visible light communication
DESCRIPTION
NOW A DAYS VISIBLE LIGHT COMMUNICATION IS MORE POPULAR. The visible light communication (VLC) refers to the communication technology which utilizes the visible light source as a signal transmitter, the air as a transmission medium, and the appropriate photodiode as a signal receiving component.Visible light is thus by definition comprised of visually-perceivable electromagnetic waves. The visible spectrum covers wave lengths from 380 nm to 750 nm. The Visible Light Communications Consortium (VLCC) which is mainly comprised of Japanese technology companies was founded in November 2003. It increases the data speed compared to any communication PositionTRANSCRIPT
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Paper Presentation on Visible Light Communication BY Mahesh Naga Kumar
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CONTENTS
I. What is VLCII. Visible light & SpectrumIII. Indoor VLC scenarioIV. HistoryV. VLC processVI. -TransmitterVII. -ReceiverVIII. VLCCIX. Comparison with RFX. Applications
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What is VLC..???
The visible light communication (VLC) refers to the communication technology which utilizes the visible light source as a signal transmitter, the air as a transmission medium, and the appropriate photodiode as a signal receiving component.
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Visible Light :-
Visible light is thus by definition comprised of visually-perceivable electromagnetic waves. The visible spectrum covers wave lengths from 380 nm to 750 nm.
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Different wavelengths for different LEDS:
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Visible Light Spectrum
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History of VLC
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VISIBLE LIGHT COMMUNICATION PROCESS
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Transmitters:-
•LED
•Fluorescent Light
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Receiver:-
•Photodiode
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LED Technical Evolution
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Indoor VLC Scenario
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VISIBLE LIGHT COMMUNICATIONS CONSORTIUM(VLCC)
The Visible Light Communications Consortium (VLCC) which is mainly comprised of Japanese technology companies was founded in November 2003. It increases the data speed compared to any communication
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VLC CHARACTERISTICS
•Human Safety•High Data Rate•Bandwidth•Security•Visibility•Unlicensed Spectrum
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VLC vs RF Communication
•Limited Transmission Power•Regulated Spectrum:•Banned in Sensitive Areas
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Applications of VLC
• Position Detection•Intelligent Transport System• Image Sensor Communications• Networking• Audio Applications
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CONCLUSION
•LED can be used not only for lighting thehomes but also as means for wireless in-house communication.After few years the VLC is become more popular
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ANY QUERIES