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Performance analysis of maximal ratio combiner in correlated rayleigh fading

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4 Author(s)
Fawaz S. Al-Qahtani ; School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3000, Australia. ; Arun K. Gurung ; Noura Al-Hinai ; Zahir M. Hussain

In this contribution, we investigate the impact of channel correlation on the ergodic capacity, capacity statistics and symbol error rate (SER) for maximal ratio combiner (MRC) multichannel diversity systems over correlated Rayleigh fading channels. We derive exact closed-form expressions for average channel capacity, an upper bound and its asymptotically tight approximation. The capacity statistics moment generating function (MGF), complementary cumulative distribution function (CDF) and probability density function (PDF) derived are valid for arbitrary number of receive antennas. Furthermore, we derive an exact closed expression for general M-PSK modulation. Correlation among channels degrades the system performance as expected.

Published in:

2009 International Conference on Advanced Technologies for Communications

Date of Conference:

12-14 Oct. 2009