TY - GEN
T1 - Evolution of base stations in cellular networks
T2 - IEEE International Conference on Communications, ICC 2008
AU - Liang, Yifan
AU - Goldsmith, Andrea
AU - Foschini, Gerard
AU - Valenzuela, Reinaldo
AU - Chizhik, Dmitry
PY - 2008
Y1 - 2008
N2 - 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, close-to-optimal cooperation schemes (zero-forcing with dirty-paper-coding) are always superior to denser deployment. Performance of a hierarchial cellular structure mixed with both macrocells and microcells is also evaluated.
AB - 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, close-to-optimal cooperation schemes (zero-forcing with dirty-paper-coding) are always superior to denser deployment. Performance of a hierarchial cellular structure mixed with both macrocells and microcells is also evaluated.
UR - http://www.scopus.com/inward/record.url?scp=51249113583&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51249113583&partnerID=8YFLogxK
U2 - 10.1109/ICC.2008.775
DO - 10.1109/ICC.2008.775
M3 - Conference contribution
AN - SCOPUS:51249113583
SN - 9781424420742
T3 - IEEE International Conference on Communications
SP - 4128
EP - 4132
BT - ICC 2008 - IEEE International Conference on Communications, Proceedings
Y2 - 19 May 2008 through 23 May 2008
ER -