Future Mobile Communications Systems in Japan

Authors:
Nobuo Nakajima
Affiliations:
Department of Human Communication, Faculty of Electro-Communications, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu-shi, Tokyo 182-8585, Japan E-mail: nakajima@ieee.org< ...
Venue:
Wireless Personal Communications: An International Journal
Year:
2001

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Abstract

A penetration rate of portable phones became more than 50% in Japan andpeople are getting to expect new kinds of services provided by new generation systems. 3rd generation IMT-2000 commercial service is to be started in the second quarter of 2001 and 4th generation systems became new research target. This paper describes new services that will be provided by IMT-2000 systems in Japan and a concept of the 4th generation system. Major technologies for 4G systems are also presented.