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Performance Analysis of Multi-Branch Reconfigurable Intelligent Surfaces-Assisted Optical Wireless Communication System in Environment With Obstacles

Wang, Haibo ; Zhang, Zaichen ; Zhu, Bingcheng ; Dang, Jian ; Wu, Liang ; Wang, Lei ; Zhang, Kehan ; Zhang, Yidi ; Li, Geoffrey Ye

IEEE transactions on vehicular technology, 2021-10, Vol.70 (10), p.9986-10001 [Periódico revisado por pares]

New York: IEEE

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Título:
Performance Analysis of Multi-Branch Reconfigurable Intelligent Surfaces-Assisted Optical Wireless Communication System in Environment With Obstacles
Autor: Wang, Haibo ; Zhang, Zaichen ; Zhu, Bingcheng ; Dang, Jian ; Wu, Liang ; Wang, Lei ; Zhang, Kehan ; Zhang, Yidi ; Li, Geoffrey Ye
Assuntos: Adaptive optics ; Asymptotic analysis ; Barriers ; Bit error rate ; Communications systems ; High-speed optical techniques ; Metamaterials ; multi-branch wireless optical communication ; Optical communication ; Optical fiber communication ; Optical network units ; Optical receivers ; optical reconfigurable intelligent surface ; Optical transmitters ; pointing error ; Probability density functions ; probability of obstruction ; Reconfiguration ; Vibration ; Wireless communication ; Wireless communication systems ; Wireless communications
É parte de: IEEE transactions on vehicular technology, 2021-10, Vol.70 (10), p.9986-10001
Descrição: Since optical links are easily blocked by obstacles in the environment, they have been considered difficult to directly perform wireless communications. However, reconfigurable intelligent surfaces (RISs), as a new type of digital coding meta-materials, can significantly improve the coverage of optical communication by establishing new links. We propose a controllable multi-branch wireless optical communication system based on optical RISs. By setting up multiple optical RISs in the environment, multiple artificial channels are built to improve the system performance and to reduce the outage probability. In this paper, we investigate three factors affecting channel coefficients, including beam jitter, RIS jitter, and obstruction probability. We derive closed-form probability density function of channel coefficients, asymptotic average bit-error rate (BER), and the outage probability for systems with multiple branches. Our analysis reveals that the probability density function contains an impulse function, which causes irreducible error rate and outage probability floors. Based on our numerical results, the BER and outage probability floor of the multi-branch system are significantly reduced compared with the single direct path system. Therefore, the optical RIS assisted multi-branch wireless communication is a promising solution against obstacles of optical channel.
Editor: New York: IEEE
Idioma: Inglês

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Performance Analysis of Multi-Branch Reconfigurable Intelligent Surfaces-Assisted Optical Wireless Communication System in Environment With Obstacles

Wang, Haibo ; Zhang, Zaichen ; Zhu, Bingcheng ; Dang, Jian ; Wu, Liang ; Wang, Lei ; Zhang, Kehan ; Zhang, Yidi ; Li, Geoffrey Ye

New York: IEEE

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