Coordination limits in MIMO networks

Ali Tajer, Xiaodong Wang, H. Vincent Poor

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

Abstract

Communication quality in interference-limited wireless networks depends heavily on the collective coordination among the users for mitigating the interference. Coordinating the users, viable through information exchange across the network, consumes communication resources and, therefore, is desired to be free of redundancy. This paper focuses on dense multi-cell multi-antenna networks and assesses the minimum coordination level that ensures achieving the optimal scaling law of the downlink sum-capacity of the network. It is demonstrated that exchanging a finite number of bits across the network, in the form of feedback and cooperation, suffices to achieve the optimal capacity scaling. This coordination level is considerably less than those required by the existing coordination strategies which necessitate exchanging infinitely many bits across the network. A constructive proof is provided.

Original languageEnglish (US)
Title of host publication2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
Pages933-937
Number of pages5
DOIs
StatePublished - Oct 26 2011
Event2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011 - St. Petersburg, Russian Federation
Duration: Jul 31 2011Aug 5 2011

Other

Other2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
CountryRussian Federation
CitySt. Petersburg
Period7/31/118/5/11

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Information Systems
  • Modeling and Simulation
  • Applied Mathematics

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    Tajer, A., Wang, X., & Poor, H. V. (2011). Coordination limits in MIMO networks. In 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011 (pp. 933-937). [6034275] https://doi.org/10.1109/ISIT.2011.6034275