Lifi ppt
- 3. CONTENT • INDRODUCTION • HISTORY • HOW LIFI WORKS? • REAL TIME USAGE OF LIFI • HOW IT WORKS? • WIFI VS LIFI • APPLIOCATIONS • ADVANTAGES • DISADVANTAGES • CONCLUSION
- 4. INTRODUCTION • Lifi Is A Wieless Optical Networking Technology That Uses Light-emitting Diodes (Leds) For Data Transmission. • Lifi Is Designed To Use Led Light Bulbs Similar To Those Currently Use In Many Energy-concious Homes And Offices. • However, Lifi Bulbs Are Outfitted With A Chip That Modulates The Light Imperceptibly For Optical Data Transmission. • Lifi Data Is Transmitted By The Led Bulbs And Received By Photoreceptors.
- 5. HISTORY • Professor Harald Haas, From The University Of Edinburgh In The Uk, Is Widely Recognised As The Original Founder Of Li- fi. • He Coined The Term Li-fi And Is Chair Of Mobile Communications At The University Of Edinburgh And Co- Founder Of Pure Lifi. • He Has Promoted This Technology In His 2011 Ted Global Talk And Helped Start A Company To Market It. • In October 2011, Companies And Industry Groups Formed The Li-fi Consortium, To Promote High-speed Optical Wireless System. • The First Li-fi Smartphone Prototype Was Presented At The Consumer Electronics Show In Las Vegas From January 7–10 In 2014.
- 6. HOW IT WORKS
- 7. REAL TIME USAGE OF LIFI ENVIRONMENT
- 8. HOW IT IS DIFFERENT ? • Li-fi Technology Is Based On Leds For The Transfer Of Data. • The Transfer Of The Data Can Be With The Help Of All Kinds Of Light, No Matter The Part Of The Spectrum That They Belong. • That Is, The Light Can Belong To The Invisible, Ultraviolet Or The Visible Part Of The Spectrum
- 9. WIFI VS LIFI • Li-fi Can Be Thought Of As A Light-based Wi-fi. That Is, It Uses Light Instead Of Radio Waves To Transmit Information. • Instead Of Wi-fi Modems, Li-fi Would Use Transceiver-fitted Led Lamps That Can Light A Room As Well As Transmit And Receive Information. • Wi Fi Is Great For General Wireless Covrage Within Building And Li Fi Is Ideal For High Density Wireless Date Coverage In Confined Area And For Relieving Radio Interference Issues. • So The Two Technologies Can Be Considered Complimentary
- 10. APPLICATIONS •You Might Just Live Longer •Airlines •Smarter Power Plants •Undersea Awesomeness •It Could Keep You Informed and Save Lives
- 11. ADVANTAGES OF LIFI • Li-Fi can solve problems related to the insufficiency of radio frequency bandwidth because this technology uses Visible light spectrum that has still not been greatly utilized. • High data transmission rates of up to 10Gbps can be achieved. • Since light cannot penetrate walls, it provides privacy and security that Wi-Fi cannot. • Li-Fi has low implementation and maintenance costs
- 12. DISADVANTAGES • Light can't pass through objects. • A major challenge facing Li-Fi is how the receiving device will transmit back to transmitter. • High installation cost of the VLC systems. • Interferences from external light sources like sun, light, normal bulbs, opaque materials.
- 13. CONCLUSION • The Possibilities Are Numerous And Can Be Explored Further. • If His Technology Can Be Put Into Practical Use, Every Bulb Can Be Used Something Like A Wi-fi Hotspot To Transmit Wireless Data And We Will Proceed Toward The Cleaner, Greener, Safer And Brighter Future.
- 14. Thank You