中文说明：软判决译码相对于硬判决译码性能研究了，当传播的符号都沾上了 AWGN 信道。误帧率 （FER） 减小对数，减少中的帧数错误，和它是明显的软判决译码 （SDD） 表现优于硬判决译码 （HDD），因为后者产生比前者更高的抚恤金。该代码是应用程序的维特比译码。
English Description：
The performance of soft-decision decoding relative to hard-decision decoding has been studied, when the transmitted symbols are contaminated with AWGN over the channel. the Frame error rates (FER) decreases logarithmically, due to reduced number of frames inerrors, and it is apparent that soft-decision decoding (SDD) outperformed hard-decision decoding (HDD) because the later produces higher FERs than the former. The code is an application viterbi decoding.