An approach to the performance analyses of signal-to-interference (SIR) based selection combining (SC) operating over the correlated Rayleigh fading channels experiencing an arbitrary number of correlated multiple, co-channel interferers is presented. General analysis of multibranch SC where each correlated branch experiences an arbitrary number of multiple correlated co-channel interferers. Infinite series expressions are obtained for the output SIR’s probability density function (PDF), cumulative distribution function (CDF) and an important measure of the system’s performances, the outage probability (OP). An average bit error probability (ABER) is efficiently evaluated for modulation schemes such as binary frequency-shift keying (BFSK) and binary differentially phase-shift keying (BDPSK).

Keywords: Correlated Raylgieh fading channels, Multiple co-channel interference, Selection diversity