Multiple co-channel interferers influence on the selection diversity system over Rayleigh fading channels

Selection combining (SC) diversity receiver experiencing an arbitrary number of multiple, independent, equal power co-channel interferers, in the presence of Rayleigh fading channels was analyzed. Closed form expressions are obtained for the output SIR’s probability density function (PDF) and cumulative distribution function (CDF). In order to show the effects of the number of multiple interferers, diversity order and input SIR unbalance to the system performances, an outage probability (OP) analysis is derived. Another important measure of the system’s performances, an average bit error probability (ABER) is efficiently evaluated for non-coherent modulation schemes such as binary frequency-shift keying (BFSK) and binary differentially phase-shift keying (BDPSK).

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Przeanalizowano wpływ interferencji między wieloma niezależnymi kanałami (w obecności kanału Rayleigha z zanikami) na wybór najlepszego sygnału. Przedstawiono wyrażenie na prawdopodobieństwo parametru SIR (signal to interference ratio) oraz średnie prawdopodobieństwo bitu błędu (ABER).