With the advent of sixth-generation networks, reconfigurable intelligent surfaces (RISs) have revolutionized wireless communications through dynamic electromagnetic wave manipulation, thereby facilitating the adaptability and unparalleled control of real-time performance evaluations. This study proposed a framework to analyze the performance of RIS-assisted free-space optics (FSO) communication over doubly inverted Gamma-Gamma (IGGG) distributions with pointing error impairments. Furthermore, a special scenario addressing secure communication in the potential presence of an eavesdropper. Consequently, we derived closed-form expressions for the outage probability, average bit error rate, average channel capacity, average secrecy capacity, and secrecy outage probability by employing an asymptotic analysis to provide deeper insights into the influence of various system parameters. Finally, we verified our analytical results through appropriate numerical simulations.

翻译：随着第六代网络的出现，可重构智能表面通过动态电磁波调控革新了无线通信领域，从而为实时性能评估的适应性与无与伦比的控制能力提供了支持。本研究提出了一种分析框架，用于评估在存在指向误差损伤的双重倒置Gamma-Gamma分布信道下，RIS辅助自由空间光通信的性能。此外，针对潜在窃听者存在的特殊场景探讨了安全通信问题。通过采用渐近分析方法，我们推导了中断概率、平均误码率、平均信道容量、平均保密容量及保密中断概率的闭式表达式，从而更深入地揭示了各类系统参数的影响机制。最后，我们通过相应的数值仿真验证了理论分析结果。