Title: Hybrid visible light communication power optimisation in indoor environment

Authors: F. Choong; Tan Ching Han; Yandan Lin

Addresses: School of Engineering and Physical Sciences, Heriot-Watt University, 1, Jalan Venna P5/2, Precinct 5, 62200 Putrajaya, Wilayah Persekutuan Putrajaya, Malaysia ' School of Engineering, Taylors University, 1, Jalan Taylors, 47500 Subang, Jaya, Selangor, Malaysia ' Department of Light Sources and Illuminating Engineering, Fudan University, (Jiangwan Campus), No. 2005 Songhu Road, Shanghai 200438, China

Abstract: Traditional way of handling more traffic is by having higher cell density, higher spectral efficiency and carrier aggregation. Many network optimisations have been put in place to overcome this high growth in data traffic demand. However, the network electricity consumption also increases tremendously. Hybrid visible light communication (HVLC) rides on solid-state light emitting diode lighting infrastructure with higher energy efficiency. HVLC has the advantages of high data rates, higher bandwidth, un-licence requirement, lower cost and more energy efficient. This paper focuses on recent breakthrough and advancement in HVLC especially for indoor applications. Two indoor lighting topologies were proposed to determine their power optimisation performances. The power optimisation through linear programming methods were used to simulate and compare the performance of square and ring topology design. The square topology showed better performance as compared to ring topology. Also, the number of users vs. received power and channel assignment's performance is also better for square topology. The findings demonstrated the feasibility of HVLC for indoor application.

Keywords: HVLC; hybrid visible light communication; radio frequency; visible light communication; square topology; ring topology; bandwidth; power optimisation; energy efficiency; lighting; LED; light-emitting-diodes.

DOI: 10.1504/IJSNET.2022.120272

International Journal of Sensor Networks, 2022 Vol.38 No.1, pp.37 - 45

Received: 07 Jan 2021
Accepted: 20 Feb 2021
Published online: 13 Jan 2022 *

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