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Performance Analysis of RIS-assisted Hybrid RF-FSO Transmission Systems
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    Abstract:

    Free Space Optical(FSO) communications offer high speed, low cost, and strong anti-interference ability. However, the atmospheric turbulence-induced fading causes deterioration in the performance of FSO communication systems. The conventional solution is to use Radio Frequency(RF) links as parallel communication links to improve the system’s performance. On the other hand,Reconfigurable Intelligent Surfaces(RIS) can be employed to further improve the received signal-to-noise ratio of the RF link due to its advantages of low loss, easy deployment, and no need for complex coding and decoding. In this paper, a RIS-assisted hybrid RF-FSO transmission system is proposed to improve the communication quality of service. Based on this hybrid model,the exact expressions for the outage probability, average Bit Error Ratio(BER),and channel capacity are derived, and Monte Carlo simulations are presented to verify the accuracy of the analytical results. The results show that the performance of the proposed system is significantly improved compared with the conventional hybrid RF-FSO system.

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  • Received:
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  • Online: November 07,2022
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