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Visible Light Communications: Filter-less Wavelength Division Multiplexing

CSNDSP 2020 | Haigh PA, Burton A, Chvojka P, Zvanovec S, Ghassemlooy Z, et al. | In this paper, we propose a new receiver and demodulation method for use in wavelength division multiplexed visible ...

10 November 2020

Visible Light Communications: Filter-less Wavelength Division Multiplexing

Abstract

In this paper, we propose a new receiver and demodulation method for use in wavelength division multiplexed visible light communications systems, utilising the natural diversity offered by photodiodes. This is based on the wavelength dependent photodiode responsivities, which lead to different signal-to-noise ratios at the receiver. Using this method, it is possible to transmit independent information using on different wavelengths but where signals occupy the same electrical frequency range and where they would, otherwise, interfere. We illustrate and experimentally demonstrate that through simple subtractions the signals can be extracted with the constellations showing Q-factors corresponding to sufficiently low bit error rates.

Publication Type:Conference
Authors:Haigh PA, Burton A, Chvojka P, Zvanovec S, Ghassemlooy Z, Darwazeh I
Publisher:IEEE
Publication date:10/11/2020
Published proceedings:2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2020
ISBN-13978-1-7281-6051-1
StatusPublished
Name of conference:2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)
Conference place:Porto, Portugal
Conference start date:20/07/2020
Conference finish date:22/07/2020
DOI:http://dx.doi.org/10.1109/CSNDSP49049.2020.9249495
Full Text URL:https://discovery.ucl.ac.uk/id/eprint/10119482/

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