基于VHDL的ASK调制与解调设计与实现-ASK modulation and demodulation VHDL Design and Implementation

四相相移键控，QPSK调制与解调器的设计，通过仿真解调出正确的信息码-Quadrature phase shift keying, QPSK modulation and demodulation of the design, the simulation code to demodulate the correct information