采用层次化和模块化的设计方法，给出了基于VHDL的4ASK调制和解调系统中载波信号产生、振幅调制、振幅判别等功能的实现方案。最后给出了在MAX+PUSSⅡ软件平台上仿真结果和在EPF10K10LC84硬件平台上的测试结果。结果表明所设计的系统是稳定和可靠的。

This paper presented the design and realization ways of 4ASK based on VHDL，which applied hierarchical and modular design and introduced the realization ways of carrier wave generation，amplitude modulation，amplitude discrimination．Finally，the simulation results given by MAX+PUSSⅡ and the test results given by EPF10K10LC84 indicated that the designed system was flexible and reliable．