Communications of the ACM
Terahertz Wireless Could Make Spaceborne Satellite Links as Fast as Fiber-Optic Links
Terahertz wireless links to satellites in orbit could make gigabit-per-second connection speeds available to anyone, any time, anywhere.
Credit: Hiroshima University
Researchers at Hiroshima University, the National Institute of Information and Communications Technology, and Panasonic Corporation in Japan have developed a terahertz (THz) transmitter that can transmit digital data at a rate exceeding 100 Gbps over a single channel using the 300-GHz band.
The researchers note the technology enables data rates at least 10 times faster than those offered by 5G mobile networks, which are expected to appear around 2020.
Last year, the researchers demonstrated the speed of a wireless link in the 300-GHz band could be greatly enhanced by using quadrature amplitude modulation.
This year, the researchers built upon their efforts to show a six-fold increase in the per-channel data rate, exceeding 100 Gbps. At this data rate, the entire content of a DVD can be transferred in a fraction of a second.
Terahertz wireless technology could provide light-speed minimum-latency links supporting fiber-optic data rates, according to Hiroshima University professor Minoru Fujishima.
From Hiroshima University
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