Performance Analysis of M-PAM and M-QAM With Selection Combining in Independent But Non-Identically Distributed Rayleigh Fading Paths
A compact expression for pdf of SC combiner on independent but not necessarily identical distributed Rayleigh fading channels is derived. Using this expression, new exact-closed form expressions for average SER and average BER of M-PAM and M-QAM are studied. The proposed mathematical analysis is verified by various simulation results which demonstrate the accuracy of the theoretical approach. Diversity is an effective technique used in wireless communication systems to combat the performance degradation caused by fading. It can alleviate the deleterious effect of fading by means of multiple reception of the same information bearing signals.