Chinese laboratory makes major breakthrough in wireless communication

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Photo 6G: VCG

A high-tech lab in Nanjing, capital of east China’s Jiangsu Province, has announced a major achievement related to 6G-oriented 100/200 Gbps (gigabits per second) terahertz real-time wireless communication, with a 10 to 20 times higher transmission rate than 5G networks.

With the support of the national key research and development plan for 6G, the first experimental 360-430GHz terahertz 100 / 200Gbps real-time wireless transmission communication system was built.

This has led to the fastest real-time transmission for terahertz real-time wireless communication that has been reported publicly around the world, according to an article published Wednesday by Purple Mountain Laboratories.

Adopting the path of photonic terahertz technology, which generates terahertz signals through two beat frequencies of higher frequency light waves, single wavelength net bit rate of 103.125 Gbps and net bit rate dual-wavelength 206.25 Gbit / s was achieved for the first time in real-time wireless transmission, the lab said.

Terahertz wireless communication is considered the core technology of 6G networks.

The terahertz frequency band, ranging from 300 GHz to 3 THz, is rich in frequency resources, which can support ultra-high speed wireless communication from 100 Gbit / s to 1 Tbit / s (terabits per second, this which is equivalent to 1000 Gbit / s).

This will increase the maximum transmission speed of the existing 5G system, which can serve future 6G holographic communications, the metaverse and other new applications.

Achievement has a wide range of application perspectives, according to Purple Mountain. It can be integrated with existing fiber optic networks to expand outdoor and indoor ultra-high speed wireless access from 100 to 1000 Gbps, replace existing mobile network fiber optic networks to achieve rapid deployment and replace the huge amount of cables in the data center to significantly reduce costs and power consumption.

In the future, it can also be installed in satellites, unmanned aerial vehicles and airships, which can be applied to high-speed wireless communication scenarios between clusters of satellites, between the sky and the Earth. and between satellites over 1000 kilometers.

“This achievement is fully in line with the direction of technological development of the country and strengthens China’s leading position in the wireless communications sector,” Xiang Ligang, chief executive of the association, told the Global Times on Wednesday. of the Telecommunications Industry Information Consumption Alliance.

Compared to the millimeter wave (mmWave), terahertz waves have higher frequencies. As a result, terahertz waves will carry data faster at the expense of limited signal propagation distance, which poses problems for its large-scale application, Xiang noted.

The 5G network uses the frequency bands between 24 GHz and 100 GHz, called mmWave.

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