| Yoshitaka Iida | Mobile System Department, |
| Kiyoshi Kawamoto | Mobile Development Department, |
| Yusuke Takemichi | Software Department, |
| Katsuhiko Tsunehara | Network Systems Research Department, Central Research Laboratory, |
| Toshiyuki Saito | Network Systems Research Department, Central Research Laboratory, |
1xEV-DO Revision A is a cell phone system that achieves high-speed data transmission of up to 3.1 Mbit/s on the downlink, and up to 1.8 Mbit/s on the uplink using the same frequency band as existing 1xEV-DO (1.25 MHz). It is worthy of being called a pioneering wireless broadband technology. To realize advanced services such as the video telephony, the Hitachi Group has applied that technology to build a commercial system. To cope with diversification in wireless broadband services, standardization organizations have been studying various next-generation wireless access systems, and Hitachi, too, is harnessing the strength of the Group to aggressively take up the challenge of mobile communication development.
|
Mobile System Department, Hitachi Communication Technologies, Ltd. |
|
TEL: +81-45-865-7003 FAX: +81-45-865-7122 |
 |
yoshitaka.iida.ax@hitachi.com |
 |
The Hitachi Hyoron (Japanese Only) |
1xEV-DO, CDMA 1X WIN, AP, QoS, BCMCS
