Viterbi Algorithm plays a very important role in our industry. In this lab, we are required to realized the MSK’s VA algorithm and show the SNR vs. BER curve.(注意是基带中的仿真程序，基带系统更加适合用来研究无线通信系统)
verilog程序，实现了（2，1，4）卷积码编码，和基于回溯算法的维特比译码器-verilog program to achieve the (2,1,4) convolutional code encoding, and algorithm based on the back of the Viterbi decoder
