摘要
介绍了CCSDS标准的删除卷积码的编译码原理,以理论推导出的等效校验矩阵为先验知识,通过构造线性方程组,识别出删除卷积码的删除图案和码头,进而提出了一种删除卷积码的盲解码方法。仿真结果表明,在信噪比大于5dB的加性高斯白噪声信道中,能实现所有CCSDS标准删除卷积码的盲解码。
This paper introduces the CCSDS punctured convolutional codes encoding/decoding principle and deduce its identical parity-check matrix looked as a priori knowledge.And the puncture map and code head are identified by solving the linear system equation.At last,a blind decoding method is developed.The simulation results show that the all kinds of CCSDS punctured convolutional codes can be blind decoded in AWGN channels when its SNR above 5 dB.
出处
《微型机与应用》
2010年第19期55-58,共4页
Microcomputer & Its Applications
基金
国家自然科学基金(60902017)
关键词
CCSDS
删除卷积码
盲解码
CCSDS
punctured convolutional codes
blind decoding
