My scholar proposes a new framework for Beat Hertz communication to help future 6G development
Science and Technology Daily News (Reporter Wu Changfeng) A reporter recently learned from the University of Science and Technology of China that a joint team led by Professor Xu Zhengyuan from the school recently published an article titled The research paper on "Communication: Spectrum Fusion for Wireless Communication" provides new ideas for the development of the sixth generation of mobile communications (6G).
The fifth generation of mobile communications (5G) has entered the stage of commercial deployment, and countries have launched related research work aiming at future 6G mobile communications, trying to seize the technological "fast lane".
In order to achieve the ultimate goal of full spectrum and full coverage of space, after combing all available wireless communication frequency bands and excluding X-ray bands and terahertz frequency bands that have strong radiation and harmful to humans, the beathertz frequency band becomes the only available communication spectrum resource. .
Beat Hertz communication has ultra-large bandwidth and ultra-high spatial resolution capabilities, and can be compatible with multiple forms of new mobile terminals and full-space application scenarios such as indoor ultra-wide bandwidth interconnection, high-precision positioning, large-scale industrial machine communication, and vehicle Internet, underwater Internet of things, space Internet, etc., to meet the interconnection of humans, machines and things.
In recent years, for specific application scenarios, academia and industry have tried wireless optical communication technologies that use a variety of light waves as information carriers, but these technologies only use fragmented frequency spectrum in the beat-hertz frequency band, which severely restricts the overall resources of the communication network. Optimization can't adapt well to multiple application environments and different types of terminals, and can't even meet the user's special information security and anti-interference requirements.
The above-mentioned research puts forward a new system framework for Beat Hertz communication for the first time, which breaks through the traditional spectrum segmentation method of naked eye vision, organically integrates infrared, visible and ultraviolet multi-band spectrums, and realizes the effective development and utilization of the full range of Beat Hertz.
By intelligently selecting wavelengths and spatial channels through spectrum sensing, the research reveals the signal transmission characteristics of the full frequency band and the impact of environmental noise, and demonstrates the communication distance and data rate performance limits of PHz communication in full-space scenarios such as indoor, outdoor, and underwater. For example, the indoor rate is up to tens of terabits per second (Tbps), and the underwater distance is as far as 500 meters. The potential polarization and angular momentum dimensional characteristics of the beathertz carrier are explored for signal modulation and multiplexing, which can realize communication links. And the flexible and intelligent configuration of the network serves new high-speed services and applications such as holographic communication.