Ultra high-speed communication using LED light "Li-fi" enables future 10Gbps communication

BySuicine

Public wireless LAN services are becoming available everywhere in the city, but apart from such communication standards of the radio, a new ultra high-speed communication standard enabling super high-speed communication using LED bulbs "Li-fi"Is being promoted as a joint venture of several universities in the UK.

BBC News - 'Li-fi' via LED light bulb data speed breakthrough
http://www.bbc.co.uk/news/technology-24711935

"Li-fi"University of Edinburgh,St. Andrews University,Strathclyde University,Oxford University,Cambridge UniversityAs a research on joint venture projects,EPSRC(Physical Science Research Committee). Researchers are asking questions about the primary colors of red, green, and blueMicro LED"We construct a white light using a micro-unit LED bulb called" Successful data transfer at 3.5 Gbps speed ".

ByMike Deal aka Zone Dancer

For high-speed communication using Micro LED bulbs,Orthogonal Frequency Division Multiplexing(OFDM) is adopted. As a mechanism, you can transmit thousands of binary data chunks at once by blinking the LED light at high speed, so it is possible to transmit a large amount of data at once at ultra high speed.



"Pure VLCMr. Harald Haas, who established a company developing Li-fi technology (VLC), said in 2011 that it will transmit high-quality moving images to computers using signal processing technology using LED bulbsDemonstration done. The electromagnetic spectrum of visible light is 10,000 times more powerful than radio waves, and it will become ultra high-speed communication standard with excellent energy efficiency.


Furthermore, since Li-fi can be used by filling LED bulbs in buildings etc. at regular intervals, it is possible to provide a stable net environment by modifying already existing infrastructure and light can not penetrate the wall Mr. Haas insists that it becomes a more secure communication standard than the conventional Wi-Fi.