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4G Wireless Technology

INTRODUCTION


While carriers and handset manufacturers obviously have their hands full with 3G, some companies are already looking beyond this next generation of wireless technology and networks. 4G is simply an initiative by academic R&D labs to move beyond the limitations and problems of 3G which is having trouble getting deployed and meeting its promised performance and throughput. While this 3G has not completely reached researchers and vendors are expressing growing interest in 4G why? Two main areas are addressed in these initiatives: An increase of capacity in the radio page link and seamless mobility across heterogeneous access networks. Section 2 discusses about the issues of 3G that has created interest towards 4G developments. Section 3 about evolution and comparison, Section 4 describes about the goals and the vision, section 5 explains about some of the technologies for 4G, and in other following sections the applications, the research and other issues for 4G developments are discussed.