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。
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.
出处
《飞行器测控学报》
2006年第2期59-62,共4页
Journal of Spacecraft TT&C Technology
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
Deep Space Communication
GF(q)
Low-density Parity-check (LDPC) Codes
Cooperative Optimization Algorithm
Message Transfer Algorithm