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半導體學報2019年第10期目錄
An online brain-computer interface in mobile virtual reality environments
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Experimental demonstration of a real-time multi-channel uplink VLC system

2019-10-11

Authors: Li, XJ; Min, CY; Gao, SS; Wang, YS; Chen, XB; Chen, HD

OPTICS COMMUNICATIONS

Volume: 453 Published: DEC 15 2019 Language: English Document type: Article

DOI: 10.1016/j.optcom.2019.124420

Abstract:

We propose and experimentally demonstrate a mull-channel uplink visible light communication (VLC) system for the first time, which is based on three commercially available white light emitting diodes (LED) and only one photo-diode (PD). By employing independent Xilinx field programmable gate arrays (FPGA), we realize the real-time data transmission. The on-off keying (OOK) modulation and time division multiple access (TDMA) techniques are combined together to offer a reliable multiple uplink access for three users. The electrical idle signal is designed to deal with serious inter-symbol interference (ISI) caused by the overlap of different LED signals at the receiver side, as well as to provide a stable illuminating environment. The experiment results indicate that our scheme has a great potential for the indoor practical VLC system implementation.

Full Text: https://www.sciencedirect.com/science/article/pii/S0030401819307369?via%3Dihub



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