Haigh, PA;
Chvojka, P;
Ghassemlooy, Z;
Zvanovec, S;
Darwazeh, I;
(2019)
Visible light communications: multi-band super-Nyquist CAP modulation.
Optics Express
, 27
(6)
pp. 8912-8919.
10.1364/OE.27.008912.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Visible light communications: multi-band super-Nyquist CAP modulation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OE.27.008912 |
| Publisher version: | https://doi.org/10.1364/OE.27.008912 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Science & Technology, Physical Sciences, Optics, CARRIERLESS AMPLITUDE, PHASE MODULATION, SYSTEM |
| UCL classification: | UCL 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: | https://discovery.ucl.ac.uk/id/eprint/10072404 |
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