In this paper, novel mathematical approach for evaluation of probability
density function (PDF) of instantaneous signal-to-interference ratio (SIR) at
the receiver output in interference-limited environment is proposed.
Dual-branch selection combining (SC) receiver operating over correlated
Weibull fading channels applying SIR algorithm is considered. Analytical
expression for joint PDF of desired signal and interference at the receiver
output is derived and used for evaluation of PDF of instantaneous SIR. The
expression for PDF of SIR is used for system performance analysis via outage
probability, average bit error probability (ABEP) and average output SIR as
system performance measures. Numerical results are graphically presented
showing the effects of fading severity, average SIR at the input and level of
correlation on the diversity receiver performance. In addition, results
obtained for the PDF of instantaneous SIR in this paper, are compared to the
results when the PDF of instantaneous SIR is directly calculated.
Wireless multiuser communication systems: diversity receiver performance analysis, GSMuD design, and fading channel simulator