Wireless Broadband Planning K.K., KDDI Corp. and Intel Corp. have demonstrated mobile WiMAX communications at CEATEC Japan 2007. Licensed a wireless base station for test, the companies demonstrated the technology actually transmitting radio.
Japan's Ministry of Internal Affairs and Communications is currently recruiting mobile WiMAX or next-generation PHS telecom carriers with a plan to select a total of two companies in 2007. The three companies appealed their superiority by exhibiting the progress in their telecom system development.
Wireless Broadband Planning is a mobile WiMAX service planning company, in which several firms including KDDI and Intel invest. It was Wireless Broadband Planning that demonstrated the mobile WiMAX access at KDDI's booth.
Features 2 x 1 MIMO Technology, Demonstrates Maximum Downloading at 40.4 Mbps
Data rates of the showcased telecom system reached maximum 40.4 Mbps per 10 MHz channel when downloading and 10.6 Mbps when uploading, if the location was relatively close to the base station and had little radio interference. Even including rates marked at locations away from the base station, the system can still achieve average downloading at 10.1 Mbps and uploading at 2.7 Mbps, according to the companies. In other words, users can enjoy broadband communications equivalent to ADSL on streets.
The base station already features MIMO (multiple input multiple output) spatial multiplexing technology. The number of antennas embedded with the base station is 2. With a terminal, "The number of antennas for multiple input depends on terminal packages, but multiple output uses only one antenna," said an attendant at KDDI's booth.
Ultra small base stations were also showcased along with the general base station. It measures 255 x 200 x 39 mm and weighs only 250 g. "This small base station is different from femto cells, which private users set at their homes. It is purely for telecom carriers," the attendant explained.
As for terminals, the companies demonstrated TV conference using a PC and a UMPC attached with a PC card by Samsung Electric Co. Ltd. Meanwhile, Intel showcased a mobile WiMAX/WLAN dual module development, a PC featuring the dual module and a low-power version chipset for MID (mobile Internet device), among other items.