置换混叠信号的盲检测和分离  

Blind Detection and Separation for Permuted Signals

作　　者：方勇[1] 王伟[1] 王睿[1] 

机构地区：[1]上海大学通信与信息工程学院,上海200072

出　　处：《应用科学学报》2009年第5期491-497,共7页Journal of Applied Sciences

基　　金：国家自然科学基金(No.60872114);高等学校博士点基金(No.20060280003);上海市重点学科基金(No.S30108)资助项目

摘　　要：针对观测信号相互置换的情况,从盲源分离的角度研究置换混叠信号的盲检测与分离问题,给出了置换混叠信号的数学模型,提出了基于特征域可分的置换混叠区域检测方法,根据频谱特性和局部相关性分别提出了正弦置换混叠信号和置换混叠图像的盲检测与分离算法.实验结果表明,该方法能有效应用于置换混叠信号的检测.For permuted signals, the blind detection and separation problems are considered from the perspective of blind source separation. A mathematical mode is given to describe the permuted signals, and a blind detection and separation method presented according to the signal characteristics. By using the spectrum and partial correlation characteristics, blind detection and separation of the permuted sinusoidal signals and the permuted images are proposed. Simulation results show the effectiveness of the proposed method.

关 键 词：置换混叠 叠加混叠 盲检测与分离 特征域 

分 类 号：TN911.73[电子电信—通信与信息系统]