• Introduction of li-fi•Genesis of li-fi•Present scenario•Issues with radio waves and light waves•Principal of li-fi Technology•Visible light communication•Working of li-fi technology•Comparisons between li-fi and Wi-Fi•Future applications•Conclusion•References

LI FI- LIGHT FIDELITY TECHNOLOGY

transmission of data through illumination, that is sending data through a LED light bulb that varies in intensity faster than human eye can follow.

•Invented by German physicist HARALDHAAS ,from the university of Edinburgh, U.K•He demonstrated it in the year 2012

HARALD HAAS

1.4 Million 5 Billion

Issues with radio waves and light waves

• The on-off activity of LEDs enables a kind of datatransmission using binary codes.

• Switching on an LED is a logical ‘1’;switching it offis a logical ‘0’.

• A light sensitive device (photo detector) receives thesignal and converts it back into original data.

Sending of data

Illustration of data transfer in Li-Fi

An Environment of li-fi

Petroleum and chemical plants

Petroleum and chemical plants Hospitals (in new medical

instruments)

• Li-Fi Technology is an emergingtechnology and it overcomes many flaws oftraditional Wi-Fi.• However, there are some drawback inthis technology and according to research ,they will overcome in the future.

1. New epoch of wireless communication: light fidelity

Authors: Megha Goyal, Dimple Saproo, Asha Bhagarshra,

Journal: International Journal of Innovative Research in Computer

and Communication Engineering ISSN/EISSN: 23209798 23209801

Year:2013 Volume: 1 Issue: 2

http://ijircce.com/upload/2013/april/52_New%20Epoch.pdf

2. Li-Fi (Light Fidelity)-The future technology In Wireless

communication

http://www.ripublication.com/ijaer.htm

3. Harald Haas, ‘Wireless data from every light bulb’, TED Global,

Edinburgh, July 2011.

4. en.wikipedia.org/wiki/visible_light_communication

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