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Latest success of open experiments of mmWave systems and networks for the Heterogeneous network in 5G Mobile Communication are reviewed. This is conducted in “wireless-fiber project” funded by the Ministry of Internal Affairs and Communications, Japan and high-speed wireless communication systems above Gb/s has been pursued by the collaborative team in Tokyo Institute of Technology as well as the...
A novel compact-range wireless access system is proposed for multi-Gb/s data transfer in the 60-GHz band. Large-array antennas in the access point generate a quasi-plane wave and form a stable communication zone proportional to the antenna size. The link budget based upon the Friis transmission equation is not applicable as ever in this compact-range communication system. The signal coverage up to...
We report the development of the prototype of a high-speed wireless file-transfer system using a 60-GHz band. The prototype achieved an effective user-data rate over 3 Gb/s using a quadrature-phase-shift keying modulation, including overheads of a physical layer and a retransmission control between two memory devices, by using a new 40-nm CMOS baseband LSI and automatic direct memory-access control.
A novel concept of short range wireless access system is proposed for multi-Gb/s data transfer in the 60 GHz band. An extremely large array antenna (64×64 elements) generates a quasi-plane wave and forms communication zone proportional to the antenna size. The key is that the stable signal coverage up to 10 m with uniform illumination still stays in the Fresnel region of the array antenna. The link...
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