TY - GEN
T1 - Interference suppression in wireless cellular networks through picocells
AU - Liang, Yifan
AU - Valenzuela, Reinaldo
AU - Foschini, Gerard
AU - Chizhik, Dmitry
AU - Goldsmith, Andrea
PY - 2007
Y1 - 2007
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 picocells through denser base station deployment. For a two-dimensional hexagon cellular array and the propagation model under consideration, we observe that the operating regime shifts from interference-limited to noise-limited when the density increases to about 20 base stations per km2. To compare the performance of both approaches, we adopt a criterion to maximize the minimum served spectral efficiency with a certain user outage constraint. Simulations show that 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 base station deployment.
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 picocells through denser base station deployment. For a two-dimensional hexagon cellular array and the propagation model under consideration, we observe that the operating regime shifts from interference-limited to noise-limited when the density increases to about 20 base stations per km2. To compare the performance of both approaches, we adopt a criterion to maximize the minimum served spectral efficiency with a certain user outage constraint. Simulations show that 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 base station deployment.
UR - http://www.scopus.com/inward/record.url?scp=50249119655&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50249119655&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2007.4487380
DO - 10.1109/ACSSC.2007.4487380
M3 - Conference contribution
AN - SCOPUS:50249119655
SN - 9781424421107
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1041
EP - 1045
BT - Conference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC
T2 - 41st Asilomar Conference on Signals, Systems and Computers, ACSSC
Y2 - 4 November 2007 through 7 November 2007
ER -