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http://dx.doi.org/10.5916/jkosme.2014.38.2.169

LED transceivers with beehive-shaped reflector for visible light communication  

Sohn, Kyung-Rak (Department of Electronics and Communications Engineering, Korea Maritime and Ocean University)
Kim, Min-Soo (Department of Electronics and Communications Engineering, Korea Maritime and Ocean University)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.38, no.2, 2014 , pp. 169-174 More about this Journal
Abstract
This paper proposes a novel beehive-shaped reflector for application to light-emitting diode (LED) transceivers for illumination and bi-directional visible light communication (VLC). By using a diffuse propagation model extended to line-of-sight and direct signals, the distribution of illuminance and the path loss of the transceiver are investigated to evaluate the performance of the beehive-shaped reflector. To verify bi-directional communication, a VLC-based image capture system, comprising a complementary metal-oxide semiconductor (CMOS) image sensor and video processor unit, is demonstrated. Real-time images captured by the CMOS camera are successfully transmitted to the monitoring system via a free-space channel at a rate of 115.2 kbps.
Keywords
Visible light communications; Optical wireless communications; Bi-directional communications; Reflector; White LED lightings;
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