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.
weiss98c.pdf - Published Version
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)|
|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|
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