Free Space Optical Communication System under Different Weather Conditions
Free Space Optical Communication System under Different Weather Conditions
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不同天气条件下的自由空间光通信系统
DOI：
10.1515/joc-2019-0064
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发表时间：
2019
影响因子：
--
通讯作者：
Naresh Kumar
中科院分区：
文献类型：
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作者：
Ashish Kumar;Aakash Dhiman;Devender Kumar;Naresh Kumar
近年来，自由空间光通信系统（FSO）作为一种备受推崇的通信方式浮出水面。高运行速度、低带宽要求和系统可靠性是其广泛应用的主要因素。这些通信系统使用空气作为传输媒介。由于没有像光纤或电缆这样的组件，而空气只是介质，因此大气条件的变化对这些网络的性能起着至关重要的作用。其原因是湿度、雾霾、降雪、降雨、粉尘或烟雾等条件的存在改变了介质的衰减系数。衰减水平的提高导致损耗增加，需要仔细监测。本文从传输质量的角度分析了降雨对FSO网络性能的影响。本文讨论了降雨对空气衰减系数的影响。然后从误码率和q因子两个方面分析了这种衰减对网络传输的影响。为了证明影响，计算了晴朗天气和降雨条件下10gbps FSO链路的误码率和q值。
Abstract Free space optical communication systems (FSO’s) have surfaced as admired means of communication in the past few years. High speed of operation, low bandwidth requirements and system reliability are the major factors responsible for their wide range of applications. These communication systems use air as a medium of transmission. Since there is no component like fiber or cable, but air is only medium, the variations in atmospheric conditions play a vital role in performance of these networks. The reason behind is that the conditions like presence of humidity, haze, snowfall, rain, dust or smoke changes the attenuation coefficient of medium. The raised attenuation levels results in increased losses and need to be carefully monitored. The present work analyzes the influence of rain on the performance of FSO network in terms of quality of transmission. The paper discusses the impact of rainfall on attenuation coefficient of air. Then impact of this attenuation on network transmission is presented in terms of BER and Q-factor. In order to demonstrate the impact, BER and Q-value is calculated for 10 Gbps FSO link for clear weather and rainfall conditions.