Title :
Minimax design of two-channel nonuniform-division FIR filter banks with -1, 0, and +1 coefficients
Author :
Lee, Ju-Hong ; Tang, Ding-Chiang
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
10/1/1999 12:00:00 AM
Abstract :
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
Keywords :
FIR filters; channel bank filters; digital filters; least squares approximations; minimax techniques; WLS algorithm; approximation scheme; continuous coefficients; filter structure; linear equations; minimax criterion; two-channel nonuniform-division FIR filter banks; Algorithm design and analysis; Approximation algorithms; Design methodology; Equations; Filter bank; Filtering algorithms; Finite impulse response filter; Frequency; Minimax techniques; Nonlinear filters;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
