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  • 标题:A Novel Approach to the Design of Oversampling Low-Delay Complex-Modulated Filter Bank Pairs
  • 本地全文:下载
  • 作者:Thomas Kurbiel (EURASIP Member) ; Heinz G. Göckler (EURASIP Member) ; Daniel Alfsmann (EURASIP Member)
  • 期刊名称:EURASIP Journal on Advances in Signal Processing
  • 印刷版ISSN:1687-6172
  • 电子版ISSN:1687-6180
  • 出版年度:2009
  • 卷号:2009
  • DOI:10.1155/2009/692861
  • 出版社:Hindawi Publishing Corporation
  • 摘要:

    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.

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