【摘要】 本文利用线性时不变系统中常用分析方法对卷积码的构造、编码和译码过程进行了研究,提出了一种由零状态、零输入响应法和改进维特比法相结合的译卷积码方法。仿真实验结果表明,这种方法具有算法简单、节省机时和少占内存等优点。本文最后证明这种方法是一种准最大似然译码法。更多还原

【Abstract】 In this paper, the ordinary analysis method of linear-time invariant systemhas been used in the process of the construction, encoding and decoding ofconvolutional codes. A new method which was the combination of Viterbi-Algorithm and Zero states-Zero inputs analysis method has been proposed. Theresultes of simulation have showed that this method has some advantages insimple-algorithm, little CPU time and little-memory, At the end of this paper,the proof about this new method, a maxi-likelihood decoding method, has beenpresented.更多还原