Mobile User Connectivity in Relay-Assisted Visible Light Communications
AbstractIn this paper, we investigate relay-assisted visible light communications (VLC) where a mobile user acts as a relay and forwards data from a transmitter to the end mobile user. We analyse the utilization of the amplify-and-forward (AF) and decode-and-forward (DF) relaying schemes. The focus of the paper is on analysis of the behavior of the mobile user acting as a relay while considering a realistic locations of the receivers and transmitters on a standard mobile phone, more specifically with two photodetectors on both sides of a mobile phone and a transmitting LED array located upright. We also investigate dependency of the bit error rate (BER) performance on the azimuth and elevation angles of the mobile relay device within a typical office environment. We provide a new analytical description of BER for AF and DF-based relays in VLC. In addition we compare AF and DF-based systems and show that DF offers a marginal improvement in the coverage area with a BER < 10–3 and a data rate of 100 Mb/s. Numerical results also illustrate that relay-based systems offer a significant improvement in terms of the coverage compared to direct non-line of sight VLC links. View Full-Text
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Pešek, P.; Zvanovec, S.; Chvojka, P.; Bhatnagar, M.R.; Ghassemlooy, Z.; Saxena, P. Mobile User Connectivity in Relay-Assisted Visible Light Communications. Sensors 2018, 18, 1125.
Pešek P, Zvanovec S, Chvojka P, Bhatnagar MR, Ghassemlooy Z, Saxena P. Mobile User Connectivity in Relay-Assisted Visible Light Communications. Sensors. 2018; 18(4):1125.Chicago/Turabian Style
Pešek, Petr; Zvanovec, Stanislav; Chvojka, Petr; Bhatnagar, Manav R.; Ghassemlooy, Zabih; Saxena, Prakriti. 2018. "Mobile User Connectivity in Relay-Assisted Visible Light Communications." Sensors 18, no. 4: 1125.
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