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| Robust Time Delay Estimation Using Variable Step-Size Affine Projection Algorithm with M-estimators |
| Jia Chong; Guo Ming-xi;Zhang Xiong-wei |
| Institute of Communications Engineering, PLA Univ. of Sci. & Tech., Nanjing 210007, China |
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Abstract Robust time delay estimation is proposed using variable step-size affine projection algorithm with M-estimators. The novel algorithm, using the structure of adaptive filter and M-estimators, is free of the assumption that the statistical characteristics of singal and noise is known. Simulation experiments under three different noise environments, Gaussian, non-Gaussian and impulse noise, are conducted to compare with the proposed TDE method using the existing Higher-Order Spectra(HOS) and Least Mean Square(LMS), and the result showes that the proposed TDE method is more robust and precision.
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Received: 03 November 2006
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2008, Vol. 30 
