卷积码译码霍夫曼编码及数学概率论贝叶斯公式； 卷积译码软判决通过3位量化可以比硬判决提高约2dB信噪比； 了解最大似然译码准则； -Soft Decoding Scheme of Convolution Codes Combined with Huffman Coding.Simulation study of the performance of ternary line codes under Viterbi decoding & Soft-decision decoding