一种基于小波变换的MQAM信号调制识别方法  

Modulation Classification of M-QAM Signals based on Wavelet Transform

作　　者：向培胜[1] 曾鑫[1] 张伟 

机构地区：[1]中国人民解放军驻重庆气体压缩机厂军代室,重庆400030 [2]重庆金美通信有限责任公司,重庆400030

出　　处：《微处理机》2013年第2期25-27,共3页Microprocessors

摘　　要：MQAM调制样式识别是非合作通信研究的重要内容之一。通过分析MQAM信号在小波域具备的特征,提出了一种基于小波变换的MQAM信号识别算法,该算法不需要预先知道载频、波特率等参数,步骤简单,可在低信噪比情况下实现对MQAM信号的分类。Modulation classification is an important content of non-cooperative communication.This paper proposed a modulation recognition algorithm for M-QAM signals based on wavelet transform through an analysis of MQAM signal＇s characters in wavelet domain.This schemedoes not require the prior information about baud rate and carry frequency of the received signals,the process is simple and it is able to realize the classification under low-SNR scenario.

关 键 词：MQAM 调制样式识别 非合作 小波变换 低信噪比 

分 类 号：TN975[电子电信—信号与信息处理]