PEŠEK, P., et al. Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks. IEEE PHOTONICS JOURNAL. 2019, 11(1), ISSN 1943-0655. DOI 10.1109/JPHOT.2018.2886645.
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 C2n of 2.4 ×10−15 m −2/3 compared to a clear channel condition.
eng
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
IEEE
dc.relation.ispartof
IEEE PHOTONICS JOURNAL
dc.subject
Visible light communication
eng
dc.subject
free space optics
eng
dc.subject
multiband carrier-less amplitude and phase modulation
eng
dc.title
Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks
info:eu-repo/grantAgreement/Czech Science Foundation/GA/GA17-17538S/CZ/Combined Radio Frequency and Visible Light Bands for Device-to-Device communication/