF(q) is a barrier to engineering applications.This paper proposes a low complexity decoding algorithm for LDPC over GF(q) based on cooperative optimization and discusses its applications in deep space communication. |
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| Keywords: | Deep Space Communication GF(q) Low-density Parity-check(LDPC) Codes Cooperative Optimization Algorithm Message Transfer Algorithm |
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