Separating colorred signals distorted by convolutive channels using diagonal constrained decorrelation
Yong Xiang, Yingbo Hua, Senjian An, Alex Acero · IEEE International Conference on Acoustics Speech and Signal Processing · 2002
We consider the problem of separating colorred signals mixed by unknown convolutive channels. We introduce a variation of a previous approach of separating signals via decorrelation. This variation minimizes the mutual correlation among the output signals of a decorrelation matrix subject to a diagonal constraint. The diagonal constraint ensures a better quality of separation. The diagonal constraint is shown to be essential when the number of original signals is less than the number of distorted signals