摘要
数字信号调制方式的识别是近年来迅速发展起来的一门新技术,它是信号分析领域的重要组成部分。调制识别技术具有很高的实用价值。在军用和民用方面都有重要应用,如通过调制识别技术查清相关信号的参数和性质。这里针对短波信道条件下的MPSK信号调制识别问题,研究了一种基于功率谱和谱相关为特征的调制方式的分类与识别方案。该方案中提取了以信号功率谱的各种特征为主要的特征参数,通过对BPSK、QPSK、8PSK几种常用的数字信号进行仿真识别表明,该方法简单便于工程实现,具有很好的实用性。
The recognition of modulation modes for digital signals is a new technology in recent years,and also an important part of signal analysis field.This technology is of very high practical value in military and civil use,for example,by modulation recognition,one could acquire the parameter and character of the related signals.For the modulation and recognition of MPSK signals in the condition of shortwave channels,a scheme for classifying and recognizing modulation modes based on the characters of power charts and chart relativities is proposed.This scheme picks up the main characters of signal power charts.The simulated recognition on BPSK,QPSK and 8PSK digital signals indicates that this method is easy in engineering implementation and of better practicability.
出处
《通信技术》
2011年第11期23-24,102,共3页
Communications Technology
关键词
MPSK信号
调制
识别
特征参数
MPSK signal
modulation
recognition
character parameter
