LI-FI

November 3, 2013

Scientists have been pushing 10 Gigabit/second worth of data through a single rgb led. This is transmission without as little of interference as possible but interesting as is shows us another area for potential interference.

More information:

http://www.bbc.co.uk/news/technology-24711935
http://up-vlc.photonics.ac.uk/Background/tabid/2186/Default.aspx

They have been using Ortogonal frequency-devision multiplexing whereby several fast wavelength are combined to be carried over a quite slow carrier wave. An LED can only be switched in millisecond realm and therefor wouldn’t be able to transmit 10 Gbit/sec. worth of data without the help of deep look into the maths toolbox.

Unfortunately all this too fast to see for our eyes and too fast to hear the frequency changes. For us is would appear just to be a normal little light. Wonder if we could slow the process down…