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Presented by

MILTON JAMES

What is Li-Fi?

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Light Based Wi-Fi

Transfer data through illumination

Speed greater than 1o Gbps

HISTORY OF LI-FI1990

• 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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Li-1st

First Li-Fi product

Speed up to 5mbps

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Li-Flame

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Make LED bulbs into wireless access points

Help you to move between light source without losing connection

Let there be light………

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Estimated Li-Fi market of $6billion by 2018

Opportunity for seeding a new industry

Visible light communication

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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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Technology overview

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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

Li-Fi construction

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Bulb

RF power amplifier circuit(PCB)

Printed circuit board(PCB)

Enclosure

Figure Of construction

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Comparison between Li-Fi and Wi-Fi

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• GigaHot spots

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Models for In House Communication

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MODEL OF GIGA HOT SPOTS

Giga Broadcasting

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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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Applications of Li-Fi

• Medical field

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• Traffic light

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• At office room

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• At Lecture Halls

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• Inside Aircraft

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• Public Li-Fi Hotspots

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• Smarter power plants

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• Undersea Awesomeness

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Advantages Of Li-Fi

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Solve insufficiency of radio frequency

Speed

Secure

Low cost

Safe to human

Multi user communication

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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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?????

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)