基于星座图的QAM信号调制方式识别  

The Recognition of QAM Signal Based on Constellation Diagram

作　　者：张东坡[1] 陈允锋[2] 李新付[1] 李世杰[1] 彭小名[1] 

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314001 [2]海军驻上海地区电子设备军事代表室,上海200233

出　　处：《通信对抗》2006年第1期8-11,15,共5页Communication Countermeasures

摘　　要：给出了利用信号星座图的QAM信号调制方式识别技术。在对QAM信号进行分析的基础上。重点讨论了信号载频、码元速率盲估计方法以及信道盲均衡方法。仿真结果表明，利用这种方法，可以精确地估计QAM信号的载频和码元速率，成功地将信号星座图恢复出来，并通过信号星座图完成信号的识别。The modulation recognition technique of QAM signal by the constellation diagram is given in this paper. The method of blind carrier, symbol rate estimation and blind equalization are discussed emphatically based on the analysis of QAM signal. The simulation results show that the carrier and symbol rate of QAM signal can be estimated accurately, and the constellation can be recovered successfully by the method presented in this paper. The modulation recognition can be accomplished by the recovered constellation diagram.

关 键 词：QAM信号 调制方式识别 星座图 均衡 

分 类 号：TN911.7[电子电信—通信与信息系统] TP391.4[电子电信—信息与通信工程]