Light Fidelity (Li-Fi)

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Li-Fi

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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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Introduction

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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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Technology

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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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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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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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Application - Intelligent Transportation Systems

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Application - Intelligent Transportation Systems

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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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