Performance limitations of subband adaptive filters

Stephan Weiss, Robert Stewart, Alexander Stenger, Rudolf Rabenstein

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

10 Citations (Scopus)


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.
Original languageEnglish
Title of host publicationSignal Processing IX Theories and Applications
Subtitle of host publicationProceedings of Eusipco-98, Ninth European Signal Processing Conference
Number of pages4
Publication statusPublished - 1998
Event9th European Signal Processing Conference - Rhodes, Greece
Duration: 8 Sep 199811 Sep 1998


Conference9th European Signal Processing Conference


  • subband adaptive filters
  • performance limitations
  • modulated filter bank


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