Large system analysis of base station cooperation on the downlink

Randa Zakhour*, Stephen V. Hanly

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

6 Citations (Scopus)

Abstract

This paper considers maximizing the network-wide minimum supported rate in the downlink of a two-cell system with symmetric channel statistics, where each base station (BS) is endowed with multiple antennas. This is done for different levels of cell cooperation. At one extreme, we consider single cell processing where the BS is oblivious to interference created at the other cell. At the other, we consider full cooperative macroscopic beamforming. In between, we consider coordinated beamforming, which takes account of intercell interference, without full cooperation. Lagrangian duality and large system analysis, where the numbers of antennas at the BS N and of users in each cell K both grow large, with cell loading K/N tending to a finite constant β, are combined to obtain concise expressions for asymptotically optimal beamformers and limiting SINRs, thereby simplifying beamformer design and comparison of the schemes.

Original languageEnglish
Title of host publication2010 48th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2010
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages270-277
Number of pages8
ISBN (Print)9781424482146
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event48th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2010 - Monticello, IL, United States
Duration: 29 Sep 20101 Oct 2010

Other

Other48th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2010
CountryUnited States
CityMonticello, IL
Period29/09/101/10/10

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