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Poster: Visible Light Communication in the Dark

Published: 07 September 2015 Publication History

Abstract

We present a new visible light communication (VLC) primitive: VLC in the dark, where the communication sustains even when the LED light appears dark. We achieve the goal by reducing the duty cycle of the light source to an extremely low level (0.0019%) such that the illuminance is imperceptible to human eyes and yet can still be sensed by photodiodes to decode data. VLC in the dark consumes much lower energy than the conventional VLC links and thus is appealing for enabling VLC uplink or communication among Internet-of-Things devices with tight energy budget. We build a preliminary prototype to demonstrate its feasibility. Our current single link achieves 190.7 bps data rate with 46.8 microwatts power consumption at the LED.

References

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T. Borogovac, M. B. Rahaim, M. Tuganbayeva, and T. D. Little. "Lights-off" visible light communications. In Proceedings of 2nd IEEE Globecom 2011 Workshop on Optical Wireless Communications, pages 797--801. IEEE, 2011.
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Cree, Inc. Pulsed over-current driving of Cree XLamp LEDs: information and cautions. REV 1B.
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Digilent, Inc. Digilent Pmod interface specification, November 2011.
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R. Gilmore and L. Besser. Practical RF circuit design for modern wireless systems, volume 1. Artech House, 2003.
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J. Li, A. Liu, G. Shen, L. Li, C. Sun, and F. Zhao. Retro-VLC: Enabling battery-free duplex visible light communication for mobile and iot applications. In Proceedings of HotMobile'15.
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L. Li, P. Hu, C. Peng, G. Shen, and F. Zhao. Epsilon: A visible light based positioning system. In Proceedings of NSDI'14).
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Texas Instruments, Inc. Amplifiers and bits: an introduction to selecting amplifiers for data converters, May 2015.

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    cover image ACM Conferences
    MobiCom '15: Proceedings of the 21st Annual International Conference on Mobile Computing and Networking
    September 2015
    638 pages
    ISBN:9781450336192
    DOI:10.1145/2789168
    Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

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    New York, NY, United States

    Publication History

    Published: 07 September 2015

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    Author Tags

    1. energy efficiency
    2. internet of things
    3. visible light communication

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    MobiCom '15 Paper Acceptance Rate 38 of 207 submissions, 18%;
    Overall Acceptance Rate 440 of 2,972 submissions, 15%

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