Determination of rain attenuation parameters for free space optical link in tropical rain |
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| Authors: | Samir A. Al-Gailani Abu Bakar Mohammad Usman U. Sheikh Redhwan Q. Shaddad |
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| Affiliation: | 1. Lightwave Communication Research Group, InfoComm Research Alliance, Universiti Teknologi Malaysia, 81310 Johor, Malaysia;2. Industrial Technical Institute, Mua’lla, Aden, Yemen;3. Faculty of Engineering and Information Technology, Taiz University, Yemen;4. Computer Vision, Video and Image Processing Research Lab, Department of Microelectronics and Computer Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Malaysia |
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| Abstract: | Free space optics (FSO) is a promising communication technique for various types of services in the optical access network. Single beam FSO system in tropical rainy weather is vulnerable to atmospheric rain attenuation, so it is necessary to have precise power law parameters of rain attenuation in tropical regions. In this study, the power law parameters k, and α are estimated as 2.03 and 0.74, respectively for the FSO applications in tropical South-East Asian weather. These parameters were evaluated by using least square mean equation (LSME) method with Levenberg–Marquardt optimization based on the one year collected heavy rain data. The obtained parameter values for tropical weather are contributed to improve link performance for high-speed networks. |
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| Keywords: | Free space optics Rainfall rate Rain attenuation Power law parameters Tropical rain |
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