lifi tech
This document presents information on Li-Fi technology. It begins with acknowledgements and an index of the presentation objectives, which include an introduction, working concept, benefits over radio waves, application fields, and conclusions. The presentation then discusses the history of Li-Fi beginning in the 1990s, defines it as transmission of data through illumination of light using LED bulbs, and explains how it works by varying light intensity faster than the human eye can detect to transmit digital 1s and 0s. It highlights reasons for using visible light communication rather than radio waves, including capacity, security and economic benefits. Application fields of Li-Fi are presented, along with the drawback of light obstruction, before concluding with predictions about its future potential.
lifi tech
- 1. Li-Fi Technology Presented by :Bikash kr Bhagat Softwarica College of IT and E-Commerce 01/24/14 Batch:-10c 1
- 2. ACKNOWLEDGEMENT I thank my presentation guide to pramod sir for giving me an suggestion to learn and present this presentation, If not for the above mentioned people my presentation never would have been completed successfully. I once again extend my sincere thanks to all of them. 01/24/14 2
- 3. INDEX OF REPORT OBJECTIVES SN 1. 2. 3. 4. 5 6. 7. 8. 9. 10. 01/24/14 Objectives Name Introduction Working concept Why only VLC ? Issue with radio wave Benefit with light wave Differences between the technologies Application field of Li-Fi Drawbacks Conclusion Reference 3
- 4. History > The technology truly began during the 1990’s in country like Germany, Korea, and Japan where they discovered LED’s could be retrofitted to send information. Harald Hass continues to wow the world with the potential to use light for communication. 01/24/14 4
- 5. What is Li-Fi • Li-Fi is a transmission of data through illumination of light, i.e. sending data through a LED bulb that varies in intensity faster than human eye can follow • Li-Fi - LIGHT FIDEALITY 01/24/14 5
- 6. How Li-Fi Works ? • If the led is on, you transmit a digital 1, if its off you transmit 0. The LEDs can be switched on and off very quickly which gives nice opportunities for transmitting data. 01/24/14 6
- 7. Working Concept Transmitting and receiving element 01/24/14 7
- 8. Why only VLC • VLC – Visual Light Communication 01/24/14 8
- 9. Issue with radio wave CAPACITY >The current system makes use of radio waves SECURITY >These radio waves can easily penetrate through the wals, >With the increasing thus letting number of mobile connections the anonymous users to availability of spectrum use the network. is getting congested. ECONOMIC >Due to the limited availability of the radio waves the tariff rates are relatively costlier. >This can pose >Radio waves forms only a threat if the people small fraction of the entire EM spectrum with bad intentions thus making the start using it. problem even worse. 01/24/14 9
- 10. Benefit with Light waves CAPACITY SECURITY >Light is a readily >It can not pass through any obstacle available form of i.e. wall energy and it covers major portion of EM spectrum >Visible light spectrum is 10000 times more compared to radio wave spectrum. 01/24/14 ECONOMIC >The tariff rates can be very cheep as light waves are a cheap resources. 10
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- 12. Application field of Li-FI 01/24/14 12
- 13. Drawback • Any obstacle can disturb the data transfer which may cause data lose, i.e. Sunlight and colorful light may disturb the communication. 01/24/14 13
- 14. Conclusion •Li Fi will make be a awesome technology driven in near future •With its magic of light it can make our world a greener,safer,cleaner and moreover a brighter place to live. Reference Websites http://www.lifi.com/pdfs/TechBriefHowLIFIWorks.pdf http://www.slideshare.net/anilkumarkaramkanti/li-fi-technology-22587176 http://www.youtube.com/watch?v=CASz5njh6NA
- 15. Any Query??? • Thank you!!! 01/24/14 15