Toward the materialization of gigabit class ultrafast wireless LAN

The gigabit wireless LAN system

As shown in the image, the gigabit wireless LAN system using the millimeter-wave band provides ultra high-speed communication at a maximum transmission rate of 3 Gbps and realizes a point-to-multipoint network in an indoor environment.  We have developed new components with technologies indispensable for a 60-GHz-band wireless LAN. The prototype equipment of 60-GHz-band communication was tested in a demonstration. It is the first demonstration of a 3 Gbps wireless LAN using millimeter-wave band in Japan.

To realize the above-mentioned ultra high-speed communication, we have developed the following new technologies:
(1) Antenna technology: We have developed a new antenna (Photo 1) that can switch the direction of beams to provide high-speed communication anywhere in a room. The designed antenna has a high gain and a wideband reflection characteristic.
(2) Wireless security technology: We have proposed a new key generation sharing technique using the beam-switched antenna. The key generated by our technique is secure in terms of the amount of information, and cannot be decoded by a high-spec computer. The effectiveness of our proposed wireless security technology was verified through experiments.
(3) Modulation/demodulation technology: We have developed a prototype IC (Photo 2) with a modulation called FSK (frequency shift keying) and succeeded in a transmission experiment within a maximum distance of 5 m in the 60 GHz band.
The use of our developed technologies makes it possible to realize high-speed wireless communication for large-media-file contents at home and in the office, as well as through public wireless LAN all over the city

New Technologies that can realize ultra high-speed communication

Antenna technology
We have developed a new antenna that can switch the direction of beams to provide high-speed communication anywhere in a room. The designed antenna has a high gain and a wideband reflection characteristic.


Wireless security technology
We have proposed a new key generation sharing technique using the beam-switched antenna. The key generated by our technique is secure in terms of the amount of information, and cannot be decoded by a high-spec computer. The effectiveness of our proposed wireless security technology was verified through experiments.


Modulation/demodulation technology
We have developed a prototype IC (Photo 2) with a modulation called FSK (frequency shift keying) and succeeded in a transmission experiment within a maximum distance of 5 m in the 60 GHz band.


The use of our developed technologies makes it possible to realize high-speed wireless communication for large-media-file contents at home and in the office, as well as through public wireless LAN all over the city.


ATR Wave Engineering Laboratories