一种基于数字测频的PCM/DPSK解调方法  

A Demodulation Method for PCM/DPSK Signals Based on Digital Frequency Measurement

作　　者：刘东华[1] 袁嗣杰[1] 

机构地区：[1]装备指挥技术学院,北京101416

出　　处：《电讯技术》2004年第6期129-132,共4页Telecommunication Engineering

摘　　要：本文提出了一种新颖的PCM/DPSK数字信号解调方法。通过数字测频算法,获取PCM/DP SK信号频率突变点,根据DPSK调制原理,实现PCM/DPSK信号的解调。文中详细介绍了此种解调方法的基本原理及实现过程,分析了解调过程中多普勒频率对解调结果的影响。计算机仿真结果表明,此方法比相干解调性能优越,抗干扰能力强,便于软件编程及DSP器件实现,具有一定的应用价值。This paper proposes a new demodulation method of PCM/DPSK signals. The method gets skip position of frequency by digital frequency measurement, thus to realize the demodulation for PCM/DPSK signal according to the regulation of modulation of the signal. This paper discusses the basic theory and implementation of the method, and analyses the effects of Doppler velocity on demodnlation during the course of demodulation. The computer simulation results indicate that the method with a bright future for application is good at anti-jamming and better than coherent demodulation and convenient to be realized by software and DSP.

关 键 词：数据传输 数字测频 PCM/DPSK 解调 

分 类 号：TN911.72[电子电信—通信与信息系统] TN76[电子电信—信息与通信工程]