Generalized analysis model for fractional frequency reuse  

作　　者：XI Wei YIN Chang-chuan YUE Guang-xin SUN Hong-mei 

机构地区：[1]Laboratory of Wireless Cornmtmication Systems and Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China [2]Communication Technology Laboratory, Intel China Research Center, Beijing 100190, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2010年第5期1-5,共5页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (60872049, 60871042);the Hi-Tech Research and Development Program of China (2007AA10Z235);the Teaching and Research Finances for the Returned Overseas Chinese Scholars

摘　　要：Fractional frequency reuse （FFR） is an effective technique to mitigate co-channel interference in orthogonal frequency division multiple access （OFDMA）-based broadband cellular systems.In this paper,we present a generalized model for FFR under which all existing FFR schemes can be considered as its special cases.Additionally,quality factor has been proposed to indicate the quality of the subband.An interesting conclusion can be drawn that,as the power ratio in FFR is adjusted continuously,the corresponding quality factor varies smoothly.Subsequently,simulation is conducted based on worldwide interoperability for microwave access （WiMAX）,and the result agrees well with our theoretical analysis.Finally,an effective range for power ratio is presented,which is very instructive to practical system design.Fractional frequency reuse （FFR） is an effective technique to mitigate co-channel interference in orthogonal frequency division multiple access （OFDMA）-based broadband cellular systems.In this paper,we present a generalized model for FFR under which all existing FFR schemes can be considered as its special cases.Additionally,quality factor has been proposed to indicate the quality of the subband.An interesting conclusion can be drawn that,as the power ratio in FFR is adjusted continuously,the corresponding quality factor varies smoothly.Subsequently,simulation is conducted based on worldwide interoperability for microwave access （WiMAX）,and the result agrees well with our theoretical analysis.Finally,an effective range for power ratio is presented,which is very instructive to practical system design.

关 键 词：co-channel interference FFR power ratio 

分 类 号：TN929.5[电子电信—通信与信息系统] U491.3[电子电信—信息与通信工程]