Introduction to Li-Fi Technology altenative to wi-fi.pptx

Introduction to Light Fidelity Technology.

1. D.K.T.E’s Textile & Engineering Institute Ichalkaranji, Dist. Kolhapur (Maharashtra) INDIA 8/10/2022 1

2. Date: 10 August 2022 2 D.K.T.E. SOCIETY’s TEXTILE & ENGINEERING INSTITUTE, ICHALKARANJI (An Autonomous Institute) Department of Electronics Engineering 2022-2023 Presentation on: Introduction to Green IT Light Fidelity Technology Under the Guidance of: Prof. A. V. Shah Name of Student: Kaushik Vishwas Kulkarni PRN NO: 19UEL041

3. What is Light Fidelity Technology….? LIGHT FIDELITY ” is transmission of data through illumination. i .e. sending data through a LED light bulb that varies in intensity faster than human eye can follow. Light Fidelity is a light based WI-FI it uses light instead of radio waves to transmit information .

4. History The technology truly began during the year 1990’s in countries like Germany , Korea and Japan. Prof. Harald Hass from university of Edinburgh. He demonstrated in year 2012

5. How Light Fidelity Technology Works Operational procedure is very simple , if the LED is on, it transmit a digit 1,if its off you transmit a digit 0. The LED’s can be switched on and off quickly, which gives nice opportunities for transmitting data. Hence all that us required is some LEDs and a controller that code data into those LEDs. We have to just vary the rate at which the LEDs flicker depending upon the data we want to encode. Thus every light source will work as a hub for data transmission.

6. L IFI/WIFI Comparison parameter LI-FI WIFI Speed High High Range Low Medium Data density High Low Security High Medium Transmit/receive power High Medium Device-to-device connectivity High High Reliability Medium Medium

7. A pplication Used for modern medical instruments. In aircrafts, it can be used for data transmission Location based services- GPS Underwater Communication RF Spectrum relief LI-FI can be used effectively in the effectively in the places where it is difficult to lay optical fiber cable.

8. Advantages Larger bandwidth High Efficiency High Security No licence needed Green information technology Lighting points used as Hotspots This technology worldwide can be used for every street lamp would be a free data access points

9. Limitations LI-FI doesn’t work in the dark Unlike WIFI we cannot move to other rooms unless there are wired bulbs too. Light can’t pass through the objects High installation cost of the VLC systems A major challenge facing LI-FI is how the receiving device will transmit back to transmitter.

10. Future Developments Efficient alternative to radio based wireless LI-FI is an emerging technology which is quick and reliable Air Waves are clogged so let’s use light waves

11. conclusion Overcomes the limitations of radio spectrum High speed of 10Gbps can be achieved We will proceed towards the cleaner, greener, safer and brighter future. LI-FI is enabled by advance digital transmission technologies.

12. Reference ALL ABOUT ELECTRONICS You-Tube “ Li-Fi Explained” https://youtu.be/Cd8G9d-Begs Wikipedia “What is L-Fi Technology” https://en.wikipedia.org/wiki/Li-Fi Renu - Research Scholar, MDU, Rohtak, India. “Praxis of Light Fidelity (LI-FI) and their Applications in Digital Library System: a Conclusive Approach” Chromeextension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.ripublication.com/ijitls18/ijitlsv7n1_01.pdf Li-Fi Consortium “Next generation optical wireless communication technology” https://www.lifitn.com/im-new