Performance Analysis of Switch and Stay Combining Diversity for Beaulieu-Xie Fading Model

Beaulieu-Xie (BX) fading model is adequate for Femtocell and high-speed railway applications. In this paper, the performance evaluation of dual branch switch and stay combining diversity system operating over independent identically distributed BX fading channels are presented. In this context, the expressions of statistical parameters such as probability density function, cumulative distribution function and moment generating function are derived. After that, the expressions for moments, average output signal to noise ratio, outage probability, and average bit error rate for basic binary modulation schemes are derived. The expressions of channel capacity under different power and rate adaptive methods are also derived. Further, the optimal switching threshold values are calculated for different performance parameters. Moreover, the analytical results and existing results available in previous literature are compared. The Monte Carlo simulation results are carried out to verify derived expressions.