Precise error rate analysis of MIMO system with interference and imperfect channel state information

In this paper, we derive closed-form solution for the bit error rate (BER) of multi-input multi-output (MIMO) system with maximum ratio combining (MRC). We consider binary PSK (BPSK) modulation suffering from cochannel interference(CCI) and imperfect channel state information (CSI). We assume a propagation model wherein the desired and interfering signals undergo independent and identically distributed (i.i.d.) Rayleigh fading channels. The numerical results presented in this paper demonstrate the system performance under very realistic propagation and detection conditions including MIMO system, CCI, imperfect CSI, generalized fading channels, and AWGN.