Just imagine the following scenario: four people are comfortably ensconced in a room. Each one of them can watch a film from the Internet on his or her laptop, in HD quality.
This is made possible thanks to optical WLAN. Light from the LEDs in the overhead lights serves as the transfer medium.
For a long time, this was just a vision for the future. However, since scientists from the Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute HHI in Berlin, Germany, have developed this possibility into reality.
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