On the analysis and fast implementation of oversampled modulated filter banks

Research output: Contribution to conferencePaper

Abstract

Oversampled modulated filter banks (OSFBs) play an important role in reducing the computational cost of numerically intensive problems. The concern of this paper is an efficient implementation of the OSFB itself. The proposed method is based on a polyphase description to remove redundancies in the filter operations. Using OSFBs that are modulated from a prototyep filter, a factorisation can be obtained which depends on the filter coefficients the prototype filter and the modulating transform only. Based on a state-space representation of this polyphase factorisation, signal flow graphs can be obtained by minor modifications, which allow us a very simple and efficient implementation of OSFBs. A comparison to existing methods is drawn.

Conference

Conference5th International Conference on Mathematics in Signal Processing
CountryUnited Kingdom
CityUniversity of Warwick
Period18/12/0020/12/00

Fingerprint

Filter banks
Factorization
Signal flow graphs
Redundancy
Costs

Keywords

  • oversampled modulated filter banks
  • filter banks
  • signal processing
  • polyphase analysis

Cite this

Weiss, S. (2000). On the analysis and fast implementation of oversampled modulated filter banks. Paper presented at 5th International Conference on Mathematics in Signal Processing, University of Warwick, United Kingdom.
Weiss, Stephan. / On the analysis and fast implementation of oversampled modulated filter banks. Paper presented at 5th International Conference on Mathematics in Signal Processing, University of Warwick, United Kingdom.12 p.
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abstract = "Oversampled modulated filter banks (OSFBs) play an important role in reducing the computational cost of numerically intensive problems. The concern of this paper is an efficient implementation of the OSFB itself. The proposed method is based on a polyphase description to remove redundancies in the filter operations. Using OSFBs that are modulated from a prototyep filter, a factorisation can be obtained which depends on the filter coefficients the prototype filter and the modulating transform only. Based on a state-space representation of this polyphase factorisation, signal flow graphs can be obtained by minor modifications, which allow us a very simple and efficient implementation of OSFBs. A comparison to existing methods is drawn.",
keywords = "oversampled modulated filter banks , filter banks, signal processing, polyphase analysis",
author = "Stephan Weiss",
year = "2000",
language = "English",
note = "5th International Conference on Mathematics in Signal Processing ; Conference date: 18-12-2000 Through 20-12-2000",

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Weiss, S 2000, 'On the analysis and fast implementation of oversampled modulated filter banks' Paper presented at 5th International Conference on Mathematics in Signal Processing, University of Warwick, United Kingdom, 18/12/00 - 20/12/00, .

On the analysis and fast implementation of oversampled modulated filter banks. / Weiss, Stephan.

2000. Paper presented at 5th International Conference on Mathematics in Signal Processing, University of Warwick, United Kingdom.

Research output: Contribution to conferencePaper

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T1 - On the analysis and fast implementation of oversampled modulated filter banks

AU - Weiss, Stephan

PY - 2000

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N2 - Oversampled modulated filter banks (OSFBs) play an important role in reducing the computational cost of numerically intensive problems. The concern of this paper is an efficient implementation of the OSFB itself. The proposed method is based on a polyphase description to remove redundancies in the filter operations. Using OSFBs that are modulated from a prototyep filter, a factorisation can be obtained which depends on the filter coefficients the prototype filter and the modulating transform only. Based on a state-space representation of this polyphase factorisation, signal flow graphs can be obtained by minor modifications, which allow us a very simple and efficient implementation of OSFBs. A comparison to existing methods is drawn.

AB - Oversampled modulated filter banks (OSFBs) play an important role in reducing the computational cost of numerically intensive problems. The concern of this paper is an efficient implementation of the OSFB itself. The proposed method is based on a polyphase description to remove redundancies in the filter operations. Using OSFBs that are modulated from a prototyep filter, a factorisation can be obtained which depends on the filter coefficients the prototype filter and the modulating transform only. Based on a state-space representation of this polyphase factorisation, signal flow graphs can be obtained by minor modifications, which allow us a very simple and efficient implementation of OSFBs. A comparison to existing methods is drawn.

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M3 - Paper

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Weiss S. On the analysis and fast implementation of oversampled modulated filter banks. 2000. Paper presented at 5th International Conference on Mathematics in Signal Processing, University of Warwick, United Kingdom.