TY - JOUR
T1 - Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks
AU - Pesek, Petr
AU - Zvanovec, Stanislav
AU - Chvojka, Petr
AU - Ghassemlooy, Zabih
AU - Haigh, Paul Anthony
PY - 2019/2
Y1 - 2019/2
N2 - 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 \mbox{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 m to 3 m reaches to 12.6 Mb/s for the 10-textCAP 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 $\mbox{2.4×10^{\minus15}m^{\minus2/3}$ } compared to a clear channel
AB - 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 \mbox{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 m to 3 m reaches to 12.6 Mb/s for the 10-textCAP 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 $\mbox{2.4×10^{\minus15}m^{\minus2/3}$ } compared to a clear channel
U2 - 10.1109/JPHOT.2018.2886645
DO - 10.1109/JPHOT.2018.2886645
M3 - Article
SN - 1943-0655
VL - 11
JO - IEEE Photonics Journal
JF - IEEE Photonics Journal
IS - 1
M1 - 7900307
ER -