Mitigation of inter-cell interference using geometrical information in mobile WiMAX system
모바일 와이맥스 시스템에서 주변 셀의 신호 세기 정보를 이용한 인접 셀 간섭 감소 기법

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Yeom, Jae-Heung; Lee, Yong-Hwan
Issue Date
통신정보 합동학술대회(JCCI), 2007년 3월
inter-cell interferencemobile WiMAX
The Mobile-Worldwide Interoperability for Microwave Access (m-WiMAX) can provide wireless services
at high rates even in high mobility. However, the performance of m-WiMAX can seriously be degraded near
the cell boundary due to inter-cell interference (ICI). To mitigate the ICI problem in the downlink of m-
WiMAX, we consider combined use of ICI mitigation techniques with macro beamforming to maximize the
user capacity in response to the change of interference environment. The proposed scheme optimally
determines the configuration of ICI mitigation techniques using the geometrical information (e.g., the longterm
received signal strength of neighboring cells). Simulation results show that the proposed scheme can
accurately estimate the user capacity and thus improve the capacity of users near the cell boundary.
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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