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http://dx.doi.org/10.6109/jkiice.2018.22.1.140

Implementation of VLC Relay Module to Improve Communication Disconnection Phenomenon and Coverage Expansion in Non-Line-of-Sight Area  

Lee, Sang-gwon (Department of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education(KOREATECH))
Lee, Dae-hee (Department of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education(KOREATECH))
Oh, Chang-heon (Department of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education(KOREATECH))
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.22, no.1, 2018 , pp. 140-146 More about this Journal
Abstract
Recently, VLC(Visible Light Communication) fusing with LED(Light Emitting Diode) used in indoor lighting and wireless communication technology has attracted attention. However, the VLC can communicate only within the coverage to measure the optical signal and the communication disconnection phenomenon is occur in the NLoS(Non-Line-of-Sight) area. In this paper, we propose VLC relay module to extend the coverage of VLC and improve the communication disconnection phenomenon in NLoS area. The proposed VLC relay module transmits the packet received from the transmitter to the VLC relay module and receiver. The experiment was carried out by installing one VLC transmitter and three VLC relay modules, communication coverage expansion and the improvement of communication disconnection phenomenon in the NLoS were confirmed by the increase of the VLC relay module. Also, we confirmed that the optical signal measurement performance is improved 2.4 times by using the dual sampling method.
Keywords
Visible Light Communication; VLC Relay Module; Communication Coverage; Asynchronous Transmission;
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Times Cited By KSCI : 1  (Citation Analysis)
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