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Demonstration of a hybrid FSO/VLC link for the last mile and last meter networks

Lookup NU author(s): Dr Paul HaighORCiD



This is the final published version of an article that has been published in its final definitive form by IEEE, 2019.

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© 2018 IEEE. In this paper, a hybrid free-space optical and visible light communication (FSO/VLC) system was experimentally demonstrated as a solution to overcome the last mile and last meter access networks bandwidth bottleneck. We evaluate the system performance of a multiband carrier-less amplitude and phase (m-CAP) modulation scheme for a range of FSO/VLC link lengths and m-CAP parameters (i.e., the roll-off factor of the filters and a number of subcarriers) in terms of the data rate Rb (i.e., spectral efficiency). We show that for the configuration with a 1-m VLC link the 10-CAP offers more than a 40% improvement in the measured Rb compared to 2-CAP for the same bit error rate target. The Rb penalty due to the extension of a VLC-link span from 1 to 3 m reaches to 12.6 Mb/s for the 10-CAP scheme (i.e., ∼39% degradation in Rb). To fully cover all aspects of the hybrid FSO/VLC system, we also investigate the atmospheric turbulence effect on the 500-m FSO link where Rb is decreased by 30% for the refractive index structure parameter Cn 2 of 2.4 × 10-15 m-2/3 compared to a clear channel condition.

Publication metadata

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

Publication type: Article

Publication status: Published

Journal: IEEE Photonics Journal

Year: 2019

Volume: 11

Issue: 1

Print publication date: 01/02/2019

Online publication date: 13/12/2018

Acceptance date: 10/12/2018

Date deposited: 07/03/2019

ISSN (print): 1943-0647

ISSN (electronic): 1943-0655

Publisher: IEEE


DOI: 10.1109/JPHOT.2018.2886645


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