Multistage blind source separations by wavelet analysis
Ryuichi Ashino, Takeshi Mandai, Akira Morimoto · International Journal of Wavelets Multiresolution and Information Processing · 2014
The purpose of blind source separation is to separate the original sources from the sensor array, without knowing the transmission channel characteristics. Besides methods based on independent component analysis, several methods based on time-frequency analysis have been proposed. In this paper, a new method of multistage separation is proposed, which improves our formerly proposed methods using the time-scale information matrix based on the continuous multiwavelet transform.