Abstract
We consider a visible light communication (VLC) system with light emitting diodes (LEDs), wherein LEDs are used for information transmission as well as reception while providing illumination. At the transmitter, a combination of a pulse width modulation (PWM) signal and a redundant run-length limited encoded on-off keying (OOK) signal is used for data transmission. The LED receiver uses OOK and the OFF periods therein for VLC reception. The range of such a system is however affected by ambient light changes and device portability. To address this problem, we propose a two-step decoder with edge detection followed by K-means clustering and adaptive threshold detection. We show that the proposed system achieves about 33% higher range in comparison to a non-adaptive VLC system.
Original language | English |
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Title of host publication | IEEE SENSORS 2017 - Conference Proceedings |
Publisher | Institute of Electrical and Electronics Engineers |
Pages | 1-3 |
Number of pages | 3 |
ISBN (Electronic) | 9781509010127 |
DOIs | |
Publication status | Published - 21 Dec 2017 |
Event | 16th IEEE SENSORS Conference, ICSENS 2017 - Glasgow, United Kingdom Duration: 30 Oct 2017 → 1 Nov 2017 |
Conference
Conference | 16th IEEE SENSORS Conference, ICSENS 2017 |
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Country/Territory | United Kingdom |
City | Glasgow |
Period | 30/10/17 → 1/11/17 |
Keywords
- LED sensing
- VLC receivers