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http://dx.doi.org/10.7471/ikeee.2018.22.2.432

Multiple Visible Light Receiver Using A Flexible Solar Cell and Cds Cells  

Lee, Seong-Ho (Dept. of Electronics and IT Media Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of IKEEE / v.22, no.2, 2018 , pp. 432-439 More about this Journal
Abstract
In this paper, an omnidirectional visible light detector was developed by making the detecting surface of a flexible solar cell in a cylindrical form, which has a uniform receiving pattern in the horizontal plane. This solar cell detector receives simultaneously multiple signal lights incident from different directions and provides electrical power to the ASK demodulator in the receiver. In experiments, time division transmission method was used to receive three signal lights incident from different directions to the solar cell detector. Each signal light was ASK modulated using a carrier of 40 kHz, and the synchronizing pulses required for time division transmission were generated by detecting the 120 Hz AC signal included in the indoor illumination lamp with Cds cells. This receiving structure is useful in constructing an $N{\times}1$ optical link in visible light communication.
Keywords
Flexible solar cell; Cds cell; Visible light communication; LED; Omnidirectional; $N{\times}1$ optical link;
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