[Press Release]Development of 6G-Oriented Ultra-Wideband Wireless Transmission Testbed in the THz Band and Successful Demonstration of Transmission Under 1,000 km/h High-Mobility Emulation

A research group led by Professor Hiroshi Harada and Associate Professor Yusuke Koda at the Graduate School of Informatics, Kyoto University, has developed a 6G-oriented ultra-wideband wireless transmission testbed operating in the terahertz (THz) band around 300 GHz using software-defined radio technology. Under a high-mobility emulation corresponding to speeds of up to 1,000 km/h, the team successfully demonstrated ultra-wideband signal transmission compliant with existing 5G standardized communication specifications, achieving a transmission bandwidth of 7.8 GHz—approximately 20 times wider than the maximum 400 MHz channel bandwidth currently allocated for 5G in Japan—and a data rate of 14.6 Gbit/s. This achievement enables the development and proof-of-concept experiments of communication systems for a wide range of mobility scenarios, from fixed wireless systems to terrestrial mobile communications and non-terrestrial networks. The results are expected to further accelerate research and development of THz-based ultra-high-speed wireless communication systems toward the revolution of 6G.

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https://www.dco.cce.i.kyoto-u.ac.jp/en/PL/PL_2025_05en.html