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 $\mathcal {F}$ 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.

中文翻译：

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具有指向误差和不完美 CSI 的 F 湍流通道上的 RIS 辅助 FSO 系统分析

可重构智能表面 (RIS) 是一种通过大量可重构无源元件智能调谐信号反射来增强无线通信系统性能的解决方案。在这封信中，我们介绍了基于 Fisher-Snedecor 的 RIS 辅助 FSO 通信系统的性能分析 $\数学{F}$考虑不完全信道状态信息（CSI）和指向错误的两种检测方案下的分配信道。信噪比(SNR)的概率密度函数(PDF)和累积分布函数(CDF)是根据多变量Fox的H函数推导出来的。利用这些结果，导出了中断概率、平均 BER 和遍历容量的新表达式。所有呈现的结果都通过蒙特卡洛模拟得到验证。