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  • Research Article
  • Open Access

A Novel Approach to the Design of Oversampling Low-Delay Complex-Modulated Filter Bank Pairs

EURASIP Journal on Advances in Signal Processing20092009:692861

https://doi.org/10.1155/2009/692861

  • Received: 15 December 2008
  • Accepted: 9 September 2009
  • Published:

Abstract

In this contribution we present a method to design prototype filters of oversampling uniform complex-modulated FIR filter bank pairs. Especially, we present a noniterative two-step procedure: (i) design of analysis prototype filter with minimum group delay and approximately linear-phase frequency response in the passband and the transition band and (ii) Design of synthesis prototype filter such that the filter bank pairs distortion function approximates a linear-phase allpass function. Both aliasing and imaging are controlled by introducing sophisticated stopband constraints in both steps. Moreover, we investigate the delay properties of oversampling uniform complex-modulated FIR filter bank pairs in order to achieve the lowest possible filter bank delay. An illustrative design example demonstrates the potential of the design approach.

Keywords

  • Information Technology
  • Frequency Response
  • Quantum Information
  • Design Approach
  • Group Delay

Publisher note

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Authors’ Affiliations

(1)
Digital Signal Processing Group, Ruhr-Universität Bochum, 44780 Bochum, Germany

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