Low complexity non-iterative coordinated beamforming in 2-user broadcast channels

Ki Hong Park, Young Chai Ko, Mohamed Slim Alouini

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We propose a new non-iterative coordinated beamforming scheme to obtain full multiplexing gain in 2-user MIMO systems. In order to find the beamforming and combining matrices, we solve a generalized eigenvector problem and describe how to find generalized eigenvectors according to the Gaussian broadcast channels. Selected simulation results show that the proposed method yields the same sum-rate performance as the iterative coordinated beamforming method, while maintaining lower complexity by non-iterative computation of the beamforming and combining matrices. We also show that the proposed method can easily exploit selective gain by choosing the best combination of generalized eigenvectors.

Original languageEnglish
Article number5567184
Pages (from-to)2810-2815
Number of pages6
JournalIEEE Transactions on Communications
Volume58
Issue number10
DOIs
Publication statusPublished - 2010 Oct

Keywords

  • Coordinated beamforming
  • Gaussian broadcast channel
  • generalized eigenvector problem

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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