the manufacturer Fujitsu, in partnership with the Tokyo Institute of technology, just set a wireless transmission related record with a record rate of 56 Gigabits per second. In comparison, the current speed of the optical fiber of ISPs public reached the Gigabit per second and that of Wi-Fi 802.11ac in theory could reach 7 Gigabits per second (using 8 channels simultaneously). To achieve this speed record, Fujitsu has developed a system capable of transmitting signals at very high speeds, using a wide range of radio waves with frequencies between 72 and 100 GHz.
the design of this type of circuit is very complex because the waves have to handle a wavelength on the order of mm which can lead to loss of data during transmission. The circuit developed with the Tokyo University of Technology divides the data signals into two parts, each transmitted by two different frequency bands (72-82 GHz and 89-99 GHz) to minimize losses. The two parts are then recombined at the reception.
If the test transmission took place successfully, it must be said that it was carried out within a distance of only 10 cm. The waves used with low range, the process would be applied to an infrastructure made up of a multitude of little remote relay stations each other.
If it ended in a 2020 marketing, technology Fujitsu could represent an attractive alternative to offer high-speed Internet access in locations where fiber is not installed.
Source: Fujitsu
François BEDIN
Reporter
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