该文介绍了各种信息技术中信息的传输及通信起着支撑作用,而对于信息的传输,数字通信

已成为重要手段。该文根据当今现代通信技术的发展,对QPSK信号的调制解调问题进行了分析,

并给出了用美国ELANIX公司的动态系统设计、仿真和分析软件System View 进行系统仿真的具体

设置,分析了仿真结果,并提出了用FPGA 技术实现这种系统的详细方法。-This paper introduces a variety of information technology in information transmission and communication plays a supporting role, and for information transmission, digital communication has become an important tool. In this paper, according to today s modern communications technology, for QPSK modulation and demodulation signals are analyzed, and gives the U.S. company s Dynamic Systems Elanix design, simulation and analysis software for System Simulation System View the specific settings, an analysis of simulation results, and made use of FPGA technology to achieve the detailed methodology for such systems.