一种奇异混合阵的盲信号提取算法  

An Algorithm of BSE for Singular Mixing Matrix

作　　者：白琳[1] 陈豪[1] 

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2012年第1期6-10,22,共6页Space Electronic Technology

摘　　要：在盲信号提取技术中,当混合矩阵是奇异方阵时,根据混合矩阵秩的性质,该文提出了一种盲信号可提取性判据来判断可提取的信号。通过引入信号变化度的概念,给出了一种在该情况下的可提取信号的提取算法。该算法可以将特定的信号提取出来,且计算简单,无需优化处理,可以解决奇异混合阵情况下的特定信号的提取。试验结果表明了该算法的有效性。Based on the rank of the mixing matrix,a kind of criterion about the probability of blind signal extraction(BSE) is put forward when the mixing matrix is singular.The criterion can estimate the signals which can be extracted.A kind of extraction algorithm is put forward by the definition of signal variability introduced.The algorithm is simple and the given signals can be extracted free of optimization for singular mixing matrix case.Simulation results illustrate the efficiency of the algorithm.

关 键 词：混合矩阵 奇异 盲信号提取 可提取性 信号变化度 

分 类 号：TN91[电子电信—通信与信息系统]