LiFi is a mobile wireless technology that uses light rather than radio frequencies to transmit data. The technology is supported by a global ecosystem of companies driving the adoption of LiFi, the next generation of wireless that is ready for seamless integration into the 5G core.Li-Fi is wireless communication technology which utilizes light to transmit data and position between devices. The term was first introduced by Harald Haas during a 2011 TEDGlobal talk in Edinburgh

1. Li – Fi- Light Fidelity

2. Li-Fi Specifications
• Light based WI-FI
• LEDs use instead of radio-waves
• LED lamps acts likeWi-Fi modems
• LED lamps can light a room as well as transmit-receive information

3. The Inventor behind Li-Fi
Li-Fi is a Visible Light Communication (VLC), technology developed by a team of
scientists including Dr. Gordon Povey, Prof. Harald Haas and Dr. Mostafa Afgani
at the University of Edinburgh .

4. Need for Li-Fi
• Radio spectrum is congested, but the demand for wireless data doubles each
year
• Highly efficient since LED consumes less energy
• Light waves available everywhere
• Cannot penetrate through walls. Hence data cannot be intercepted

5. Difference Between Wi-Fi & Li-Fi

6. How Li-Fi Works

8. Applications of Li-Fi
Traffic Scenario Lecture/Seminar Hall

9. Home and small office Aircrafts

10. Advantages Of Li-Fi
Data Rate is greater than 1 Gbps
 Average Cost is Low as LED is used
Can be used anywhere, even in RF restricted areas, Since light waves
will not
As light waves cannot penetrate through walls, the data cannot be
intercepted,Thus provides secured communication.
A better and efficient over radio waves.

11. Disadvantages of Li-Fi
Light can’t pass through objects or walls
 Short Range.
A major challenge facing Li-Fi is how the receiving device will
transmit back to transmitter.
High installation cost of theVLC systems.
Interferences from external light sources like sun, light, normal
bulbs, opaque materials.
Presence of light necessary.

12. Thank you