Title :
A new approach to the design of FIR perfect reconstruction QMF banks
Author :
Koilpillai, R.D. ; Vaidyanathan, P.P.
Author_Institution :
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A design method for perfect reconstruction quadrature mirror filter (PR-QMF) banks based on obtaining good initializing points is presented. For the two-channel PR-QMF design, the initializing point is obtained from a traditional QMF design, while in the M-channel case (M>2), it is obtained from a pseudo-QMF design. In both cases, the parameters of the corresponding PR-QMF bank (lattice implementation) are initialized. This leads to considerably faster convergence of the optimization. Design examples are included
Keywords :
digital filters; filtering and prediction theory; FIR filters; QMF banks; convergence; design method; lattice implementation; multichannel design; optimization; perfect reconstruction; quadrature mirror filter; Circuit analysis; Circuit synthesis; Convergence; Design methodology; Design optimization; Finite impulse response filter; Image reconstruction; Integrated circuit synthesis; Lattices; Transfer functions;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.111936
