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A Robust Capon Beamformer against Uncertainty of Nominal Steering Vector

Abstract

A robust Capon beamformer (RCB) against the uncertainty of nominal array steering vector (ASV) is formulated in this paper. The RCB, which can be categorized as diagonal loading approach, is obtained by maximizing the output power of the standard Capon beamformer (SCB) subject to an uncertainty constraint on the nominal ASV. The bound of its output signal-to-interference-plus-noise ratio (SINR) is also derived. Simulation results show that the proposed RCB is robust to arbitrary ASV error within the uncertainty set.

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Correspondence to Zhu Liang Yu.

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Yu, Z.L., Er, M.H. A Robust Capon Beamformer against Uncertainty of Nominal Steering Vector. EURASIP J. Adv. Signal Process. 2006, 062327 (2006). https://doi.org/10.1155/ASP/2006/62327

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Keywords

  • Information Technology
  • Output Power
  • Quantum Information
  • Steering Vector
  • Diagonal Loading