Subband index carrierless amplitude and phase modulation for optical communications

Akande, Kabiru O.; Popoola, Wasiu O.

Abstract

Subband index carrierless amplitude and phase modulation (SI-CAP) is proposed and investigated in this paper to improve the performance of multi-band CAP (m -CAP). The bit-error-rate (BER) analysis of the proposed SI-CAP is derived and verified through computer simulations. A detection scheme is also developed for SI-CAP, which achieves maximum likelihood performance at a significantly lower complexity. In addition, an experimental demonstration of the proposed SI-CAP is carried out for optical communication systems. Furthermore, an adaptive equalization technique is implemented to further enhance the performance gain of SI-CAP. It is shown that for the same order of complexity, the SI-CAP exhibits higher spectral and energy efficiency in comparison to m-CAP. Therefore, the performance gain of SI-CAP along with its design flexibility make it a suitable candidate for optical communication systems.

• Journal Article Type: Article
• Acceptance Date: Jul 25, 2018
• Online Publication Date: Jul 25, 2018
• Publication Date: Sep 15, 2018
• Deposit Date: May 21, 2021
• Journal: Journal of Lightwave Technology
• Print ISSN: 0733-8724
• Electronic ISSN: 1558-2213
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 36
• Issue: 18
• Pages: 4190-4197
• DOI: https://doi.org/10.1109/jlt.2018.2859818
• Public URL: https://uwe-repository.worktribe.com/output/5289246
• Related Public URLs: https://www.research.ed.ac.uk/en/publications/subband-index-carrierless-amplitude-and-phase-modulation-for-opti