Abstract
Reconfigurable intelligent surface (RIS) is an enabling solution to enhance the wireless communication system performance by smartly tunning the signal reflection via a large number of reconfigurable passive elements. In this letter, we present the performance analysis of RIS-assisted FSO communication systems over Fisher-Snedecor <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\mathcal {F}$ </tex-math></inline-formula> distribution channel considering imperfect channel state information (CSI) and pointing errors under two types of detection schemes. The probability density function (PDF) and cumulative distribution function (CDF) of signal-to-noise ratio (SNR) are deduced in terms of multivariable Fox’s H function. Utilizing these results, the novel expressions for outage probability, average BER and ergodic capacity are derived. All presented results are verified by Monte Carlo simulations.
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