Title :
An efficient algorithm to design weighted minimax perfect reconstruction quadrature mirror filters
Author :
Goh, Chee-Kiang ; Lim, Yong-Ching
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
An efficient algorithm is presented in this paper to design lattice-type perfect reconstruction quadrature mirror filters (PR-QMF). Our proposed iterative algorithm designs the lattice coefficients of the filter bank directly, with flexible control of the filters´ stop-band ripple profiles. Typically, only a few iterations of our algorithm are needed to converge to an optimal solution in the weighted minimax sense. A procedure to obtain the lattice coefficients of PR-QMF banks yielding near linear phase filters is presented
Keywords :
band-stop filters; circuit optimisation; delay circuits; iterative methods; lattice filters; minimax techniques; quadrature mirror filters; iterative algorithm; lattice coefficients; lattice-type perfect reconstruction quadrature mirror filters; near linear phase filters; optimal solution; stop-band ripple profiles; weighted minimax sense; Algorithm design and analysis; Filter bank; Finite impulse response filter; Image coding; Image reconstruction; Iterative algorithms; Lattices; Minimax techniques; Mirrors; Nonlinear filters;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.612804
