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Computer Science > Information Theory

arXiv:2209.10000 (cs)
[Submitted on 20 Sep 2022]

Title:Performance Analysis of Uplink Optical Wireless Communication System in Presence of STAR-RIS

Authors:Alireza Salehiyan, Mohammad Javad Emadi
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Abstract:Recently, reconfigurable intelligent surface (RIS) has gained research and development interests to modify wireless channel characteristics in order to improve performance of wireless communications, especially when quality of the line-of-sight channel is not that good. In this work, for the first time in the literature, we have used simultaneously transmitting and reflecting RIS (STAR-RIS) in non-orthogonal multiple-access visible light communication system to improve performance of the system. Achievable rates of the users are derived for two data recovery schemes, single-user detection (SUD) and successive interference cancellation (SIC). Then, sum-rate optimization problem is formulated for two operating modes of STAR-RIS, namely energy-splitting and mode-switching cases. Moreover, a sequential parametric convex approximation method is used to solve the sum-rate optimization problems. We have also compared energy-splitting and mode-switching cases and showed that these two modes have the same performance. Finally, numerical results for SUD and SIC schemes and two benchmarking schemes, time-sharing and max-min fairness, are presented and spectral- and energy-efficiency, number of STAR-RIS elements, position of users and access point are discussed.
Comments: 8 pages, 12 figures. Submitted to IEEE Journal of Lightwave Technology for possible publication
Subjects: Information Theory (cs.IT); Signal Processing (eess.SP)
Cite as: arXiv:2209.10000 [cs.IT]
  (or arXiv:2209.10000v1 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.2209.10000

Submission history

From: Alireza Salehiyan [view email]
[v1] Tue, 20 Sep 2022 21:09:15 UTC (415 KB)
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