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Lookup NU author(s): Dr Paul Haigh
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© 2017 IEEE. In pulse shaping filters, parameters such as the roll-off factor and the symbol span, which determine the overall performance, are of great importance when implementing a real-time system due to limited hardware resources. In this paper, we experimentally investigate a multiband carrier-less amplitude and phase (m-CAP) visible light communications (VLC) system employing such filters and assess the link performance for a range of filter lengths and show the relationship between the system data rate (or spectral efficiency) and computational complexity. We show that lower order m-CAP can offer the same system performance as higher order systems while offering much lower computational complexity. By optimizing the filter parameters and the order m of an m-CAP VLC link, we achieve the largest improvement in the data rate and bandwidth efficiency of 9.69% and 40.43%, respectively, when compared with 2- A nd 8-CAP. We also show that the m-CAP VLC link with ≥6 can be designed with the same filter parameters to demonstrate a link with both the highest data rate and spectral efficiency simultaneously in contrast to lower order systems.
Author(s): Chvojka P, Werfli K, Zvanovec S, Haigh PA, Vacek VH, Dvorak P, Pesek P, Ghassemlooy Z
Publication type: Article
Publication status: Published
Journal: IEEE Photonics Journal
Print publication date: 01/10/2017
Online publication date: 04/09/2017
Acceptance date: 31/08/2017
ISSN (print): 1943-0647
ISSN (electronic): 1943-0655
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