By: MarkJ - 2 August, 2011 (11:31 AM)
LED Light Emitting DiodeGerman scientists working at the Fraunhofer Institute for Telecommunications (Heinrich Hertz Institute) in Berlin have succeeded in developing an 800Mbps (Megabits per second) capable wireless network (WLAN - Wireless Local Area Network) by using nothing more than normal red, blue, green and white LED (Light-Emitting Diode) light bulbs.

It apparently only takes "a few additional components" to turn regular LEDs, which these days can be found in everything from Torches to Christmas tree lights, into an affordable ultrafast wireless network.

The LEDs, which are placed on the ceiling and have a coverage of about 10 square meters, essentially blink on and off extremely fast to transmit the data. This signal can then be picked up by a receiver, which is typically placed anywhere within the coverage radius.

Dr. Anagnostis Paraskevopoulos explained:

"The fundamentals of visible light communication (VLC) were developed together with the industry partners Siemens and France Telecom Orange Labs. [It] means that we [can transfer] four videos in HD quality to four different laptops at the same time.

For VLC the sources of light – in this case, white-light LEDs – provide lighting for the room at the same time they transfer information. With the aid of a special component, the modulator, we turn the LEDs off and on in very rapid succession and transfer the information as ones and zeros. The modulation of the light is imperceptible to the human eye.

A simple photo diode on the laptop acts as a receiver. The diode catches the light, electronics decode the information and translate it into electrical impulses, meaning the language of the computer."

The technology could prove to be invaluable in locations where traditional wireless networks cannot function or are prevented from use, such as in Hospitals or on Aircraft. However it's by no means perfect.

Sadly visible light like this cannot penetrate through walls and is easily blocked (e.g. somebody walking in front of the LED source). As a result the scientists admit that such a solution would be unlikely to replace your home wireless network anytime soon, although you can never say for sure.

At present the 800Mbps figure is known to be a world record for VLC technology and was developed as part of the EU's wider OMEGA Home Gigabit Access project to improve home networking performance.
Share: Slash., Stumble, Facebook, Digg, Reddit, Delicious
Option: Link | Search

Comments: 13

asa logowoo
Posted: 2 August, 2011 - 1:58 PM
Link to comment

Posted: 2 August, 2011 - 2:51 PM
Link to comment

... whoa. Very cool.
asa logofoo
Posted: 2 August, 2011 - 2:52 PM
Link to comment

asa logoBTSUCKS
Posted: 2 August, 2011 - 5:20 PM
Link to comment

quote"The LEDs, which are placed on the ceiling and have a coverage of about 10 square meters, essentially blink on and off extremely fast to transmit the data."

Server rooms of the future will look like a 1970s disco laugh Only with LEDs replacing the glitter ball cheese
asa logodragoneast
Posted: 2 August, 2011 - 7:26 PM
Link to comment

Is it true this is a delayed press release which was originally intended for issue on 1st April (but you couldn't invent that name, could you)? But seriously keeping a clear line of sight is real progress from what current wi-fi can achieve isn't it? Ideal for bathroom use.
asa logopahnin
Posted: 2 August, 2011 - 8:17 PM
Link to comment

Super cool
asa logoled light bulbs
Posted: 3 August, 2011 - 9:54 AM
Link to comment

To introducing the new inventions to the users by presenting the information in to the blog. Here, it id the good example explain with its image...
asa logoled light bulbs
Posted: 26 August, 2011 - 5:13 AM
Link to comment

About the newest use of the led light bulb the author declaring here. They explain the whole thing about the use of the led light bulb which can be use by the scientist for wireless network....
asa logolinda
Posted: 27 August, 2011 - 4:21 PM
Link to comment

We are a manufacturer with 6000 square meters workshop, located in Zhongshan city, Guangdong, China.
Our main products are LED products, we have our own CNC, injection and Die-cast machine.
main products are T5/T8/T10 tube,LED bulbs, etc.
Our website:
Skype: debbywu6165
asa logoCurious Forge
Posted: 6 September, 2011 - 4:45 AM
Link to comment

Oh, you guys at, manufacturer of led lights. How much you gonna charge me or the cost if I will install or....ah...actually, I intend to cover my whole car with...... led lights. U dig.
asa logoThe LED Bulb
Posted: 14 September, 2011 - 8:18 PM
Link to comment

If you cover your car in LED lights, I will send you 24 GU10 LED bulbs!
Just don't drive the car while the LED lights are on... cheese
asa logosteven lymagic
Posted: 27 September, 2011 - 3:21 PM
Link to comment

Here comes Lymagic patent design LED tube, LED tube is the most popular one of the LED industry.
People feel really headache to find a more competitive design, but if you come across with our LED TUBE,
No surprise by our amazing design, we just make it.

asa logoshailendar Kaundal
Posted: 23 November, 2011 - 6:40 AM
Link to comment


Generated in 0.14334 seconds.
DB queries: 8

Copyright © 1999 to Present - - All Rights Reserved - Terms  ,  Privacy and Cookie Policy  ,  Links  ,  Website Rules