Lookup NU author(s): Dr Paul Haigh
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 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.
Author(s): Haigh PA, Chvojka P, Ghassemlooy Z, Zvanovec S, Darwazeh I
Publication type: Article
Publication status: Published
Journal: Optics Express
Online publication date: 18/03/2019
Acceptance date: 02/04/2016
Date deposited: 28/05/2020
ISSN (electronic): 1094-4087
Publisher: The Optical Society
PubMed id: 31052702
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