Flicker mitigation in dimmed LEDs installed indoors using vDSM digital dimming technique under visible light communication

In this work, we have presented a general framework to construct dimmable transmission scheme at fixed dimming percentage. We have explored the adoption of variable delta-sigma modulation to dim the LEDs installed with flicker mitigation under intensity control in Visible light communication technol...

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Bibliographic Details
Published in:Optical and quantum electronics 2020-02, Vol.52 (2), Article 77
Main Authors: Vijayalakshmi, B. Anitha, Nesasudha, M.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Computer Communication Networks
Dimming
Electrical Engineering
Flicker
Lasers
Light emitting diodes
Luminous intensity
Modulation
Optical communication
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Pulse duration
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Summary:In this work, we have presented a general framework to construct dimmable transmission scheme at fixed dimming percentage. We have explored the adoption of variable delta-sigma modulation to dim the LEDs installed with flicker mitigation under intensity control in Visible light communication technology. The dimming can be accomplished by adjusting the flow of average current in the LEDs through pulse width based modulation schemes. The experimental results have demonstrated the dimming capability of the proposed scheme with duty cycle regulation.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-020-2201-5