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

Haigh, Paul Anthony, Chvojka, Petr, Zvanovec, Stanislav, Ghassemlooy, Zabih and Darwazeh, Izzat (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. ISSN 0733-8724

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Official URL: http://dx.doi.org/10.1109/JLT.2018.2869022

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.

Item Type: Article
Uncontrolled Keywords: Carrier-less amplitude and phase modulation, digital signal processing, modulation formats, pulse shaping, visible light communications
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 19 Sep 2018 14:10
Last Modified: 11 Dec 2018 12:16
URI: http://nrl.northumbria.ac.uk/id/eprint/35785

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