nyc info

6.  Li-fi means “LIGHT FIDELITY”.
 LI-FI is transmission of data through illumination,i.e
sending data through a LED light bulb that varies in
intensity faster than human eye can follow
 It is fast and cheap optical version of wi fi,based on
visible light communication(VLC).

7. This technology was invented by German
Physicist “HARALD HASS”, from the
university of Edinburgh, U.K.
He demonstrated it in the
Year 2012
UNIVERSITY OF EDINBURGH:[
:

8. PRINCIPLES
OF
LI FI

9. 1101011110001010101001

10. 1101011110001010101001
1101011110001010101001
1101011110001010101001
1101011110001010101001
1101011110001010101001
1101011110001010101001
1101011110001010101001

11. HOW
LI FI
WORKS?

12. LED on
1 0 1 0 1
LED off

13. TM

17. need
of
li fi

22. WI FI10 Gbps 150 Mbps

23. WI FI
LIGHT RADIOWAVES

24. WI FI
10,000 times
greater
spectrum
Less
spectrum
range

25. WI FIUses power
efficiently
Radio base
stations
require lot of
energy

26. WI FI
Led s should be
available
Radiowaves
have certain
limitations

27. WI FIHigher Less

30. EFFICIENCY
AVAILABILITY SECURITY

31. Li Fi technology is still in its infancy .However
some areas where it seems perfectly applicable
are:-
STREET LIGHTS

38. FUTURE
OF
LI FI ?