On implementation and design of filter banks for subband adaptive systems
Weiss, Stephan and Harteneck, M and Stewart, Robert (1998) On implementation and design of filter banks for subband adaptive systems. In: IEE Colloquium on Digital Filters: An Enabling Technology, 1998-04-20 - 1998-04-20.
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This paper introduces a polyphase implementation and design of an oversampled K-channel generalized DFT (GDFT) filter bank, which can be employed for subband adaptive filtering, and therefore is required to have a low aliasing level in the subband signals. A polyphase structure is derived which can be factorized into a real valued polyphase network and a GDFT modulation. For the latter, an FFT realization may be used, yielding a highly efficient polyphase implementation for arbitrary integer decimation ratios N les;K. We also present an analysis underlining the efficiency of complex valued subband processing. The design of the filter bank is completely based on the prototype filter and solved using a fast converging iterative least squares method, for which we give examples. The design specifications closely correspond with performance limits of subband adaptive filtering, which are under-pinned by simulation results.
| Author(s): | Weiss, Stephan  ORCID: https://orcid.org/0000-0002-3486-7206, Harteneck, M and Stewart, Robert ORCID: https://orcid.org/0000-0002-7779-8597 | Item type: | Conference or Workshop Item(Paper) |
|---|---|
| ID code: | 32648 |
| Keywords: | adaptive filters, computational complexity, filtering theory, filter banks, implementation, design, subband adaptive system, 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 10:14 |
| Last modified: | 21 Jan 2020 19:46 |
| URI: | https://strathprints.strath.ac.uk/id/eprint/32648 |
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