Only one LED light can achieve high-speed Internet access for 1 second.

Core Tips | Lights that illuminate the darkness and deliver warmth. But do you know? It actually allows you to access the Internet and even have the function of "GPS satellite"...

Yesterday, the reporter of Dahe Daily was informed that the National 863 Program, led by the Information Engineering University, and the major project “Research and Application of Key Technologies of Visible Light Communication System” in Zhengzhou City have made major breakthroughs. In one fell swoop, the real-time communication rate of visible light is increased to 50 Gbps, which is five times the highest international level currently reported. It is equivalent to 0.2 seconds to download a high-definition movie.

With a single led light , you can achieve high-speed Internet access. How is this technology implemented? Does this breakthrough mean that "optical interconnection" is about to enter the homes of ordinary people?

High-speed Internet access through LED desk lamps.

Visible light communication high speed transmission prototype

In the mine, the miner will be positioned as long as it passes under the LED light.

Device installed on miner's helmet

【breakthrough】

Real-time visible light communication speed increased to 50Gbps, which is 5 times the highest international level

"Visible light communication technology, in layman's terms, can realize communication, monitoring and positioning in places where there is light." Professor Zhang Jian, executive deputy director of the visible light communication laboratory of Information Engineering University, said that its "secret" lies in LED light bulbs. Different from ordinary fluorescent lamps and incandescent lamps, the LED lamps can be quickly extinguished and the flashing frequency is extremely high, so that they can undertake the task of transmitting information.

In recent years, the huge demand for wireless communication services and applications has led to the emergence of new wireless communication technologies such as radio frequency identification, Bluetooth, ultra-wideband, and WiFi, which has aggravated the contradiction between supply and demand of radio spectrum resources. As a new wireless communication technology, visible light communication is highly valued worldwide.

At the beginning of 2011, under the impetus of the famous expert in the field of information technology and the academician of the Chinese Academy of Engineering, Qi Jiangxing, the visible light communication laboratory of the Information Engineering University was formally established, and began to undertake the National 863 Program "Key Technology Research of Visible Light Communication System" project.

In the past few years, the laboratory has reached the international leading level in the field of basic research -

In November 2014, the coal mine underground visible light communication and positioning system developed by the laboratory was successfully installed in the roadway of Pingdingshan Pingmei Shenma Group. This is the first application demonstration of visible light communication technology into the underground coal mine. Nowadays, the project research has once again made a major breakthrough, increasing the real-time communication rate of visible light to 50 Gbps, which is five times the highest international level currently reported. The relevant results have been tested and certified by the Institute of Telecommunications Transmission of the Ministry of Industry and Information Technology.