Design and implementation of cosine-modulated 2 dimensional perfect reconstruction FIR filter banks

    研究成果: Conference article査読

    抄録

    It is well known that FIR filter banks, satisfying the perfect reconstruction (PR) property, can be obtained by cosine modulation of linear-phase prototype FIR digital filter. In this paper, I show to be able to design 2-Dimensional (2-D) PR filter banks using cosine modulation as same as 1-D case. At first, I design a 2-D digital filter with half passband obtained by the sampling matrix. Next, 2-D analysis filter banks are realized by cosine-modulating this prototype 2-D digital filter. It is shown that the modulation in 2-D frequency plane is equivalent to the 1-D modulation. An necessary and sufficient condition for 2-D perfect reconstruction filter banks is derived. Furthermore I formulate the design method as a quadratic-constrained least-square minimization problem.

    本文言語English
    ページ(範囲)77-80
    ページ数4
    ジャーナルProceedings - IEEE International Symposium on Circuits and Systems
    2
    出版ステータスPublished - 1994 12 1
    イベントProceedings of the 1994 IEEE International Symposium on Circuits and Systems. Part 3 (of 6) - London, England
    継続期間: 1994 5 301994 6 2

    ASJC Scopus subject areas

    • 電子工学および電気工学

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