Performance analysis of dual-‘switch and stay’ combiner over correlated KG fading channels

Switch and Stay combiner (SSC) is a diversity combiner which can be used in practice as it offers less switching transition compared to popular selection diversity combiner. Performance of a dual Switch and Stay combining diversity receiver is analyzed in correlated generalized-K (KG) fading channels. Mathematical expressions for a number of performance measures such as the probability density function of the SSC output SNR, average output SNR, outage probability and amount of fading have been presented. Using the MGF-based approach, the expression for average bit error rate of non-coherent modulation scheme is also obtained. Effects of fading and correlation on the combiner performance is studied through numerical and simulation techniques. Numerical results are found to be closely matching with the simulation results.