To: rkral who wrote (27809 ) 10/15/2002 10:46:04 AM From: jackmore Read Replies (1) | Respond to of 197271 NTT DoCoMo successfully tests 4G outdoors No reports of frazzled bystanders By Tony Dennis: Tuesday 15 October 2002, 11:53 'THE SHOW MUST GO ON' is undoubtedly NTT DoCoMo's motto. Currently, the company is struggling to add subscribers to its FOMA (3G) service. The last figures the company released in August give it a mere 134,000 users and a rumoured coverage in Japan of around 60 per cent of the country. Yet the company has announced that it has successfully tested a 4G outdoor connection which will provide 100Mbit/s for receiving and 20Mbit/s for sending. Interestingly, both channels use different technology. It's variable spreading factor orthogonal frequency code division multiplexing (VSF-OFCDM) for the down link, and multi-carrier direct spread code division multiple access (DS-CDMA) for the upstream link. (Sheesh!) The catch is that this 4G technology is also pretty bandwidth hungry, requiring a 100 MHz spread. Nonetheless, the Japanese government in the shape of its Ministry of Public Management, Home Affairs, Posts and Telecommunications (MPHPT) is hoping to get 4G off the ground by 2005 and will attempt to roll it out commercially in 2010. Given how these things slip we're probably talking 2013. The Japanese are also hoping that DoCoMo's technology might form the basis for an ITU (International Telecommunications Union) standard for 4G which will be the follow-up to IMT 2000 (better known as 3G). That should help the Japanese mobile handset manufacturers. Hopefully, NTT DoCoMo will do a lot better with the export of its i-mode technology which has just opened for business in Belgium today, courtesy of Base (part of the Dutch KPN Group). The service has 49 sites which can be viewed in Dutch, French and English but still only one compatible handset courtesy of NEC. No mention of Toshiba's handset yet. µ theinquirer.net