Even if there is no WIFI, we can still surf the Internet with a LED light. Yesterday, good news from School of Computer Science and Technology in Fudan University said that an international leading communication technology using indoor visible optical transmission network signal succeeded in the laboratory. Researchers connected network signal into a 1W LED lamp bead and 4 computers under the light can get online. It is regarded as the world’s fastest lighting network as the highest rate can reach 3.25 G and the average rate can reach 150M. In the next month, 10 sample lights will attend the 2013 Shanghai China International Industry Fair.
Visible Light Communication is called Lifi
For a long time, it symbolizes the flash of inspiration for an inventor when drawing a shining bulb over one’s head. But German physicist Harald Hass found out a creative idea from the bulb, that is to turn the invisible network signal into visible signal. Hass and his team in England Edinburg University invented the patented technology lately by using the shining light to transform digital information. The process is called VLC. People tend to call it Lifi with affection, indicating that it will bring revolutionary change for wireless network transmission technology represented by WIFI now.
How far is the unbelievable network technology from us? The answer is vey near. It is coming from the Fudan University laboratory towards us step by step. Professor Xue Xiangyang from School of Computer Science and Technology in Fudan University told the reporter that the wireless signal transmission device exists many limitations and they are rare, expensive and low efficiency. Such as cell phones, there are millions of base stations to help them strengthen the signal but large quantity energy was wasted on cooling with the efficiency of only 5%. By contrast, the bulbs in the world is inexhaustible, especially at home the LED lighting is substituting the traditional incandescent lamp on a large-scale. As long as adding a microchip in any LED bulb, the bulb will turn into a wireless transmitter.