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  • Research Article
  • Open Access

A Robust Capon Beamformer against Uncertainty of Nominal Steering Vector

EURASIP Journal on Advances in Signal Processing20062006:062327

  • Received: 21 April 2005
  • Accepted: 21 October 2005
  • Published:


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.


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

Authors’ Affiliations

Center for Signal Processing, Nanyang Technological University, Singapore, 639798
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798


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© Yu and Er 2006