卷积码的线性系统理论研究

Research on Linear System Theory of Convolutional Code

本文从卷积码的线性离散时不变系统模型入手,研究了卷积码的代数结构,建立了卷积码的系统状态变量方程描述,并对一般意义上的卷积码提出了比较有效的迭代译码算法。这种译码算法不依赖于信道的统计特性,在误码率较低时具有良好的译码性能。

In this paper,beginning from the model of linear discrete timeinvariable system for convolutional code,the algebraic structure of convolutional code is examined and the system′s statevariable equation representation is founded.Also,it presents an efficient iterative algorithm for general convolutional codes.The iterative algorithm does not rely on the statistical property of channel and has perfect performance when the bit error rate(BER) is lower.