Abstract: The effect of fading and interference effects can be combated with equalizer for a MIMO system. MIMO systems exploit the multipath propagation in rich scattering environment using multiple transmit and receive antennas to increase the capacity of a link. In this contribution, we provide an exact BER analysis for fading channels with maximal-ratio combining (MRC) and imperfect channel estimation at the receive The BER characteristics for the various transmitting and receiving antennas simulated in MATLAB tool box and it shows that the MRC equalizer based receiver is a good choice for removing some ISI and minimizes the total noise power. The results show that the BER decreases as the m x n antenna configurations is increased.