Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks
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...
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IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8574917/ |
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| author | Petr Pesek Stanislav Zvanovec Petr Chvojka Zabih Ghassemlooy Paul Anthony Haigh |
| author_facet | Petr Pesek Stanislav Zvanovec Petr Chvojka Zabih Ghassemlooy Paul Anthony Haigh |
| author_sort | Petr Pesek |
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| description | 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 (<italic>m</italic>-CAP) modulation scheme for a range of FSO/VLC link lengths and <italic>m</italic>-CAP parameters (i.e., the roll-off factor of the filters and a number of subcarriers) in terms of the data rate <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula> (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 <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula> compared to 2-CAP for the same bit error rate target. The <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula> 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., <inline-formula><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula>39% degradation in <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula>). 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 <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula> is decreased by 30% for the refractive index structure parameter <inline-formula><tex-math notation="LaTeX">$C_n^2$</tex-math></inline-formula> of 2.4 <inline-formula><tex-math notation="LaTeX">$\times\; 10^{-15}$</tex-math></inline-formula> m<inline-formula><tex-math notation="LaTeX">$^{-2/3}$</tex-math></inline-formula> compared to a clear channel condition. |
| format | Article |
| id | doaj-art-d08a75f0244c4dc09c022b091fe05ecb |
| institution | OA Journals |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
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| series | IEEE Photonics Journal |
| spelling | doaj-art-d08a75f0244c4dc09c022b091fe05ecb2025-08-20T02:38:09ZengIEEEIEEE Photonics Journal1943-06552019-01-011111710.1109/JPHOT.2018.28866458574917Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter NetworksPetr Pesek0https://orcid.org/0000-0001-6870-2445Stanislav Zvanovec1https://orcid.org/0000-0002-7902-2143Petr Chvojka2https://orcid.org/0000-0002-4582-739XZabih Ghassemlooy3https://orcid.org/0000-0002-5780-9703Paul Anthony Haigh4https://orcid.org/0000-0002-7249-5116Department of Electromagnetic Field, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, Czech RepublicDepartment of Electromagnetic Field, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, Czech RepublicDepartment of Electromagnetic Field, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, Czech RepublicOptical Communications Research Group, NCRLab, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, U.K.Department of Electronic and Electrical Engineering, University College London, London, U.K.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 (<italic>m</italic>-CAP) modulation scheme for a range of FSO/VLC link lengths and <italic>m</italic>-CAP parameters (i.e., the roll-off factor of the filters and a number of subcarriers) in terms of the data rate <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula> (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 <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula> compared to 2-CAP for the same bit error rate target. The <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula> 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., <inline-formula><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula>39% degradation in <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula>). 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 <inline-formula><tex-math notation="LaTeX">$R_b$</tex-math></inline-formula> is decreased by 30% for the refractive index structure parameter <inline-formula><tex-math notation="LaTeX">$C_n^2$</tex-math></inline-formula> of 2.4 <inline-formula><tex-math notation="LaTeX">$\times\; 10^{-15}$</tex-math></inline-formula> m<inline-formula><tex-math notation="LaTeX">$^{-2/3}$</tex-math></inline-formula> compared to a clear channel condition.https://ieeexplore.ieee.org/document/8574917/Visible light communicationfree space opticsmultiband carrier-less amplitude and phase modulation. |
| spellingShingle | Petr Pesek Stanislav Zvanovec Petr Chvojka Zabih Ghassemlooy Paul Anthony Haigh Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks IEEE Photonics Journal Visible light communication free space optics multiband carrier-less amplitude and phase modulation. |
| title | Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks |
| title_full | Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks |
| title_fullStr | Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks |
| title_full_unstemmed | Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks |
| title_short | Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks |
| title_sort | demonstration of a hybrid fso vlc link for the last mile and last meter networks |
| topic | Visible light communication free space optics multiband carrier-less amplitude and phase modulation. |
| url | https://ieeexplore.ieee.org/document/8574917/ |
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