Abstract
In this paper, an exact performance analysis for the hybrid radio frequency/free space optical (RF/FSO) communication system based on receiver diversity combining technique is presented. The hybrid system transmits the same data with the same data rate over the RF and FSO links simultaneously. The selection combining technique is implemented to combine the received signals from both link. New closed-form expressions for the average bit error rate and outage probability are derived in order to trace the system’s performance under the combination of the atmospheric turbulence and weather conditions variation. The analysis of the hybrid system’s performance clearly indicates that the system is advantageous as it exploits the complementary properties of the FSO and RF channels. In addition, the performance comparison demonstrates the hybrid system’s superior performance compared with the FSO and RF systems over a different variation of the atmospheric channel.
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