说明：  本文介绍了一种通过FPGA实现QPSK或更高阶PSK信号的方法，可灵活地通过上位机的PCI总线控制参数，产生不同载波频率、不同脉冲宽度、不同占空比、不同重复周期等的QPSK信号，对雷达等系统的设计者具有很好的借鉴意义
(This paper introduces a method of realizing QPSK or higher order PSK signal by using FPGA. It can flexibly control parameters through PCI bus of host computer to generate QPSK signals of different carrier frequency, different pulse width, different duty cycle and different repetition period. It has a good reference for designers of radar and other systems.)