Chvojka, P;
Zvanovec, S;
Werfli, K;
Haigh, PA;
Ghassemlooy, Z;
(2017)
Variable m-CAP for bandlimited Visible Light Communications.
In: Jamalipour, Abbas and Papadias, Constantinos, (eds.)
Proceedings of 2017 IEEE International Conference on Communications Workshops (ICC Workshops).
(pp. pp. 1-5).
IEEE: Paris, France.
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Abstract
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.
| Type: | Proceedings paper |
|---|---|
| Title: | Variable m-CAP for bandlimited Visible Light Communications |
| Event: | 2017 IEEE International Conference on Communications Workshops (ICC Workshops) |
| ISBN-13: | 9781509015252 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ICCW.2017.7962624 |
| Publisher version: | https://doi.org/10.1109/ICCW.2017.7962624 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | carrier-less amplitude and phase modulation, visible light communications |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1570089 |
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