电波科学学报2012，Vol.27Issue(4)：825-831,839,8.
基于高阶累积量实现数字调相信号调制识别
Performance analysis of modulation recognition of MPSK signals based on high-order cumulants
摘要
Abstract
Theoretical analysis justifies that the ability of suppressing multi-path fa- ding improves as the order number of cumulants features increases. New features based on sixth-order cumulants are proposed for classification of M-ary phase shift keying（MPSK） signals. Performance of the proposed approach is demonstrated via computer simulations. The simulation results of correct classification probability show that sixth-order cumulants method works better than fourth-order cumulants under the deeply multi-path fading channel environments. The simulation results of variance of extraction features show that the fourth order cumulants method works better than sixth-order cumulants when the signal-to-noise ratio（SNR）is lower than or equal to 0 dB.关键词
调制识别/高阶累积量/多径信道Key words
modulation recognition/high-order cumulants/multi-path channel分类
信息技术与安全科学引用本文复制引用
孙钢灿,王忠勇,刘正威..基于高阶累积量实现数字调相信号调制识别[J].电波科学学报,2012,27(4):825-831,839,8.基金项目
2012国家自然科学基金面上项目 （）
中国博士后基金面上资助项目 （）
2010年河南省博士后基金资助项目 （）
