Abstract

We study the performance of a dual-branch SC receivers based on the signal to interference ratio (SIR) over correlated Weibull fading channels. SIR based selection diversity is a very efficient technique that reduces fading and channel interference influence. Due to insufficient antennae spacing, both desired and interfering signal envelopes experience correlative Weibull fading. Very useful closed form expressions are obtained for the output SIR's probability density function (PDF) and cumulative distribution function which is main contribution of this paper. Outage probability, the average output SIR, and the average error probability for coherent, noncoherent modulation are derived. Numerical results are also to show the effects of fading severity and correlation on the system performances.

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