Experimental validation of indoor relay-assisted visible light communications for a last-meter access network

• Main Authors: Pesek, Petr, Zvanovec, Stanislav, Chvojka, Petr, Ghassemlooy, Zabih, Mohd Nor, Norhanis Aida, Tabeshmehr, Pooria
• Format: Article
• Language: English; English; English
• Published: Elsevier 2019
• Subjects: TA1501 Applied optics. Lasers
• Online Access: http://irep.iium.edu.my/73246/7/73246%20Experimental%20validation%20of%20indoor%20relay-assisted%20visible%20light.pdf; http://irep.iium.edu.my/73246/8/73246%20Experimental%20validation%20of%20indoor%20relay-assisted%20visible%20light%20SCOPUS.pdf; http://irep.iium.edu.my/73246/19/73246_Experimental%20validation%20of%20indoor%20relay-assisted%20visible_wos.pdf; http://irep.iium.edu.my/73246/; https://www.sciencedirect.com/science/article/abs/pii/S0030401819305802

This paper provides experimental results for a relay-assisted visible light communications (VLC) link using a white light-emitting diode (LED) for a last-meter access network. We demonstrate that a relay-based VLC scheme improves the system performance, especially for link spans longer than 5 meters, in the presence of blocking and shadowing by redirecting the transmitted signal. We also demonstrate a multiband carrier-less amplitude and phase modulation (m-CAP) VLC link where the decode-and-forward (DF) relay scheme offers improvement in the data rate by 25% and 60% when compared to the amplify-and-forward (AF) relay-based link and single VLC link over a 7 m transmission distance respectively.