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2008
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Evolution of Base Stations in Cellular Networks: Denser Deployment versus Coordination

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Evolution of Base Stations in Cellular Networks: Denser Deployment versus Coordination
Abstract— It has been demonstrated that base station cooperation can reduce co-channel interference (CCI) and increase cellular system capacity. In this work we consider another approach by dividing the system into microcells through denser base station deployment. We adopt the criterion to maximize the minimum spectral efficiency of served users with a certain user outage constraint. In a two-dimensional hexagon array with homogeneous microcell structure, under the proposed propagation model denser base station deployment outperforms suboptimal cooperation schemes (zero-forcing) when the density increases beyond 3 − 12 base stations per km2 , the exact value depending on the rules of outage user selection. However, closeto-optimal cooperation schemes (zero-forcing with dirty-papercoding) are always superior to denser deployment. Performance of a hierarchial cellular structure mixed with both macrocells and microcells is also evaluated.
Yifan Liang, Andrea J. Goldsmith, Gerard J. Foschi
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICC
Authors Yifan Liang, Andrea J. Goldsmith, Gerard J. Foschini, Reinaldo A. Valenzuela, Dmitry Chizhik
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