Distributed downlink beamforming in cellular networks

Boon Loong Ng, Jamie Evans, Stephen Hanly

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

14 Citations (Scopus)

Abstract

We consider a cellular network where base stations can cooperate to determine the signals to be transmitted on the downlink. Using a particular downlink beamformer structure, we recast our downlink beamforming problem as a virtual linear minimum mean square error (LMMSE) estimation problem. Based on this virtual set up, we remodel the network as a factor graph with loops and present a simple distributed cooperative scheme for base stations based on the sum-product algorithm. We study the condition for convergence for the distributed algorithm and demonstrate its performance via simulations.

Original languageEnglish
Title of host publicationProceedings - 2007 IEEE International Symposium on Information Theory, ISIT 2007
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages6-10
Number of pages5
ISBN (Print)1424414296, 9781424414291
DOIs
Publication statusPublished - 2007
Externally publishedYes
Event2007 IEEE International Symposium on Information Theory, ISIT 2007 - Nice, France
Duration: 24 Jun 200729 Jun 2007

Other

Other2007 IEEE International Symposium on Information Theory, ISIT 2007
CountryFrance
CityNice
Period24/06/0729/06/07

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