Institutional development · Research, innovation and assessment · Japan
Kyoto University team sends 14.6 Gbit/s from moving car over 300 GHz terahertz link
Researchers at Kyoto University's Graduate School of Informatics report transmitting data at 14.6 Gbit/s from a moving vehicle to a receiver up to 140 metres away, using a 5G-based signal in the 300 GHz band.
Why it matters: Researchers working on terahertz vehicle communications at Kyoto University now have a moving-vehicle demonstration that the university links to future autonomous-driving data uplinks.
Kyoto University said a group led by Professor Hiroshi Harada and Associate Professor Yusuke Koda of the Graduate School of Informatics achieved 14.6 Gbit/s wireless transmission from a moving vehicle to a receiver up to 140 metres away in the 300 GHz terahertz band.
According to the university, the signal was structured on the 5G radio standard and used a 7.8 GHz-wide band, roughly 20 times the 400 MHz maximum channel bandwidth used in Japan's 5G networks.
The team also showed that a 100 MHz channel bandwidth could form a coverage area spanning 120 metres, the university said.
The university said the result could be applied to systems sending high-definition video, 3D map data and point-cloud data from moving vehicles to roadside infrastructure for autonomous driving.
Editor’s view
Scott James, Research and Innovation Editor
The Kyoto University group has shown terahertz uplink working in a real driving environment rather than only fixed or short-range settings; the university says it will continue research and development of terahertz vehicle communication technology.
