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

Abstract

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.

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Correspondence to Yuhan Dong.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Dong, Y., Domizioli, C.P. & Hughes, B.L. Effects of Mutual Coupling and Noise Correlation on Downlink Coordinated Beamforming with Limited Feedback. EURASIP J. Adv. Signal Process. 2009, 807830 (2009). https://doi.org/10.1155/2009/807830

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Keywords

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