Capacity Analysis of an MISO Free-Space Optical Communications Assisted by Concave ORIS
作者机构：Faculty of Engineering and the Built EnvironmentUniversity of JohannesburgJohannesburg 2092South Africa Faculty of Engineering and Applied ScienceMemorial University of NewfoundlandNL A1B 3X5Canada
出 版 物：《Journal of Communications and Information Networks》 (通信与信息网络学报（英文）)
年 卷 期：2023年第8卷第3期
页 面：295-302页
核心收录：
学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学]
主 题：ORIS concave reflectors MISO FSO communication systems ergodic channel capacity
摘 要：This paper explores the ergodic channel capacity of multiple-input single-output(MISO)free-space optical(FSO)communication systems,assisted by(optical)re-configurable intelligent surfaces[(O)RIS],made of concave *** the one hand,RIS technology mitigates dead zones in communication ***,it increases the data rate and communication range,enhances the communication channel by making it intelligent,and improves the system’s ***,the RIS technology improves the spectrum and energy efficiencies of the considered *** the other hand,transmitting diversity mitigates deep fade and helps to achieve beamforming to regulate the beam sent in a specific ***,multiple light sources help to send different versions of the same information at other time ***,compared to flat reflectors,concave mirrors provide economic advantages enabled by their natural shape,which helps converge the impinging light beams into the same focal *** this paper,we harness the full potential of ORIS and MISO technologies in an FSO system by exploiting the hollow of concave reflectors to focus the reflected beams on a single *** derive an approximated closed-form expression,provide results of the proposed ORIS-aided FSO systems’ergodic channel capacity,and discuss the suitable type of concave *** results show that all types of concave mirrors provide similar results except when the thickness of the reflector is large enough to impact the reflected light.
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