ABSTRACT
The
approaching 4G (fourth generation) mobile communication systems are projected
to solve still-remaining problems of 3G (third generation) systems and to
provide a wide variety of new services, from high-quality voice to high-definition
video to high-data-rate wireless channels. The term 4G is used broadly to
include several types of broadband wireless access communication systems, not
only cellular telephone systems. One of the terms used to describe 4G is MAGIC—Mobile multimedia, Anytime anywhere, Global mobility
support, Integrated wireless solution, and Customized personal service. As a
promise for the future, 4G systems, that is, cellular broadband wireless access
systems, have been attracting much interest in the mobile communication arena.
The 4G systems not only will support the next generation of mobile service, but
also will support the fixed wireless networks.
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