A Study on the Performance Analysis of Hybrid Diversity Combining Techniques for Rayleigh and Rician Fading Channels under AWGN

In order to deal with multipath propagation, diversity combining is used, where hybrid combining provide better outcomes in comparison with basic combining systems. Consequently, two new hybrid diversity combining schemes SCMRC and SC-EGC are investigated in this study. In this research work, data is transmitted from a single transmitting antenna and received by 4 distinct antennas for pure combining (MRC, SC, EGC) and 4 modules having 2 antennas per SC module (4x2) in hybrid combining (SIMO). Comparison between hybrid SC-EGC and SC-MRC has also been observed for 2 SC modules having 2, 3 and 4 antennas each. The most robust modulation technique, Binary phase shift keying (BPSK), was taken into consideration. The data was conveyed through Rayleigh and Rician fading channels and a performance analysis was done for the BER response in both cases for every possible combination of diversity combining ventures under flat fading conditions. Among them SC-MRC hybrid combining and Rician fading channel brought out a more prominent result as anticipated.