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  • Research Article
  • Open Access

Effects of Mutual Coupling and Noise Correlation on Downlink Coordinated Beamforming with Limited Feedback

EURASIP Journal on Advances in Signal Processing20092009:807830

  • Received: 1 December 2008
  • Accepted: 22 April 2009
  • Published:


We consider the impact of receiver correlation, antenna coupling, matching, and noise on the performance of coordinated beamforming systems. We present a new coordinated beamforming technique for two receivers that is suitable for MIMO broadcast channels with signal and noise correlation at the receiver. We then apply this technique to the specific type of signal and noise correlation that occurs in the presence of receiver mutual coupling. Numerical results suggest that, even in the presence of strong coupling, most of the benefits of coordinated beamforming can be preserved by using appropriate matching networks and linear beamforming. Moreover, these benefits can be achieved even when feedback is limited.


  • Information Technology
  • Strong Coupling
  • Quantum Information
  • Full Article
  • Noise Correlation

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Authors’ Affiliations

Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA


© Yuhan Dong et al. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.