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Transmit Power Allocation for Soft Frequency Reuse in Coordinated Cellular Systems  

Kim, Dong-Hee (전주대학교 전기전자정보통신공학부 무선미디어 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.4A, 2009 , pp. 316-323 More about this Journal
Abstract
Power allocation of soft frequency reuse(SFR) to increase cell edge user throughput by reducing inter-cell interference is proposed for coordinated cellular systems. SFR is the effective technique to increase cell edge user throughput, however, it costs the degradation of total system throughput. The cost increases when SFR operated in distributed resource controlled systems fails to be fast adaptive in the change of user distribution. The proposed scheme enables coordinated cells to control transmit power adaptively depending on user distribution so that it minimizes the loss of system throughput introduced from SFR while it guarantees enhancement of cell edge user throughput. Through system level simulation considering neighboring two cells, evaluation result for adaptive power allocation is shown compared with static power allocation.
Keywords
Soft Frequency Reuse; Inter-cell interference; Cell coordination; Power allocation; Cell edge user throughput;
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