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Variable m-CAP for bandlimited Visible Light Communications

Lookup NU author(s): Dr Paul HaighORCiD



This is the authors' accepted manuscript of a conference proceedings (inc. abstract) that has been published in its final definitive form by IEEE, 2017.

For re-use rights please refer to the publisher's terms and conditions.


© 2017 IEEE. The multi-band carrier-less amplitude and phase (m-CAP) modulation technique has been demonstrated as a significant candidate for use in visible light communication (VLC) systems, as spectral efficiency becomes ever more important. When employing m-CAP modulation, the signal bandwidth is typically split into m equally distributed subcarriers regardless of the -3 dB bandwidth. Thus, in this paper we investigate the impact of splitting the signal bandwidth into unequally spaced subcarriers on the m-CAP VLC system performance. We demonstrate that by allocating different bandwidths for individual subcarriers, we can achieve up to 36% improvement in data rate for 6-CAP (i.e. 6 subcarriers). We show that the higher the order of the variable m-CAP, the more significant improvement in data rate becomes even for a highly bandlimited VLC system when compared to the conventional m-CAP scheme.

Publication metadata

Author(s): Chvojka P, Zvanovec S, Werfli K, Haigh PA, Ghassemlooy Z

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 2017 IEEE International Conference on Communications Workshops (ICC Workshops)

Year of Conference: 2017

Pages: 1-5

Online publication date: 03/07/2017

Acceptance date: 02/04/2016

Date deposited: 13/03/2019

Publisher: IEEE


DOI: 10.1109/ICCW.2017.7962624

Library holdings: Search Newcastle University Library for this item

ISBN: 9781509015252