按照要求对“数字基带信号HDB3译码器设计与建模”进行逻辑分析，了解HDB3译码器译码原理，了解各模块电路的逻辑功能，设计通信系统框图，画出实现电路原理图，编写VHDL语言程序，上机调试、仿真，记录实验结果波形，对实验结果进行分析。(In accordance with the requirements of the logical analysis of the design and modeling of the digital baseband signal HDB3 decoder, HDB3 decoder principle, understand the logic function of each module circuit diagram, communication system design, draw the circuit principle diagram, VHDL language program, debugging, simulation, experimental results recorded waveform, the analysis of experimental results.)