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Investigation of WDM VLC Using Standard 5 mm RGB LEDs

Burton, A; Zvanovec, S; Ghassemlooy, Z; Haigh, PA; Darwazeh, I; Minh, HL; (2018) Investigation of WDM VLC Using Standard 5 mm RGB LEDs. In: 2018 11th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP). IEEE Green open access

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Abstract

This paper investigates wavelength division multiplexing (WDM) uisng standard off-the shelf commercial 5 mm red, green, blue chip light-emitting diodes for visible light communications (VLC). From the initial observations of the illuminance footprint, it is found that the illumination overlap from each of the three colours is difficult to achieve a white light due to the physical layout of the emitting elements. We experimentally demonstrate that WDM is only achievable with a horizontal misalignment of +/-0.5 cm or +/-2 cm of the origin at a transmission span of 10 and 40 cm. Furthermore, with respect to the angular misalignment, WDM is achievable within a cone area of +5° of the origin at 10 cm distance and only along the origin at a distance of 40 cm.

Type: Proceedings paper
Title: Investigation of WDM VLC Using Standard 5 mm RGB LEDs
Event: 2018 11th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP), 18-20 July 2018, Budapest, Hungary
ISBN-13: 9781538613351
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/CSNDSP.2018.8471898
Publisher version: https://doi.org/10.1109/CSNDSP.2018.8471898
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: RGB LED , wavelength division multiplexing , visile light communications, Light emitting diodes , Wavelength division multiplexing , Image color analysis , Lighting , Color , Current measurement , Standards
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10063855
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