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Numerically stable algorithm for computing Wigner-Ville distribution
Ravi Shanmuga Sundaram, K. M.Muraleedhara Prabhu
Published in
1997
Volume: 144
   
Issue: 1
Pages: 46 - 48
Abstract
The Wigner-Ville distribution (WVD) is a particularly useful technique for analysing nonstationary signals and has been studied extensively in recent years. An algorithm has been proposed for computing WVD requiring only real operations, but involving division by sine and cosine factors. However, this causes numerical instabilities because of roundoff errors in finite length registers. The authors present a fast and numerically stable algorithm for computing the WVD. The computational complexity of the proposed algorithm is also derived and compared with existing algorithms. © IEE, 1996.
About the journal
JournalIEE Proceedings: Vision, Image and Signal Processing
ISSN1350245X
Open AccessNo
Concepts (7)
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    Algorithms
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    Computational complexity
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    Convergence of numerical methods
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    Mathematical transformations
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    NONSTATIONARY SIGNALS
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    WIGNER-VILLE DISTRIBUTION (WVD)
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    Signal processing