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High capacity with limited spectrum in cellular systems

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6 Author(s)
Madfors, M. ; Ericsson Radio Syst. AB, Stockholm, Sweden ; Wallstedt, K. ; Magnusson, S. ; Olofsson, H.
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The rapid growth of wireless telecommunication establishes the need for capacity evolution methods for the cellular systems of today. The authors discuss some important aspects of creating high-capacity cellular networks that operate with a limited amount of frequency spectrum. Macrocells are initially used to build a network with cost-effective wide-area coverage. By decreasing site-to-site distance and tightening frequency reuse, the capacity of the macro network can be increased substantially. Subsequently, micro- and picocells are added, creating a multilayered cellular network. Methods such as power control, efficient frequency allocation, and traffic control between the layers are employed to exploit the full potential of the network

Published in:

Communications Magazine, IEEE  (Volume:35 ,  Issue: 8 )