6、Ⅱ开发环境中,采用VHDL语言设计对每个模块进行仿真,实现相应功能再进行整体仿真。关键字:数字基带传输HDB3码译码VHDL语言27武汉理工大学《通信原理》课程设计说明书Abstract In the digital baseband signal transmission, HDB3 code (the third order high density bipolar codes) is one of the commonly used transmission type. This design aiming
7、 at the characteristics of HDB3 code in digital baseband transmission system, the encoder is divided into three parts: V module, interpolation module B, single polarity dual polarity change module to realize the HBD3 code output. In the process of coding, the
8、 main shift register and the counter is used to realize the whole process of plug V plug B, and the introduction of the bipolar codes for accurate identification of "V", "B", "+ 1", "V",