Interference suppression in wireless cellular networks through picocells

Yifan Liang, Reinaldo Valenzuela, Gerard Foschini, Dmitry Chizhik, Andrea Goldsmith

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

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 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.

Original languageEnglish (US)
Title of host publicationConference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC
Pages1041-1045
Number of pages5
DOIs
StatePublished - 2007
Externally publishedYes
Event41st Asilomar Conference on Signals, Systems and Computers, ACSSC - Pacific Grove, CA, United States
Duration: Nov 4 2007Nov 7 2007

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Other

Other41st Asilomar Conference on Signals, Systems and Computers, ACSSC
CountryUnited States
CityPacific Grove, CA
Period11/4/0711/7/07

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Networks and Communications

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