Visible Light Communications: A Novel Indoor Network Planning Approach
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A4 Artikkeli konferenssijulkaisussa
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en
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7
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2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings
Abstract
We propose a Partition-based Visibility (PV) graph modeling to find the minimum number of Visible Light Communications (VLC) nodes and their locations for reliable indoor coverage. VLC network offers a low-cost technology on a license-free spectrum to complement the contemporary mobile network services offered on Radio Frequency (RF) bands. However, VLC suffers from propagation limits: Firstly, in presence of opaque obstacles such as walls, doors, and even curtains, strong link blockage is experienced as the power of reflections is much weaker than the power of the Line-of-Sight (LoS) link. Secondly, the received optical power at users drops as the angle of irradiance between a LED lamp and the user increases, imposing a range constraint on the VLC nodes. So, inspired by the Art Gallery Problem, we optimize the number and the locations of VLC nodes by characterizing the PV graph as a dual presentation of the floor plan and a Maximal Clique Clustering algorithm, which is able to solve not only the art gallery problem but also to extend the approach for the range constrained case.Description
Funding Information: This research work was partly supported by Academy of Finland under the grant 339446. Publisher Copyright: © 2021 IEEE.
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Abedi, M, Dowhuszko, A A & Wichman, R 2021, Visible Light Communications: A Novel Indoor Network Planning Approach. in 2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings. IEEE, IEEE Global Communications Conference, Madrid, Spain, 07/12/2021. https://doi.org/10.1109/GLOBECOM46510.2021.9685571