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Title:
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Wigner-Ville Spectrum Estimation via Wavelet Soft-Thresholding |
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Author:
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Baraniuk, Richard G.
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Type:
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Conference Paper |
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Citation:
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R. G. Baraniuk,"Wigner-Ville Spectrum Estimation via Wavelet Soft-Thresholding," in IEEE-SP International Symposium on Time-frequency and Time-scale Analysis,, pp. 452-455. |
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Abstract:
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The high noise sensitivity of the Wigner distribution makes smoothing a necessity for producing readable time-frequency images of noise corrupted signals. Since linear smoothing suppresses noise at the expense of considerable smearing of the signal components, we explore two nonlinear denoising techniques based on soft-thresholding in an orthonormal basis representation. Soft-thresholding provides considerable noise reduction without greatly impairing the time-frequency resolution of the denoised distribution. |
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Date Published:
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1994-10-01 |
