Flicker Prevention and Noise Reduction Using Edge-Spike Modulation in Visible Light Communication
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In this paper, we introduce an edge-spike modulation method for visible light communication (VLC). This method is effective in pre- venting LED flicker and 120 Hz noise interference in base-band VLC. In the VLC transmitter, edge-spikes are generated by passingthe digital data through a simple RC-high pass filter (HPF). The LED modulation of the edge-spikes does not change the average powerof the LED light; thus it prevents LED flicker. In the VLC receiver, the 120 Hz noise from other lighting lamps is easily eliminated by RC-HPF, while the edge-spike signal is detected normally. In our experiment, the message of an air-quality sensor was successfully transmitted using edge-spike modulation. This structure is useful in constructing, e.g., wireless gas monitoring sensor systems to warn and prevent harmful gas leakage accidents in buildings using LED light.
Abstract
In this paper, we introduce an edge-spike modulation method for visible light communication (VLC). This method is effective in pre- venting LED flicker and 120 Hz noise interference in base-band VLC. In the VLC transmitter, edge-spikes are generated by passingthe digital data through a simple RC-high pass filter (HPF). The LED modulation of the edge-spikes does not change the average powerof the LED light; thus it prevents LED flicker. In the VLC receiver, the 120 Hz noise from other lighting lamps is easily eliminated by RC-HPF, while the edge-spike signal is detected normally. In our experiment, the message of an air-quality sensor was successfully transmitted using edge-spike modulation. This structure is useful in constructing, e.g., wireless gas monitoring sensor systems to warn and prevent harmful gas leakage accidents in buildings using LED light.
참고문헌 (7)
- T. Komine, "Fundamental analysis for visible-light communication system using LED lights", IEEE Trans. Consum. Electron., 50(1), pp.100~107 (2004)[DOI]
- Y. K. Cheong, "Hazardless biomedical sensing data transmission using VLC", IEEE Sens. J., 13(9), pp.3347~3348 (2013)[DOI]
- S. H. Lee, "A passive transponder for visible light identification using a solar cell", IEEE Sens. J., 15(10), pp.5398~5403 (2015)
- S. Rajagopal, "IEEE 802.15.7 visible light communication: modulation schemes and dimming support", IEEE Comm. Mag., 50(3), pp.72~82 (2012)
- C. Yao, "Performance Comparison among ASK, FSK and DPSK in visible light communication", Opt. Photon. J., 6(8B), pp.150~154 (2016)[DOI]
- C. K. Alexander, "Fundamentals of electric circuits", pp.253~257 (2009), McGraw-Hill
- Zhengzhou Winsen Electronics Technology, "Air quality detection module user's manual", 5~ (2014)