Discuss the case where there a multiple (two) transmit antennas and multiple (two) receive antennas resulting in the formation of a 2x2 Multiple Input Multiple Output (MIMO) channel. We will assume that the channel is a flat fading Rayleigh multipath channel and the modulation is BPSK.

The equalization scheme used is Zero Forcing. As expected, the simulated results with a 2×2 MIMO system using BPSK modulation in Rayleigh channel is showing matching results as obtained in for a 1×1 system for BPSK modulation in Rayleigh channel.

For more theoretical description of Zero Forcing Equalization in 2x2 MIMO channel, please check
http://www.dsplog.com/2008/10/24/mimo-zero-forcing/