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Demo: Coding with Superposed Reflection Light for LED-Camera Communication

Published: 04 October 2017 Publication History

Abstract

As a popular approach to implementing Visible Light Communication (VLC) on commercial-off-the-shelf devices, LED-Camera VLC has attracted substantial attention recently. While such systems initially used reflected light as the communication media, direct light becomes the dominant media for the purpose of combating interference. Nonetheless, the data rate achievable by direct light LED-Camera VLC systems has hit its bottleneck: the dimension of the transmitters. In this demo, we revisit the reflected light approach and propose a novel modulation mechanism, ReflexCode, which converts the potentially destructive interferences into collaborative transmissions. Essentially, our ReflexCode system codes information by superposing light emissions from multiple transmitters. It combines traditional amplitude demodulation with slope detection to "decode" the grayscale modulated signal, and it tunes decoding thresholds dynamically depending on the spatial symbol distribution. In addition, ReflexCode re-engineers the balanced codes to avoid flicker from individual transmitters. We implement ReflexCode as a prototype and demonstrate that it can achieve a promising throughput.

References

[1]
G. Corbellini, K. Aksit, S. Schmid, S. Mangold, and T. Gross 2014. Connecting Networks of Toys and Smartphones with Visible Light Communication. IEEE Communications Magazine Vol. 52, 7 (2014), 72--78.
[2]
C. Danakis, M. Afgani, G. Povey, I. Underwood, and H. Haas 2012. Using a CMOS Camera Sensor for Visible Light Communication Proc. of the 31th IEEE GLOBECOM Workshop. 1244--1248.
[3]
J. Hao, Y. Yang, and J. Luo 2016. CeilingCast: Energy Efficient and Location-bound Broadcast through LED-Camera Communication Proc. of the 35th IEEE INFOCOM. 1--9.
[4]
P. Hu, P. H. Pathak, X. Feng, H. Fu, and P. Mohapatra 2015. Colorbars: Increasing Data Rate of LED-to-Camera Communication Using Color Shift Keying Proc. of the 11th ACM CoNEXT. 12.
[5]
W. Hu, Z. Huang J. Mao, Y. Xue, K. Bian J. She, and G. Shen 2014. Strata: Layered Coding for Scalable Visual Communication Proc. of the 20th ACM MobiCom. 79--90.
[6]
Y.-S. Kuo, P. Pannuto, K.-J. Hsiao, and P. Dutta. 2014. Luxapose: Indoor Positioning with Mobile Phones and Visible Light Proc. of the 20th ACM MobiCom. 447--458.
[7]
H. Lee, H. Lin, Y. L. Wei, H. I. Wu, H. M. Tsai, and K. Lin. 2015. RollingLight: Enabling Line-of-Sight Light-to-Camera Communications Proc. of 13th ACM MobiSys. 167--180.
[8]
N. Rajagopal, P. Lazik, and A. Rowe 2014. Hybrid Visible Light Communication for Cameras and Low-Power Embedded Devices Proc. of the 1st ACM VLCS. 33--38.
[9]
B. Weir 2012. Driving The 21st Century's Lights. IEEE Spectrum, Vol. 49, 3 (2012).
[10]
Y. Yang 2017. Practical Visible Light Communication System Utilizing LED Sensing Proc. of the 15th IEEE PerCom Workshops. 109--110.
[11]
Y. Yang, J. Hao, and J. Luo 2017natexlaba. CeilingTalk: Lightweight Indoor Broadcast Through LED-Camera Communication. IEEE Transactions on Mobile Computing (to appear) (2017).
[12]
Y. Yang, J. Nie, and J. Luo 2017natexlabb. ReflexCode: Coding with Superposed Reflection Light for LED-Camera Communication Proc. of the 23th ACM MobiCom (to appear).
[13]
R. Zhang, H. Claussen, H. Haas, and L. Hanzo. 2016. Energy Efficient Visible Light Communications Relying on Amorphous Cells. IEEE Journal on Selected Areas in Communications, Vol. 34, 4 (2016), 894--906.

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Published In

cover image ACM Conferences
MobiCom '17: Proceedings of the 23rd Annual International Conference on Mobile Computing and Networking
October 2017
628 pages
ISBN:9781450349161
DOI:10.1145/3117811
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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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 04 October 2017

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Author Tags

  1. collaborative transmissions
  2. grayscale modulation
  3. visible light communication

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  • Demonstration

Funding Sources

  • AcRF Tier 2 Grant

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MobiCom '17
Sponsor:

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MobiCom '17 Paper Acceptance Rate 35 of 186 submissions, 19%;
Overall Acceptance Rate 440 of 2,972 submissions, 15%

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