Unidirectional visible light communication and illumination with LEDs

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15 Citations (Scopus)

Abstract

Visible light communication (VLC) with light emitting diodes (LEDs) has attracted interest for interactive and networked lighting control, and consumer infotainment applications. In this paper, we propose an LED system for jointly achieving unidirectional VLC while providing flicker-free illumination. At the transmitter, a redundant run-length limited encoding scheme and multi-level dimming is considered for data transmission, with a wide dimming range. The receiver uses ON-OFF keying and uses the OFF periods for VLC reception. It is allowed to be asynchronous to the transmitter, with a phase offset within a preset range. A key feature of the proposed system is that no dedicated devices are used for transmission/reception, with the LEDs used for these functions. We design a functional prototype of this system and evaluate the communication bit error rate and illumination flicker performance experimentally.

Original languageEnglish
Article number7582461
Pages (from-to)8617-8626
Number of pages10
JournalIEEE Sensors Journal
Volume16
Issue number23
DOIs
Publication statusPublished - 1 Dec 2016

Keywords

  • LED sensing
  • run-length limited coding
  • Visible light communication

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