Design and lattice structure of FIR paraunitary filter banks with linear phase

Takayuki Nagai, C. W. Kok, Masaaki Ikehara, Truong Q. Nguyen

Research output: Contribution to journalArticle

11 Citations (Scopus)


In this paper, we present a novel way to design biorthogonal and paraunitary linear phase filter banks. The square error of the perfect reconstruction of the filter bank is expressed in quadratic form of filter coefficients and the cost function is minimized by solving linear equation iteratively without nonlinear optimization. With some modifications, this method is extended to the design of paraunitary filter banks. Furthermore, the lattice structure of odd-channel paraunitary filter banks is also derived. Design examples are given to validate the proposed method.

Original languageEnglish
Pages (from-to)712-720
Number of pages9
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Issue number4
Publication statusPublished - 1997 Jan 1



  • Filter banks
  • Lattice structure
  • Linear phase

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics

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