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Li fi technology
- 1. LI-FI TECHNOLOGY Roll no : 38 Name : Urvi Parekh
- 2. Points To Be Covered
- 3. What Is Li-Fi Technology • Li-fi is an abbreviation of Light fidelity. • It is a technology for wireless communication between devices using light to transmit data. • Basically it is a transmission of data through illumination, i.e. sending data through a LED light bulb that varies in intensity faster than a human eye can follow.
- 4. History
- 5. How It Works? • Operational procedure is very simple. • If LED is ON , digital data ‘1’ is transmitted and if LED is OFF , digital data ‘0’ is transmitted. • LEDs varies in intensity so fast that a human eye cannot detect it. • A controller connected at the back side of these LEDs is used to code data. • Also called as 5G optical communication.
- 7. Li-Fi V/s Wi-Fi CHARCTERISTIC LI – FI WI – FI Operations Transmits the data using LED bulbs . Transmits the data through radio waves through wi-fi routers DataTransfer Speed Above 1 Gbps Generally above 150 Mbps Cost Low High Range Depends on Light range Around 100 meters Secure Its is more secured than wi-fi It is less secure than li-fi Power Consumption low high Interference It is less and can pass through underwater , airplanes easily It is more and cannot pass through underwater , airplanes easily.
- 8. APPLICATIONS
- 10. • Hospital Many treatments now involve multiple individuals, Li- Fi system could be a better system to transmit communication about the information of patients . Besides providing a higher speed, light waves also have little effect on medical instruments and human bodies • Home and Office automation It is predicted that future home and building automation will be highly dependent on the Li-Fi technology for being secure and fast. As the light cannot penetrate through walls, the signal cannot be hacked from a remote location.
- 11. Limitations
- 12. Future Scopes • As the amount of available bandwidth is limited, the airwaves are becoming increasingly clogged, making it more and more difficult to get a reliable, high-speed signal.The LI-FI technology can solve this crisis. • Moreover, it will allow inter access in places such as operation theatres and aircrafts where internet access is usually not allowed. • If this technology can be used efficiently, we might soon have something of the kind ofWI-FI hotspots wherever a light bulb is available. It will be a Bright future.
- 13. Conclusion • LI-FI is an emerging technology and hence it has vast potential. • We can higher speed at lower cost . • It is simpler faster and efficient wireless data communication with some barriers to overcome.
- 15. THANKYOU
Editor's Notes
- On 12th July 2011 .He used a table lamp with an LED bulb to transmit a video of blooming flowers that was then projected onto a screen behind him. During the event he periodically blocked the light from lamp to prove that the lamp was indeed the source of incoming data.