A group of researchers have developed a terahertz (THz) transmitter capable of transmitting data at least ten times faster than that offered by the 5G networks, expected to appear around 2020.

The researchers, from Hiroshima University, Japan’s National Institute of Information and Communications Technology and Panasonic, said that the THz transmitter could transmit data at a rate exceeding 100 gigabits per second over a single channel using the 300-GHz band.

According to the team of scientists, the THz band is a new and vast frequency resource expected to be used for future ultrahigh-speed wireless communications. They have developed a transmitter that achieves a communication speed of 105 gigabits per second using the frequency range between 290 GHz to 315 GHz.

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). This year, they showed six times higher per-channel data rate, exceeding 100 gigabits per second for the first time as an integrated-circuit-based transmitter. At this data rate, the whole content on a DVD can be transferred in a fraction of a second.

Professor Minoru Fujishima, of the Graduate School of Advanced Sciences of Matter at  Hiroshima University, said: “This year, we developed a transmitter with ten times higher transmission power than the previous versions. This made the per-channel data rate above 100 Gbit/s at 300 GHz possible.”

He went on to add: “Today, you must make a choice between 'high data rate' (fiber optics) and 'minimum latency' (microwave links). You can't have them both. But with terahertz wireless, we could have light-speed minimum-latency links supporting fiber-optic data rates.”

The research group said that they intend to work on the further development of 300-GHz ultrahigh-speed wireless circuits.

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