数字基带通信系统的设计，实现了AMI、HDB3、和CMI码的变换和反变换。包含了PCM编解码的部分。-Digital baseband communication system design, implementation of AMI, HDB3, and CMI code transform and inverse transform. Contains part of the PCM codec.

介绍了通信行业中，最常用的一种编码机制，HDB3编码机制，这种编码机制可以减除通讯过程中的误码几率-Describes the communications industry, the most commonly used coding scheme, HDB3 encoding mechanism, this encoding mechanism can be less chance of errors during communication

双极性矩形随机信号的归一化功率谱密度 HDB3码的编译码（要求给出眼图）-Normalized power spectral density HDB3 code codec bipolar rectangular random signals (required to give the eye)