It is a light based new emerging technology.

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Presented by
MILTON JAMES

2. What is Li-Fi?
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Light Based Wi-Fi
Transfer data through illumination
Speed greater than 1o Gbps

3. HISTORY OF LI-FI
1990
• Birth Of Li-Fi Technology
2010
• D-Light project kicked off
2011
• Harald Haas introduced Li-Fi
• Development of Li-Fi Consortium
2013
• It was reported Chinese manufactures were working on li-fi
2014
• Russian company Stins Coman announced the development of BeamCaster
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4. Li-1st
First Li-Fi product
Speed up to 5mbps
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5. Li-Flame
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Make LED bulbs into wireless access points
Help you to move between light source without losing
connection

6. Let there be light………
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Estimated Li-Fi market of $6billion by 2018
Opportunity for seeding a new industry

7. Visible light communication
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8. Why Visible Light…..
• Requires radio circuits , antennas and complex receivers
• Less secure and limited band width
Communication using radio
waves
• Simply very dangerous and can’t be used for our purpose of
communicationGamma rays
• Good in hospital onlyX-rays
• Dangerous for human bodyUltra violet rays
• Bad for eyes used only with low powerInfra Red
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9. Technology overview
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10. Working technology
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A high brightness LED Bulb
A Silicon photodiode
The main components are

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Simple working

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Working Of Li-Fi

13. Li-Fi construction
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Bulb
RF power amplifier circuit(PCB)
Printed circuit board(PCB)
Enclosure

14. Figure Of construction
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15. Comparison between Li-Fi and Wi-Fi
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16. • GigaHot spots
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Models for In House Communication

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MODEL OF GIGA HOT SPOTS

18. Giga Broadcasting
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19. Luciom’s technology
Helps to enable Li-Fi in smart phones and laptops
Technology turns LED light sources into positioning beacons
Gyro sensors to identify position of user
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20. Applications of Li-Fi
• Medical field
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21. • Traffic light
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22. • At office room
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23. • At Lecture Halls
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24. • Inside Aircraft
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25. • Public Li-Fi Hotspots
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26. • Smarter power plants
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27. • Undersea Awesomeness
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28. Advantages Of Li-Fi
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Solve insufficiency of radio frequency
Speed
Secure
Low cost
Safe to human
Multi user communication

29. Disadvantages of Li-Fi
You cannot dim light
There will be interference from other light source
You must have line-of-sight
You need special LED
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30. Conclusion
• The possibilities are numerous and can be explored further.
• We can make every light source into data access points
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ANY
QUESTIONS?????

32. Thank You
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Presented by
MILTON JAMES
Under Guidance of
1. Miss . Maria K Tom
(Lecturer in computer)
2. Miss Neethu Mohan
(Lecturer in computer)