Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
권호 표지
DOI QR코드

DOI QR Code

Flicker Prevention Through Transition-Frequency Modulation in Visible Light Communication

가시광통신에서 천이주파수 변조를 이용한 플리커 방지

  • Lee, Seong-Ho (Department of Electronics and IT Media Engineering, Seoul National University of Science and Technology)
  • 이성호 (서울과학기술대학교 전자 IT 미디어공학과)
  • Received : 2020.07.09
  • Accepted : 2020.07.20
  • Published : 2020.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, we applied transition-frequency modulation to prevent the flickering of light-emitting diodes (LEDs) in visible light communication (VLC). In the VLC transmitter, rectangular waveforms with transition frequencies of four and two in each bit time were used for the high and low bits, respectively, in the non-return-to-zero data. In the VLC receiver, an RC-high-pass filter (HPF) was used to eliminate the interference of the 120 Hz noise light from the adjacent lighting lamps, and an SR-latch circuit was used to recover the transmitted signal using spikes from the output of the RC-HPF. This configuration is useful for constructing VLC systems that are flicker-free and resistant to adjacent noise light interference.

Keywords

References

  1. A. M. Cailean and M. Dimian, ''Current Challenges for Visible Light Communications Usage in Vehicle Applications: A Survey", IEEE Commun. Surv. Tutor., Vol. 19, No. 4, pp. 2681-2703, 2017. https://doi.org/10.1109/COMST.2017.2706940
  2. S. Rajagopal, R. D. Roberts, and S. K. Lim, "IEEE 802.15.7 visible light communication: modulation schemes and dimming support", IEEE Commun. Mag., Vol. 50, No. 3, pp. 72-82, 2012. https://doi.org/10.1109/MCOM.2012.6163585
  3. Y. K. Cheong, X. W. Ng, and W. Y. Chung, "Hazardless biomedical sensing data transmission using VLC", IEEE Sens. J., Vol. 13, No. 9, pp. 3347-3348, 2013. https://doi.org/10.1109/JSEN.2013.2274329
  4. V. P. Rachim, Y. Jiang, H. S. Lee, and W. Y. Chung, ''Demonstration of long-distance hazard-free wearable EEG monitoring system using mobile phone visible light communication", Opt. Express, Vol. 25, No. 2, pp. 713-719, 2017. https://doi.org/10.1364/OE.25.000713
  5. S. H. Lee, "A passive transponder for visible light identification using a solar cell", IEEE Sens. J., Vol. 15, No. 10, pp. 5398-5403, 2015. https://doi.org/10.1109/JSEN.2015.2440754
  6. S. Li, A. Pandharipande, and F. M. J. Willems, "Unidirectional visible light communication and illumination with LEDs", IEEE Sens. J., Vol. 16, No. 23, pp. 8617-8626, 2016. https://doi.org/10.1109/JSEN.2016.2614968
  7. S. H. Lee, ''Illumination control of LEDs in visible light communication using Manchester code transmission", J. Sens. Sci. Technol., Vol. 25, No. 5, pp. 303-309, 2016. https://doi.org/10.5369/JSST.2016.25.5.303
  8. C. Yao, Z. Guo, G. Long, and H. Zhang, "Performance Comparison among ASK, FSK and DPSK in Visible Light Communication", Opt. Photonics J., Vol. 6, No. 8B, pp. 150-154, 2016. https://doi.org/10.4236/opj.2016.68B025