Blind deconvolution algorithms for MIMO-FIR channels driven by white but fourth-order colored signals

This paper deals with the blind deconvolution problem of MIMO-FIR channels driven by source signals which are temporally second-order uncorrelated but fourth-order correlated and spatially second- and fourth-order uncorrelated. We previously proposed a criterion for solving the blind deconvolution problem. However, we have not yet shown an algorithm to implement our proposed criterion. One of our objectives in the present paper is to propose an iterative algorithm for achieving blind deconvolution by using this criterion. To achieve this, we consider an approach called the non-deflation method. We propose an iterative algorithm based on this method. Moreover, we present a deflation algorithm using this criterion for the blind separation of MIMO constant channels.