Free Space Optics (FSO) is one the most in-demand technology, and is used indoors, on the ground, in space, and even underwater. It is used to broaden communication access to places where bandwidth is insufficient or where difficult topography prevents the use of cable communications. One of the foremost communication challenges that contribute to the degradation of FSO performance is the environmental condition. Hilly regions experience heavy rainfall and have rough terrain which may demean the FSO link communication. In this work, for real-time rain rate analysis of the Meghalaya region two unique rain attenuation models are investigated for monsoon months from the years 2014 to 2020. Considering Marshall and Palmer’s model and by employing 8, 16 and 32-quadrature amplitude modulation (QAM) schemes, radio-over-free space optical (RoFSO) system has been evaluated by varying FSO channel range, power and bit rate.

中文翻译：

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印度丘陵地区 RoFSO 链路性能分析及雨衰建模

自由空间光学 (FSO) 是最受欢迎的技术之一，用于室内、地面、太空甚至水下。它用于将通信接入拓宽到带宽不足或地形困难阻碍使用有线通信的地方。导致 FSO 性能下降的最重要的通信挑战之一是环境条件。丘陵地区降雨量大，地形崎岖，可能会降低 FSO 链路通信。在这项工作中，对于梅加拉亚地区的实时降雨率分析，研究了 2014 年至 2020 年季风月份的两个独特的降雨衰减模型。考虑 Marshall 和 Palmer 的模型并采用 8、16 和 32 正交幅度调制（ QAM) 方案，