Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/142891
Title: Cognitive multi-cell visible light communication with hybrid underlay/overlay resource allocation
Authors: Yang, Helin
Chen, Chen
Zhong, Wen-De
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Yang, H., Chen, C., & Zhong, W.-D. (2018). Cognitive multi-cell visible light communication with hybrid underlay/overlay resource allocation. IEEE Photonics Technology Letters, 30(12), 1135-1138. doi:10.1109/LPT.2018.2834903
Journal: IEEE Photonics Technology Letters
Abstract: In order to improve the spectral efficiency of indoor visible light communication (VLC) systems, in this letter, motivated by the concept of cognitive radio, we propose a new multi-cell cognitive VLC (C-VLC) system. The proposed multi-cell C-VLC system is comprised of both primary users and secondary users (SUs), by defining them based on users' service requirements. We investigate the unique optical constraints of transmitters in our proposed C-VLC system, and further propose a flexible hybrid underlay/overlay resource allocation approach to maximize the sum rate of SUs for the multi-cell C-VLC system, which is very different from radio frequency communication systems. Numerical results show that the proposed C-VLC system with hybrid overlay/underlay resource allocation achieves sum rate improvements of up to 29.2%, 20.6%, and 9%, compared with the conventional non-cognitive VLC system, the C-VLC system with only the underlay mode and the C-VLC system with only the overlay mode, respectively.
URI: https://hdl.handle.net/10356/142891
ISSN: 1041-1135
DOI: 10.1109/LPT.2018.2834903
Rights: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: https://doi.org/10.1109/LPT.2018.2834903
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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