Speed ​​increased to 50Gbps China's visible light communication research has achieved major breakthroughs

The scientific and technological developments led by the Information Engineering University undertook a major breakthrough in the “Key Technology Research for Visible-Light Communication Systems” project of the National 863 Program, which has increased the visible-light real-time communication rate to 50Gbps, which is equivalent to 0.2 seconds to complete the download of a high-definition movie. It is 5 times that of the highest international level that is currently publicly reported. The relevant results have been tested and certified by the National Institute of Telecommunications and Transmission of the Ministry of Industry and Information Technology.

Visible light communication is a new type of high-speed data transmission technology that uses “semiconductor lighting (LED light) light to achieve “light access to the Internet”. Its spectrum bandwidth is nearly ten thousand times that of currently in use radio spectrum, and it is a next-generation wireless with broad application prospects. One of the communication technologies. The unique anti-jamming, anti-jamming, and high-speed broadband access capabilities of this technology have made it a major application requirement and development prospect in high-performance computers, phased array radars, ships and other equipment communications.

Professor Jiang Jiangxing, an academician of the Chinese Academy of Engineering and a professor of Information Engineering, said that at present, there are approximately 44 billion luminaires in the lighting network. The integration of tens of billions of LED lighting devices with other devices will create a huge visible light communication network. It can be imagined that after the realization of large-scale visible light communication in the future, each lamp can be used as a high-speed network hotspot. When people wait for the car, they can download several movies under the street lamp. In the airplane and high-speed train, they can also use the LED light source to wireless high-speed Internet access. To meet the needs of wireless network communication such as indoor network, Internet of things, vehicle networking, industrial 4.0, secure payment, smart city, and national defense communications, and provide a new and cheap method of access for Internet+.

Information Engineering University is an earlier research unit engaged in research and development of visible light communication technology in China. It is the responsibility unit of the National Visible Light Communication Standardization Group and has established the "China's visible light communication industry technology innovation strategic alliance." The academic team led by Prof. Jiangxing Jiang and Prof. Yuhong Yi broke through a series of key technologies and became the international frontier of visible light communication research and development.

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