A simple and accurate approximation to the SEP of MIMO-MRC systems with channel estimation error in the presence of cochannel interferences

Authors:
Guangqiu Li;Jianrun Ge
Affiliations:
School of Communication Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang, China;School of Communication Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

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New exponential bounds and approximations for the computation of error probability in fading channels

IEEE Transactions on Wireless Communications

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Abstract

In this paper, we investigate the impact of channel estimation error on the average symbol error probability (SEP) of multiple-input multiple-output maximal-ratio combining (MRC) systems in the presence of cochannel interferences (CCIs) in Rayleigh fading channels. Using an accurate exponential bound for the Gaussian Q-function, we present a simple approximate solution for the average SEP of general rectangular quardrature amplitude modulation (QAM) schemes with Mary signaling. The approximate solution can be used to compute the average SEP of general rectangular QAM in Rayleigh fading channels. Numerical or simulation results are presented to verify the accuracy of the solution.