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Minimax design of two-channel nonuniform-division FIR filter banks with -1, 0, and +1 coefficients

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2 Author(s)
Ju-Hong Lee ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Ding-Chiang Tang

Utilizing an approximation scheme and a WLS algorithm, we present a method to design two-channel nonuniform-division filter (NDF) banks with continuous coefficients under the minimax criterion. It is shown that the optimal filter coefficients can be obtained by solving only linear equations. In conjunction with a proposed filter structure, a method is then presented to obtain the desired design result with filter coefficients taking on -1, 0, and +1 only. The effectiveness of the proposed technique is demonstrated by a simulation example

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Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on  (Volume:46 ,  Issue: 10 )