Download DVDs in Seconds: Terahertz Wireless Could Make Space Borne Satellite Links as Fast as Fiber-Optic Links
Hiroshima University, National Institute of Information and Communications Technology, and Panasonic Corporation announced the development of a terahertz (THz) transmitter capable of transmitting digital data at a rate exceeding 100 gigabits (= 0.1 terabit) per second over a single channel using the 300-GHz band. This technology enables data rates 10 times or more faster than that offered by the fifth-generation mobile networks (5G), expected to appear around 2020.
The THz band is a new and vast frequency resource expected to be used for future ultrahigh-speed wireless communications.
Terahertz wireless links to spaceborne satellites could make gigabit-per-second connection speeds available to anyone anytime, anywhere on the face of the earth, on the ground or in flight.
Credit: Fujishima et al. (Hiroshima University)
The research group has developed a transmitter that achieves a communication speed of 105 gigabits per second using the frequency range from 290 GHz to 315 GHz. This range of frequencies are currently unallocated but fall within the frequency range from 275 GHz to 450 GHz, whose usage is to be discussed at the World Radiocommunication Conference (WRC) 2019 under the International Telecommunication Union Radiocommunication Section (ITU-R). Last year, the group demonstrated that the speed of a wireless link in the 300-GHz band could be greatly enhanced by using quadrature amplitude modulation (QAM) [2].
This work was supported by the R&D on Wireless Transceiver Systems with CMOS Technology in 300-GHz Band, as part of an R&D program on Key Technology in Terahertz Frequency Bands of the Ministry of Internal Affairs and Communications, Japan.
Contacts and sources:
Norifumi Miyokawa
[2] K. Katayama, K. Takano, S. Amakawa, S. Hara, A. Kasamatsu, K. Mizuno, K. Takahashi, T. Yoshida, M. Fujishima, “A 300GHz 40nm CMOS Transmitter with 32-QAM 17.5Gb/s/ch Capability over 6 Channels,” International Solid-State Circuits Conference (ISSCC) 2016.
Source: http://www.ineffableisland.com/2017/02/download-dvds-in-seconds-terahertz.html
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