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Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering

Weiss, Stephan and Lampe, Lutz and Stewart, Robert (1998) Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering. In: 1st International Symposium on Communication Systems and Digital Signal Processing, 1998-04-06 - 1998-04-08, Sheffield.

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    Abstract

    In this paper, we discuss efficient methods to implement correlation type algorithms in subbands. Based on a polyphase representation, a modulated GDFT filter bank with arbitrary integer decimation ratio can be performed at minimum cost, yielding complex subband signals. Real valued subbands can be achieved by appropriate postprocessing of the complex filter bank. Algorithm specific, complex or real implementation may be better suited, for which we present criteria. For the example of subband adaptive filtering as applied in acoustic echo cancellation, we compare a number of algorithms with respect to their best implementation.

    Item type: Conference or Workshop Item (Paper)
    ID code: 32633
    Keywords: filter banks, subbands, acoustic echo cancellation, polyphase representation, Electrical engineering. Electronics Nuclear engineering
    Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
    Department: Faculty of Engineering > Electronic and Electrical Engineering
    Related URLs:
      Depositing user: Pure Administrator
      Date Deposited: 31 Aug 2011 10:04
      Last modified: 18 Jul 2013 05:45
      URI: http://strathprints.strath.ac.uk/id/eprint/32633

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