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Analysis of Nyquist Pulse Shapes for Carrier-less Amplitude and Phase Modulation in Visible Light Communications

Haigh, PA; Chvojka, P; Zvanovec, S; Ghassemlooy, Z; Darwazeh, I; (2018) Analysis of Nyquist Pulse Shapes for Carrier-less Amplitude and Phase Modulation in Visible Light Communications. Journal of Lightwave Technology , 36 (20) pp. 5023-5029. 10.1109/JLT.2018.2869022. Green open access

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Abstract

This paper proposes and experimentally demonstrates, for the first time, two new candidate pulse shapes for carrier-less amplitude and phase modulation in the context of visible light communications. It is commonly accepted that the pulse shape at the heart of the Hilbert pair used to generate the required orthogonal signal spaces should be the square-root raised cosine. In this work, we introduce two additional candidate pulse shapes, namely the first-order Xia pulse and the so-called better-than-Nyquist pulse. We demonstrate experimentally that the better-than-Nyquist pulse offers superior bit-error rate performance compared to the square-root raised cosine and Xia pulses under additive white Gaussian noise channel conditions, whilst offering lower computational complexity.

Type: Article
Title: Analysis of Nyquist Pulse Shapes for Carrier-less Amplitude and Phase Modulation in Visible Light Communications
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JLT.2018.2869022
Publisher version: https://doi.org/10.1109/JLT.2018.2869022
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: Shape, Pulse shaping methods, Light emitting diodes, Phase modulation, Visible light communication, OFDM, Carrier-less amplitude and phase modulation, digital signal processing, modulation formats, pulse shaping, visible light communications
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: http://discovery.ucl.ac.uk/id/eprint/10056942
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