Title :
Design of two-channel FIR QMF banks satisfying prescribed specifications
Author :
Tawfik, Ayman ; Abdel-Raheem, Esam
Author_Institution :
Electron. & Commun. Eng. Dept., Ain Shams Univ., Cairo, Egypt
Abstract :
A method is proposed for the design of two-channel linear-phase FIR QMF banks satisfying prescribed reconstruction and stopband errors. The method is integrated with a weighted minimax design of QMF banks based on an iterative method proposed by Chen and Lee (1992) with certain modifications based on the weighted least-squares (WLS) updating scheme proposed by Sunder and Ramachandran (1994). The method is simple and a design example is presented
Keywords :
FIR filters; channel bank filters; equiripple filters; iterative methods; least squares approximations; linear phase filters; minimax techniques; quadrature mirror filters; iterative method; reconstruction; stopband errors; two-channel linear-phase FIR QMF banks; weighted least-squares updating scheme; weighted minimax design; Channel bank filters; Design engineering; Finite impulse response filter; Frequency response; Image reconstruction; Minimax techniques; Mirrors; Phase distortion; Signal synthesis; Transfer functions;
Conference_Titel :
Radio Science Conference, 1998. NRSC '98. Proceedings of the Fifteenth National
Conference_Location :
Cairo
Print_ISBN :
0-7803-5121-5
DOI :
10.1109/NRSC.1998.711468
