Abstract: An equalization algorithm based on the elementary matrix transformation is proposed for the MIMO communication channel, and the corresponding blind equalization algorithm is obtained for the row-diagonally-dominant MIMO system. This algorithm diagonalizes the MIMO channel matrix based on the statistics of the source signals by using the elementary matrix transformation in mathematics. The application of this blind equalization algorithm in ordinary MIMO system can eliminate the parameter estimation deviation of the ordinary MIMO equalizer because of sudden interruptions etc. and improve the BER performance of the system. Simulation results demonstrate that the proposed blind MIMO equalization algorithm has excellent performance both in equalizing the row-diagonally-dominant channel matrix and the elimination of the parameter estimation deviation of the ordinary equalizer.

Key words: elementary matrix transformation, equalizing parameter estimation deviation, blind MIMO equalization, row-diagonally-dominant MIMO channel