基于循环平稳分析的MPSK信号调制分类  

Algorithm for modulation classification of MPSK signals based on cyclostationary

作　　者：罗明[1] 杨绍全[1] 魏青[1] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《信号处理》2006年第3期408-411,共4页Journal of Signal Processing

基　　金：国防预研项目:41101030103

摘　　要：提出了一种新的MPSK信号调制分类算法。通过对预处理后的MPSK信号进行循环平稳分析,把利用高阶累积量对复基带MPSK信号的调制分类推广到已调信号。由于高阶循环统计量具有抗平稳噪声的能力,从而在高阶循环累积量域构成了分类特征不变量。这种分类算法无需知道信号参数的先验信息,理论分析和实验结果证实了分类算法的有效性。A new algorithm is proposed for modulation classification of MPSK signals. This method analyzes the cyclostationary of pretreated signals. Then, the modulation classification algorithm of baseband signals is extended to band signals. Because cyclic higherorder statistics can depress Gaussian noise, cyclic higher-order cumulant can be used to structure invariants of classifier. This method doesn＇ t require prior information of received MPSK signals, Theoretical analysis and practical signal processing justify the efficiency of the new classification algorithm.

关 键 词：信号侦察 调制分类 MPSK信号 循环平稳 

分 类 号：TN911.6[电子电信—通信与信息系统] TN911.7[电子电信—信息与通信工程]