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Performance limitations of subband adaptive filters

Weiss, Stephan and Stewart, Robert and Stenger, Alexander and Rabenstein, Rudolf (1998) Performance limitations of subband adaptive filters. In: 9th European Signal Processing Conference, 1998-09-08 - 1998-09-11, Rhodes.

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Abstract

In this paper, we evaluate the performance limitations of subband adaptive filters in terms of achievable final error terms. The limiting factors are the aliasing level in the subbands, which poses a distortion and thus presents a lower bound for the minimum mean squared error in each subband, and the distortion function of the overall filter bank, which in a system identification setup restricts the accuracy of the equivalent fullband model. Using a generalized DFT modulated filter bank for the subband decomposition, both errors can be stated in terms of the underlying prototype filter. If a source model for coloured input signals is available, it is also possible to calculate the power spectral densities in both subbands and reconstructed fullband. The predicted limits of error quantities compare favourably with simulations presented.

Item type: Conference or Workshop Item (Paper)
ID code: 32615
Keywords: subband adaptive filters , performance limitations, modulated filter bank , Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Depositing user: Pure Administrator
Date Deposited: 31 Aug 2011 09:38
Last modified: 27 Mar 2015 15:27
URI: http://strathprints.strath.ac.uk/id/eprint/32615

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