NTT DoCoMo is demonstrating its Super 3G research at Wireless Japan in Tokyo this week.

The carrier has brought its Super 3G test truck to the event and is showing the system sending data at 25 megabits per second and receiving data at 100 megabits per second.

Over the link several live video channels in both standard and high-definition are being sent and it's even possible to play a computer game with someone remotely ... although in this case the opponent is just a few meters away on the other side of the DoCoMo booth.

DoCoMo stared working on Super 3G in July 2006 as a stepping stone technology to bridge the gap between today's HSDPA systems and future 4G cellular. Currently HSDPA operates at up to 7.2 megabits per second and is expected to scale up to 100 megabits per second and its between there and 4G speeds of 1 gigabit per second that Super 3G will sit.

In outdoor tests near its R&D center in Yokosuka, near Tokyo, DoCoMo has managed to get Super 3G working up to 250 megabits per second downstream to the truck.

The carrier hopes Super 3G development work will be completed by the end of 2009 with a commercial system available from 2010 at the earliest. Super 3G is one of a number of systems that is included under the "Long Term Evolution" or LTE banner of the 3GPP standards setting body.

At Wireless Japan In Tokyo, this is Martyn Williams, IDG News Service.