Journal
IEEE SIGNAL PROCESSING LETTERS
Volume 15, Issue -, Pages 733-736Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSP.2008.2001115
Keywords
Adaptive arrays; array signal processing; mathematical programming; parameter estimation; robustness
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Funding
- Natural Science and Engineering Research Council (NSERC) of Canada
- Alberta Ingenuity Foundation, Alberta, Canada
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A new approach to the design of robust adaptive beamforming is introduced. The essence of the new approach is to estimate the difference between the actual and presumed steering vectors and to use this difference to correct the erroneous presumed steering vector. The estimation process is performed iteratively where a quadratic convex optimization problem is solved at each iteration. Contrary to the worst-case performance-based and the probability-constrained-based approaches, our approach does not make any assumptions on either the norm of the mismatch vector or its probability distribution. Hence, it avoids the need for estimating their values.
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