Iterative algorithms based on multistage criteria for multichannel blind deconvolution

Blind deconvolution and blind equalization have been important interesting topics in diverse field including data communication, image processing, and geophysical data processing. Recently, Inouye and Habe introduced a multis tage criterion for attaining blind deconvolution of multiple-input multiple -output (MIMO) linear time-invariant (LTI) systems. In this correspondence, based on their criterion, we present iterative algorithms for solving the blind deconvolution problem of MIMO LTI systems. However, their criterion s hould be subjected to several constraints of equations. Therefore, they pro posed a new constraint-free multistage criterion for accomplishing the blin d deconvolution of MIMO LTI systems. Based on their unconstrained criterion , we show iterative algorithms for solving the blind deconvolution of multi channel LTI systems.