发明名称 |
Method and apparatus for reducing impulse noise in a signal processing system |
摘要 |
An observed signal that is corrupted with impulse noise is recorded in a signal processing system of an image processing system or a digital subscriber line (xDSL). The observed signal that is recorded by the signal processing system includes a noise component and data component. The signal processing system estimates the parameters of an alpha-stable distribution using a modified iteratively reweighted least squares (IRLS) technique. The estimated parameters define a probability density function that is used to model the noise component of the observed signal. Once the parameters of the alpha-stable distribution are estimated, the signal processing system uses them to estimate model coefficients of a non-linear prediction filter such as a Volterra filter. Using the model coefficients, the non-linear prediction filter estimates the data component of the observed signal.
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申请公布号 |
US2005058302(A1) |
申请公布日期 |
2005.03.17 |
申请号 |
US20040951797 |
申请日期 |
2004.09.29 |
申请人 |
XEROX CORPORATION. |
发明人 |
DANCE CHRISTOPHER R.;KURUOGLU ERCAN E. |
分类号 |
H04L25/03;(IPC1-7):H04B15/00 |
主分类号 |
H04L25/03 |
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