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http://dx.doi.org/10.5369/JSST.2017.26.6.408

Flicker-Free Visible Light Communication System Using Byte-Inverted Transmission  

Lee, Seong-Ho (Department of Electronics and IT Media Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of Sensor Science and Technology / v.26, no.6, 2017 , pp. 408-413 More about this Journal
Abstract
In this paper, we newly developed a byte-inverted transmission method for flicker-free visible light communication (VLC). The VLC transmitter sends original data in the former half period of the clock, and inverted data and in the latter half period of the clock. The VLC receiver receives the original data in the in the former half period of the clock. In this system, we used 480Hz clock that was generated from the 60Hz power line. The average optical power of the LED array in the transmitter is constant, thus flicker-free, in the observation time longer than the period of the clock that is about 2ms. This period is shorter than the maximum flickering time period (MFTP) of 5ms that is generally considered to be safe. This configuration is very useful in constructing indoor wireless sensor networks using LED light because it is flicker-free and does not require additional transmission channel for clock transmission.
Keywords
Visible light communication (VLC); byte-inverted transmission; flicker-free; LED light; power line;
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  • Reference
1 T. Komine and M. Nakagawa, "Fundamental analysis for visible-light communication system using LED lights", IEEE Trans. Consumer Electron., Vol. 50, No. 1, pp. 100-107, 2004.   DOI
2 Y. K. Cheong, X. W. Ng, and W. Y. Chung, "Hazardless biomedical sensing data transmission using VLC", IEEE Sensors Journal, Vol. 13, No. 9, pp. 3347-3348, 2013.   DOI
3 S. H. Lee, "A passive transponder for visible light identification using a solar cell", IEEE Sensors Journal, Vol.15, No.10, pp.5398-5403, 2015.   DOI
4 Z. Yu, R. J. Baxley, and G. T. Zhou, "Peak-to-average power ratio and illumination-to-communication efficiency considerations in visible light OFDM systems", IEEE Int. Conf. on Acoustics, Speech and Signal Processing, pp. 5397-5401, Vancouver, BC, 2013.
5 S. Rajagopal, R. D. Roberts, and S. K. Lim, "IEEE 802.15.7 Visible Light Communication: Modulation Schemes and Dimming Support", IEEE Communications Magazine, Vol. 50, No.3, pp.72-82, 2012.   DOI
6 X. Ma, K. J. Lee, and K. S. Lee, "Appropriate modulation scheme for visible light communication systems considering illumination", Electronics letters, Vol. 48 No.18, pp.1137-1139, 2012.   DOI
7 C. Yao, Z. Guo, G. Long, and H. Zhang, "Performance Comparison among ASK, FSK and DPSK in Visible Light Communication", Optics and Photonics Journal, Vol. 6, pp.150-154, 2016.   DOI