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This is the final published version of an article that has been published in its final definitive form by IEEE, 2018.
For re-use rights please refer to the publisher's terms and conditions.
© 2013 IEEE. Carrierless amplitude and phase modulation (CAP) is one of the spectrally efficient schemes that have been proposed to tackle the limited modulation bandwidth challenge in visible light communication (VLC). The VLC technology leverages existing lighting fixtures to provide wireless data communication, which makes it attractive for many applications. However, the commercially available white light emitting diodes (LEDs) that are predominantly employed in VLC offer low modulation bandwidths that limit the achievable data rate. Thus, CAP modulation is employed to improve achievable data rate, primarily due to its implementation simplicity and high spectral efficiency. The CAP scheme also has a special feature in that it can be implemented as a single band or a multiband scheme which provides design flexibility. This paper presents an in-depth study of the implementation of CAP in LED-based VLC systems, highlighting the unique features that make it specially suited for VLC applications. Furthermore, a comprehensive investigation is carried out regarding the design parameters of the CAP modulation transceiver, its benefits, and techniques to mitigate the challenges of CAP-based VLC systems.
Author(s): Akande KO, Haigh PA, Popoola WO
Publication type: Article
Publication status: Published
Journal: IEEE Access
Online publication date: 15/10/2018
Acceptance date: 07/10/2018
Date deposited: 07/03/2019
ISSN (electronic): 2169-3536
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