Mitigating Communication Fading Using Bit Error Rate Performance of Combining Techniques Simulink Model
T.T. Awofolaju, O. Oladepo & H. Lasisi
Department of Electrical and Electronic Engineering, Faculty of Engineering,
Osun State University, PMB 4494, Osogbo, Osun State, Nigeria
Email: ooladepo@yahoo.com
ABSTRACT
Information plays a significant role in the society, industry and business organizations but in spite of the improvement in wireless communication over the conventional communication system, its performance is still degraded by many transmission impairments such as fading, co-channel interference and noise. In wireless communication, diversity techniques are very powerful tools to mitigate the fading impairment. This work presents the investigation of bit error rate (BER) performance of combining techniques in combating fading. To visualize the BER performance of Maximal Ratio Combining (MRC), Equal Gain Combining (EGC) and Selection Combining (SC) techniques, some mathematical modelling develop in MATLAB/Simulink model were performed. The simulation results conform to their corresponding closed form expression. The performance improvement in the Bit Error Rate (BER) is maximum for Maximal Ratio Combining (MRC), while Equal Gain Combining (EGC) and Selective Combining (SC) provide marginally inferior performances. The developed program is tested and found to be reliable and accurate in combating signal fading.
Keywords: Bit error rate, combining techniques, fading, global system, mobile communication, Simulink, Statistical analysis.
