Lifi technology ppt
- 1. By G Durga Prasanth - 12M11A0506 K Chinna Sai - 12M11A0515 SEMINAR ON Technology
- 2. What is Li-Fi ? Invention Why only VLC Design Perspective Working Sample Applications Li-fi vs Wi-fi Li-fi Environment Advantages Disadvantages References Conclusion
- 3. I-Fi Means “Light Fidelity”. Li-Fi is transmission of data through illumination, i.e., sending data through a LED bulb that varies in intensity faster than human eye can follow It is Fast and cheap Optical Version of Wi-Fi, based on VLC- Visible Light Communication
- 4. Li-Fi Technology Was Invented By A German Physicist HARALD HAAS He demonstrated it in the year 2012
- 5. Radio Waves Infrared Rays Visible Rays Ultra violet Rays X-Rays Gamma Rays Expensive, Less Secure Causes Eye problem Best to Use Effects Human Body Health Issues Dangerous
- 6. STREAMING CONTENT LAMP DRIVER Receiver Dongle Received App Data Photo Detector Amplification & Processing POWER
- 10. Data Transfer upto 1Gbps Nearly 1024 Mbps Data Transfer upto 54Mbps Uses the Visible light portion Uses the Radio wave portion Uses Light as Carrier Uses Radio spectrum Cheaper Expensive
- 14. 10000 times more spectrum than Radio Waves Highly Efficient because LED consumes Less energy. Provides Light as well as Data Simultaneously. Great High Data Transfer. 101111001000 1001010111101 0101011101110 1010111110100 1100111101001 111010110000 101010
- 15. Light can’t pass through objects. High installation cost of VLC systems. Interferences like sun light, external bulb, lights may cause interruption to data transfer from LED Challenge facing LI-FI is how the receiving device will transmit back to transmitter ?
- 16. The possibilities are numerous and can be exploded further. If this technology can be put into practical use, every Bulb can be used something like a Wi-Fi Hotspot