Articles from "Microelectronics News"

Fraunhofer Group for Microelectronics

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21.11.2011 Category: Technology, Fraunhofer HHI, Short news, Issue 44

Data from an LED ceiling light

 

Data transmission without a disruptive wireless network? Not a problem with “visible light communication” from Fraunhofer HHI. Photo: Fraunhofer HHI
Data transmission without a disruptive wireless network? Not a problem with “visible light communication” from Fraunhofer HHI. Photo: Fraunhofer HHI

Commercially available light-emitting diodes (LEDs) can do more than just generate light. Researchers at the Fraunhofer Heinrich Hertz Institute HHI have succeeded in transmitting broadband data streams within visible light via LED lamps to computers or other end devices that can receive data. “Visible light communication” is the name of this new transmission technology, which has been developed by Fraunhofer HHI scientists jointly with their industry partners Siemens and France Telecom Orange Labs as part of the EU’s OMEGA project.

 

The bandwidth at which data is sent is 100 Mb/s; in the laboratory, rates of up to 800 Mb/s have been achieved. The transmission technology is suitable both for dis-tributing broadband video streams and for bidirectional communication – from Internet usage to video conferencing.

 

There is a large variety of ways in which this wireless optical technology could be used: Wherever WiFi is not desired, such as in hospitals, this technology could provide a viable alternative means of transmitting data without having to install new cables or devices in the building. Other potential applications can be in any place where LED technology is used. Visible light also has the advantage that the light cone makes it obvious how far the data is being distributed and who can access it. The danger of someone tapping into your data without visual contact is therefore almost impossible.

 

Contact:
Dr. Gudrun Quandel
Phone +49 30 31002-400
gudrun.quandel(at)hhi.fraunhofer.de
Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute HHI
Einsteinufer 37
10587 Berlin
Germany
www.hhi.fraunhofer.de