卷积编码，Viterbi译码：一个普适的有限状态机算法(LSM)。只要有一个LSM，能够受不同输入的触发，在各个状态间跳转，并产生输出，就满足可基本条件，可根据状态机利用Viterbi 来从污染的输出中还原输入

-Convolutional coding, Viterbi decoding: a universal finite state machine algorithm (LSM). As long as there is a LSM, different inputs can be triggered to jump between states, and generates an output, the basic conditions can be met, according to the state machine to use Viterbi reducing the output from the input contaminated