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Li-Fi Technology For Efficient Networking

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Sourav Tamli

This document presents an overview of Li-Fi technology for efficient networking. It discusses the history of Li-Fi, which was coined in a 2011 TED Talk. It describes the basic components of a Li-Fi system including a transmitter, receiver, and processing unit. The document compares Li-Fi to Wi-Fi in terms of operation, speed, security and other factors. It outlines advantages of Li-Fi such as high capacity and availability. Potential applications are also mentioned, from education to traffic management. While Li-Fi does not penetrate walls, it could replace Wi-Fi by making use of existing light sources.

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Li-Fi Technology For Efficient Networking Presented By : Sourav Tamli(Roll-52) & Subhadeep Biswas(Roll-54) Mentor : Prof. Paritosh Basu
Contents  Introduction.  History.  Construction of a Li-Fi System.  Working principle  Li-Fi vs Wi-Fi  Problems in Wi-Fi  Advantages & Disadvantages  Applications  Future Scope  Conclusion  References
Introduction What is Li-Fi ?
History  Harald Haas, form University of Edinburgh in the UK, coined the term "Li-Fi" at his TED Global Talk where he introduced the idea of "Wireless data from every light".  The general term Visible Light Communication (VLC), whose history dates back to the 1880s, includes any use of the visible light portion of the electromagnetic spectrum to transmit information .
Construction Of a Li-Fi System  Transmitter  Receiver  Processing
Working principle
Li-Fi vs Wi-Fi  Operation  Application  Privacy  Data Transfer Speed  Frequency Of Operation  Data density  Coverage distance  System components
Problems in Wi-Fi  Limitation  Efficiency  Availability  Security
Applications  Education systems  Medical applications  Cheaper internet in aircrafts  Under water applications  Disaster management  Applications in sensitive areas  Traffic management
Advantages & Disadvantages  Advantages Capacity : Light has 10000 times longer bandwidth than radio –waves Efficiency: Data transmission using Li-Fi is very cheap. Availability: Availability is not an issue as light sources are present everywhere Security: Light waves do not penetrate through walls.  Disadvantages  One of the major demerits of this technology is that the artificial light cannot penetrate into walls and other opaque materials which radio waves can do. So a Li-Fi enabled end device (through its inbuilt photo-receiver) will never be as fast and handy as a Wi-Fi enabled device in the open air. Also, another shortcoming is that it only works in direct line of sight.
Future Scope  As light is every where, and free to use , possibilities increases to a great extent of the use of Li-Fi technology. If this technology comes to practice each Li-Fi bulb will be used as Wi-Fi hotspot to transmit wireless data. As the Li- Fi technology will be used which will lead to a cleaner, greener , safer and bright future and environment. The concept of li-fi is attracting many people as it is free to use without any license and faster means of data transfer. If it develops more faster people will more and more use this technology instead of Wi-Fi.
Conclusion  It has a bright chance to replace the traditional Wi-Fi because as an ever increasing population is using wireless internet, the airwaves are becoming increasingly clogged, making it more and more difficult to get a reliable, high- speed signal.  This concept promises to solve issues such as the shortage of radio-frequency bandwidth and boot out the disadvantages of Wi-Fi .  Hence the future applications of the Li-Fi can be predicted and extended to different platforms and various walks of human life.
References  https://en.wikipedia.org/wiki/Li-Fi  http://purelifi.com/what_is_li-fi/  http://www.lifi-centre.com/about-li-fi/what-is-li-fi- technology/
Thank You….

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Li-Fi Technology For Efficient Networking

  • 1. Li-Fi Technology For Efficient Networking Presented By : Sourav Tamli(Roll-52) & Subhadeep Biswas(Roll-54) Mentor : Prof. Paritosh Basu
  • 2. Contents  Introduction.  History.  Construction of a Li-Fi System.  Working principle  Li-Fi vs Wi-Fi  Problems in Wi-Fi  Advantages & Disadvantages  Applications  Future Scope  Conclusion  References
  • 4. History  Harald Haas, form University of Edinburgh in the UK, coined the term "Li-Fi" at his TED Global Talk where he introduced the idea of "Wireless data from every light".  The general term Visible Light Communication (VLC), whose history dates back to the 1880s, includes any use of the visible light portion of the electromagnetic spectrum to transmit information .
  • 5. Construction Of a Li-Fi System  Transmitter  Receiver  Processing
  • 7. Li-Fi vs Wi-Fi  Operation  Application  Privacy  Data Transfer Speed  Frequency Of Operation  Data density  Coverage distance  System components
  • 8. Problems in Wi-Fi  Limitation  Efficiency  Availability  Security
  • 9. Applications  Education systems  Medical applications  Cheaper internet in aircrafts  Under water applications  Disaster management  Applications in sensitive areas  Traffic management
  • 10. Advantages & Disadvantages  Advantages Capacity : Light has 10000 times longer bandwidth than radio –waves Efficiency: Data transmission using Li-Fi is very cheap. Availability: Availability is not an issue as light sources are present everywhere Security: Light waves do not penetrate through walls.  Disadvantages  One of the major demerits of this technology is that the artificial light cannot penetrate into walls and other opaque materials which radio waves can do. So a Li-Fi enabled end device (through its inbuilt photo-receiver) will never be as fast and handy as a Wi-Fi enabled device in the open air. Also, another shortcoming is that it only works in direct line of sight.
  • 11. Future Scope  As light is every where, and free to use , possibilities increases to a great extent of the use of Li-Fi technology. If this technology comes to practice each Li-Fi bulb will be used as Wi-Fi hotspot to transmit wireless data. As the Li- Fi technology will be used which will lead to a cleaner, greener , safer and bright future and environment. The concept of li-fi is attracting many people as it is free to use without any license and faster means of data transfer. If it develops more faster people will more and more use this technology instead of Wi-Fi.
  • 12. Conclusion  It has a bright chance to replace the traditional Wi-Fi because as an ever increasing population is using wireless internet, the airwaves are becoming increasingly clogged, making it more and more difficult to get a reliable, high- speed signal.  This concept promises to solve issues such as the shortage of radio-frequency bandwidth and boot out the disadvantages of Wi-Fi .  Hence the future applications of the Li-Fi can be predicted and extended to different platforms and various walks of human life.
  • 13. References  https://en.wikipedia.org/wiki/Li-Fi  http://purelifi.com/what_is_li-fi/  http://www.lifi-centre.com/about-li-fi/what-is-li-fi- technology/