Capacity analysis of MIMO MRC systems in correlated rayleigh fading environments

  • Authors:

  • Xianyi Rui;Ronghong Jin;Junping Geng

  • Affiliations:

  • Department of Electronic Engineering, School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, PR China 200240;Department of Electronic Engineering, School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, PR China 200240;Department of Electronic Engineering, School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, PR China 200240

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2007

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Abstract

In this paper, we analyze the capacity of multiple-input multiple-output systems employing maximal ratio combining under Rayleigh fading environments in the presence of spatial fading correlation at the transmitter or receiver. Based on statistical properties of the largest eigenvalue of correlated complex Wishart matrices, the exact closed-form expressions for the cumulative distribution function and the probability density function of the output signal-to-noise ratio are presented. The results are used to analyze the outage and ergodic capacities of the systems. The analysis shows that ergodic capacity improves with the increase of the channel correlation coefficient and the analytical results are validated by Monte Carlo simulations.