Title :
Statistical Analysis of MIMO Beamforming With Co-Channel Unequal-Power MIMO Interferers Under Path-Loss and Rayleigh Fading
Author :
Li, Yongzhao ; Zhang, Lu ; Cimini, Leonard J., Jr. ; Zhang, Hailin
Author_Institution :
State Key Lab. of Integrated Services Networks, Xidian Univ., Xi´´an, China
Abstract :
Multiple-input multiple-output (MIMO) beamforming (MBF) can greatly increase the signal gain and reduce the effects of multipath fading for cell-edge users. The objective of this work is to investigate the impact of co-channel unequal-power MIMO interferers on an MBF desired receiver under realistic propagation conditions, including path-loss and Rayleigh fading. Two major contributions are made in this work: i) for the co-channel interference term in the signal-to-interference ratio (SIR) expressions, a closed-form expression of the probability density function (PDF) is derived; ii) for the desired signal term, a simple approximation is proposed. Moreover, closed-form PDF expressions for the SIRs are obtained for some special cases. Simulation results verify the validity of the theoretical analyses.
Keywords :
MIMO communication; Rayleigh channels; array signal processing; cochannel interference; probability; radio receivers; statistical analysis; MBF desired receiver; MIMO beamforming; Rayleigh fading; cell-edge users; closed-form PDF expressions; cochannel unequal-power MIMO interferers; multiple-input multiple-output beam-forming; path-loss; probability density function; signal-to-interference ratio; statistical analysis; Diversity reception; Interference; MIMO; Rayleigh channels; Signal to noise ratio; Transmitting antennas; Co-channel interferer; MIMO beamforming; path-loss; probability density function; signal-to-interference ratio;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2011.2155654
