Light Fidelity (Li-Fi)

1. Li-Fi
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2. Introduction
 Li-Fi (Light Fidelity) is a fast, cheap kind of transition of data through
light.
 It’s a Visible Light Communication.
 Since it’s just light, it can be safely implemented in sensitive areas
such as airplanes and hospitals.
 It can reach places Wi-Fi can’t reach like underwater.
 It can be implemented even in highways, since highways have lights.
 It more secure than Wi-Fi since the signal isn’t traveling, it is from the
light directly above you.
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3. Introduction
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4. Working Technology
 It’s very simply, if the LED is on, you transmit a digital 1, if it’s off you
transmit a 0, they can be switched on and off too fast.
 Light fluctuate too fast, that human eye can not notice.
 It can be any type of light.
 One side (Sender) has an LED lamp for data transmission, the other
side (Receiver) has a photodetector which transfer light signal into
data and send it to client.
 VLC data rate can be expanded by parallel information transmission
utilizing LED series where every LED transmits an alternate information
stream.
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5. Technology
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6. Application - Augmented Reality
 Using the light of a museum for example, you can provide information about
the item being watched
 Let us say that you are watching a painting in some museum, the light exactly
above the painting can provide information about it.
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7. Application - Localized Advertising
 Using light in the shopping mall, you can provide information about offers, or
you can provide a catalogue to customers, you can provide discount coupons,
or even the mall map.
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8. Application - Intelligent Transportation
Systems
 Li-Fi offers the possibility of car to car communication using headlights and
tails.
 This will allows us to develop anti-collision system, and exchange driving
condition between cars.
 Li-Fi also offers the possibility of making city wide traffic management system
using traffic signals, which will give the car information about best way to take
and more
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9. Application - Intelligent Transportation
Systems
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10. Application - Intelligent Transportation
Systems
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11. Application - Medical Application
 Li-Fi offers the possibility of providing high speed internet in the most
sensitive rooms of the hospital, which doesn’t allow Wi-Fi or cellular data
before.
 Since the light is part of the rooms there will be no more radiation, and it will
not cause any interference with medical equipment.
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12. Thank You
 Thank You For listening
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