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Efficiently sharing the spectrum resource is of paramount importance in wireless communication systems, in particular in Personal Communications where large numbers of wireless subscribers are to be served. Spectrum resource sharing involves protecting other users from excessive interference as well as making receivers more tolerant to this interference.
Transmitter power control techniques fall into the first category. In this paper we describe the power control problem, discuss its major factors, objective criteria, measurable information and algorithm requirements. We attempt to put the problem in a general framework and propose an evolving knowledge-bank to share, study and compare between algorithms.
The rapid increase for various wireless mobile services everywhere and at any time requires highly sophisticated schemes for allocating and managing radio channel resources. These resources are becoming scarcer as a result of a rather limited allocation of spectrum by interna-tional agreements.A principal method to efficiently allocate and manage channel resources is to share them. The more shared they are the better it is, so long as connection quality is not deteriorated. The major penalty of sharing radio channels is the unwanted (co-channel) interference generated during the sharing process, on which we elaborate below. Different sharing (multiple access) techniques have different impacts. Beside the (co-channel) interference, wireless networks suffer also from cross-channel interference resulting from imperfect technology, doppler shift and multi-paths propagation. The major objective of transmitter power control is to alleviate these co-channel and cross-channel interferences.
Report can be downloaded for Framework For Power Control In Cellular System from the attachment below
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