Title :
A simplified lattice factorization for linear-phase paraunitary filter banks with pairwise mirror image frequency responses
Author :
Gan, Lu ; Ma, Kai-Kuang
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
In this paper, by simplifying the lattice proposed by Nguyen et al. (1999), a new factorization for linear-phase paraunitary filter banks (LPPUFBs) with pairwise mirror image (PMI) frequency responses is developed. The new structure covers the same class of PMI LPPUFBs as the original lattice while substantially reducing the free parameters involved in nonlinear optimization. A design example is presented to demonstrate the effectiveness of the new structure.
Keywords :
filtering theory; frequency response; lattice filters; linear phase filters; matrix algebra; lattice factorization; linear-phase paraunitary filter banks; matrix parameterization; nonlinear optimization; pairwise mirror image frequency responses; Channel bank filters; Filter bank; Floors; Frequency; Gallium nitride; Image processing; Lattices; Mirrors;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205826
