基于载波相频差异矩阵的单通道盲分离算法

目前欠定条件下盲分离算法的研究集中在稀疏性强的语音信号,适应性较差。且存在分离不完全、残余成分较大的问题。针对该问题提出了一种基于载波相频差异矩阵的单通道盲分离算法。该算法在信号频谱混叠的情况下,利用通信信号的载波相频信息来构建差异矩阵,实现单路到多路的变换。在多通道框架下以基于核密度估计的遗传算法实现多通道盲分离。实验结果表明:该方法对信号稀疏性无严格要求,适应性强,并能较彻底地分离出常规同频通信信号。

Single Channel Blind Separation Algorithm Based on Carrier Wave Phase-frequency Variance Matrix

At the present time,underdetermined blind separation algorithms focus on speech signals which have strong sparsity,which causes the drawbacks of weak adaptability and separation result is incomplete.Aiming at these problems,a single channel blind separation algorithm based on carrier wave phase-frequency variance matrix was proposed.In the condition of signal spectral mixed,carrier wave phase-frequency information was used to construct variance matrix,and then single channel was changed to multichannel.In t...