Light-Fidelity (Li-Fi): Transmission of Data through Light of Future ...
Li-Fi Vs. Wi-Fi (Light Fidelity Vs. Wireless Fiedlity)
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Transcript of Li-Fi Vs. Wi-Fi (Light Fidelity Vs. Wireless Fiedlity)
Wi-Fi vs Li-Fi
Presented By:
Abhishek Shukla(SE ETRX)
Datta Meghe College Of Engineering
• Uses Radio Waves.
• Maximum speed: 1Gb/s.
Wi-Fi
• Uses Light waves.
• Maximum speed 10Gb/s.
Li-Fi
What is 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.
How Wi-Fi works?
ISP
Computers
Wi-Fi Router
Mobiles Any Wireless Device
How Wi-Fi Works?
Different Wi-Fi standards
IEEE 802.11 a Introduced in 1999.
Frequency: 5 GHz.
Range : 10m.
Speed: 54 Mbits/s.
IEEE 802.11 b
Introduced in 2001.
Frequency: 2.4 GHz.
Range : 50 m.
Speed: 11 Mbits/s.
IEEE 802.11 g Introduced in 2003.
Frequency: 2.4 GHz.
Range : 75 m.
Speed: 54 Mbits/s
IEEE 802.11 n Introduced in 2007.
Frequency: 2.4 GHz & 5 GHz.
Range : 100-150 m.
Speed: 300 Mbits/s.
IEEE 802.11 ac
Introduced in 2013.
Frequency: 5 Ghz.
Range: 150 m.
Speed: 1 Gbits/s.
Wi-Fi network topologies AP based topology.
Peer-to-peer topology.
Point to multipoint bridge topology.
AP based technology
Peer-to-peer Topology
Point to multipoint Topology
Advantages• Free of wires.
• Easy Implementation.
• Mobility.
• Cost is less.
Disadvantages• Limited Capacity.
• Limited Availability.
• Limited Speed.
• Insecure.
• Harmful.
Electromagnetic Spectrum
What is 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.
Harald Hass
How Li-Fi works?
How Li-Fi overcomes Wi-Fi
CAPACITY EFFECIENCY
AVAILABILTY SECURITY
Applications• Underwater.
• Hospitals & Medicare's.
• Aircrafts.
• Petrochemical Plants & many more….