Visible light communication
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This technology helps in data transferring through visible lights.
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Visible light communication
- 2. Introduction Motivation History Technology and modulation VLC Characteristics VLC vs. RF Characteristics Advantages & Disadvantages Applications Conclusion
- 5. ~ 800 B.C. 405 B.C. 280 B.C. 1800s 1880 1900s Current Photophone Sunlight Heliograph By Bell Beacon Pharos Burning Kite Fire Fire Lighthouse In Battle Ship-to-ship Traffic Light Lamp Comm. /Signboard Light LED VLC
- 6. Modulation Light Data (PPM/FSK) source Demodulation Data (PPM/FSK) PD or CCD
- 7. 2003 100 LED 2005 10 LED Cost / Brightness ratio 2010 LED 1 Halogen Lamp Fluorescent Lamp 2015 Incandescent LED Lamp 0 50 100 150 Brightness / Power ratio
- 8. 480M UWB 100M 50M 802.11a UFIR Data rate (bps) 802.11b 16M VLC 4M FIR Bluetooth 115 VI K IR ZigBee 1 2 3 6 1 2 5 Distance (m) 1 0 0
- 10. Property VLC RF Visibility Yes No Bandwidth Unlimited, Regulatory, BW 400nm~700nm Limited EMI No High Hazard No Yes Power Relative low Medium Consumption Coverage Distance Short Medium