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Visible light communications: Multi-band super-Nyquist CAP modulation

Lookup NU author(s): Dr Paul Haigh

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

© 2019 OSA - The Optical Society. All Rights Reserved.In this paper, we experimentally demonstrate the performance of a non-orthogonal multi-band super-Nyquist carrier-less amplitude and phase (m-SCAP) modulation for visible light communications (VLC). We break the orthogonality between sub-bands in the frequency domain by compressing the spectrum, purposely overlapping them, and introducing inter-band interference (IBI). We demonstrate that our proposed system can tolerate IBI, and hence spectral efficiency can be increased without introducing additional complexity to the receiver. We show that m-SCAP can tolerate up to 30% and 20% compression for 4- and 16-level quadrature amplitude modulation, respectively, thus leading to an improvement in spectral efficiencies up to 40% and 25%, respectively, at the cost of bit error rate performance, which however remains below the 7% forward error correction limit. Moreover, the experimental results are supported by numerical simulations.


Publication metadata

Author(s): Haigh PA, Chvojka P, Ghassemlooy Z, Zvanovec S, Darwazeh I

Publication type: Article

Publication status: Published

Journal: Optics Express

Year: 2019

Volume: 27

Issue: 6

Pages: 8912-8919

Online publication date: 18/03/2019

Acceptance date: 02/04/2016

Date deposited: 28/05/2020

ISSN (electronic): 1094-4087

Publisher: The Optical Society

URL: https://doi.org/10.1364/OE.27.008912

DOI: 10.1364/OE.27.008912

PubMed id: 31052702


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