On decorrelation in dual-branch diversity systems

Authors:
Sasan Haghani;Norman C. Beaulieu
Affiliations:
Department of Electrical and Computer Engineering, University of South Alabama, Mobile, AL;iCORE Wireless Communications Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, Canada
Venue:
IEEE Transactions on Communications
Year:
2009

Citing 4
Cited 1

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Abstract

The performance of a dual-branch decorrelator receiver operating in correlated Rayleigh and Rician fading channels in conjunction with selection combining (SC) and switch-and-stay combining (SSC) is analyzed and compared to the performance of a conventional SC and SSC receiver. For each combining scheme, analytical expressions for the average bit error rate (BER) of several modulation techniques of practical interest, the mean output signal-to-noise ratio (SNR) and the outage probability are derived. It is shown that the decorrelator receiver has superior performance over the conventional receiver by as much as 2.83 dB in average SNR. The effects of modulation order, correlation coefficient and the severity of fading on the performance of the decorrelator receiver are studied.