中文说明：319卷积码的编译码程序，通过修改G的系数可以修改编码器，同时包含维特比译码以及性能的对比图 convencoder.m 为主函数，三次分别使用直接判决，维特比硬判决和维特比软判决三种译码方式
English Description：
319 convolutional code encoding and decoding program, by modifying the coefficient of G can modify the encoder, including Viterbi decoding and performance comparison chart, convencoder. M main function, three times respectively using direct decision, Viterbi hard decision and Viterbi soft decision three decoding methods