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• W2996605732 abstract "Visible light communication (VLC) is an emerging technology that enables broadband data rates using the visible spectrum. In this paper, considering slow beam steering where VLC beam directions are assumed to be fixed during a transmission frame, we find the steering angles that simultaneously serve multiple users within the frame duration and maximize the data rates. This is achieved by solving a non-convex optimization problem using a grid-based search and majorization-minimization (MM) procedure. Subsequently, we consider multiple steerable beams with a larger number of users in the network and propose an algorithm to cluster users and serve each cluster with a separate beam. We optimize the transmit power of each beam to maximize the data rates. Finally, we propose a non-orthogonal multiple access (NOMA) scheme for the beam steering and user clustering scenario, to further increase the data rates of the users. The simulation results show that the proposed beam steering method can efficiently serve a high number of users, and with power optimization, a sum rate gain up to thirteen times is possible. The simulation results for NOMA suggests an additional 10 Mbps sum rate gain for each NOMA user pair." @default.
• W2996605732 created "2019-12-26" @default.
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• W2996605732 date "2021-04-01" @default.
• W2996605732 modified "2023-10-17" @default.
• W2996605732 title "Slow Beam Steering and NOMA for Indoor Multi-User Visible Light Communications" @default.
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• W2996605732 doi "https://doi.org/10.1109/tmc.2019.2960495" @default.
• W2996605732 hasPublicationYear "2021" @default.
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