Wi-Fi stands for Wireless Fidelity. Fidelity: A faithful output. Generally used to connect devices in wireless mode. It is a term that refers to IEEE 802.11 communications Li-Fi stands for Light Fidelity. Uses light instead of radio waves. Uses Visible part of electromagnetic spectrum. Also known as Light based Wi-Fi.

1. Wi-Fi vs Li-Fi
Afaq Mansoor Khan

3. Wi-Fi
● Wi-Fi stands for Wireless Fidelity.
○ Fidelity: A faithful output.
● Generally used to connect devices in wireless mode.
● It is a term that refers to IEEE 802.11 communications

4. How Wi-Fi Works?

5. How Wi-Fi Works?

6. Different Wi-Fi Standards

7. Wi-Fi Network Topologies
● AP based Topology
● Peer to Peer Topology
● Point to Multipoint Bridge Topology

8. AP Based Topology

9. Peer to Peer Topology

10. Point to Multipoint Topology

11. Advantages and Disadvantages
Advantages
● Free of Wires
● Easy Implementation
● Mobility
● Less Cost
Disadvantages
● Limited Capacity
● Limited Availability
● Limited Speed
● Insecure
● Harmful

12. Li-Fi
● Li-Fi stands for Light Fidelity.
● Uses light instead of radio waves.
● Uses Visible part of electromagnetic spectrum.
● Also known as Light based Wi-Fi.

13. How Li-Fi Works?

14. How Li-Fi Overcomes Wi-Fi?
● Capacity
● Efficiency
● Availability
● Security

15. Applications of Li-Fi
● Underwater
● Hospitals & Medicare's
● Aircrafts
● Petrochemical Plants & many more….

17. “When wireless is fully applied the earth will be converted into a huge
brain, capable of response in every one of its parts.”
- Nikola Tesla

18. Any Questions?

19. Thank You! ☺