Analysis and Improvement of Optical Wireless Communication Systems in 6G

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Alemohammad, Mohammad Matin | 2024

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 57923 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Hadi, Mohammad; Pakravan, Mohammad Reza
Abstract:
The performance of visible light communication (VLC), as a key technology for next-generation wireless communication networks, 6G, can be significantly enhanced through the integration of metasurface-based optical reconfigurable intelligent surfaces (RIS). This research work introduces a novel channel model for a VLC system incorporating RIS-equipped transmitters, where the transparent optical RIS is directly integrated with the array of LEDs in VLC transmitter, enabling beam-steering. To harness the beam-steering capabilities of the modeled RIS-equipped transmitter, a traffic-aware resource allocation scheme is proposed and efficiently solved using a tailored fractional programming approach. Simulation results reveal that the proposed scheme has comparable performance with the high complexity exhaustive search algorithm concerning parameters such as average data rate and average transmission delay among users, and outperforms the conventional proportional fair schedular (PFS) scheme
Keywords:
Visible Light Communication ; Reconfigurable Intelligent Surface (RIS) ; Beam Steering ; Load Balancing ; Fractional Programming ; 6th Communication Networks