说明：  介绍了卷积码的特点以及卷积码的编码和解码, 讨论了加入交织后的对卷积编码的误码率的改 善情况, 并
(Describes the characteristics of convolutional codes, and convolutional code encoding and decoding, after the discussion by adding cutting the error rate of the convolutional coding to improve the situation and)