Non-Orthogonal Multi-band CAP for Highly Spectrally Efficient VLC Systems

Haigh, PA; Chvojka, P; Ghassemlooy, Z; Zvanovec, S; Darwazeh, I

doi:10.1109/CSNDSP.2018.8471870

Non-Orthogonal Multi-band CAP for Highly Spectrally Efficient VLC Systems

Lookup NU author(s): Dr Paul Haigh ORCiD

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This is the authors' accepted manuscript of a conference proceedings (inc. abstract) that has been published in its final definitive form by IEEE, 2018.

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Abstract

© 2018 IEEE. In this work we propose and experimentally demonstrate a novel non-orthogonal multi-band carrier-less amplitude and phase (NM-CAP) scheme for bandlimited visible light communication systems in order to increase the spectral efficiency. We show that a bandwidth saving up to 30% can be achieved thus resulting in 44% improvement in the measured spectral efficiency with no further bit error rate performance degradation compared to the traditional m-CAP scheme. We also show that higher order systems can provide higher bandwidth compression than low order systems. Furthermore, with no additional functional blocks at the transmitter or the receiver the proposed scheme introduces no extra computational complexity.