Title :
A simplified lattice factorization for linear-phase perfect reconstruction filter bank
Author :
Gan, Lu ; Ma, Kai-Kuang
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
fDate :
7/1/2001 12:00:00 AM
Abstract :
We propose a simplified version of lattice factorization for linear-phase perfect reconstruction filter bank (LPPRFB) derived by T.D. Tran et al. (see IEEE Trans. Signal Processing. vol.48, no.1, p.133-47, Jan. 2000). The proposed new lattice structure spans the same class of LPPRFB, while substantially reducing free parameters in nonlinear optimization and saving computation cost in hardware implementation. To further address the importance of our proposed structure, we generalize our factorization to multidimensional LPPRFB (MD-LPPRFB), and show its effectiveness.
Keywords :
channel bank filters; lattice filters; linear phase filters; matrix decomposition; multidimensional signal processing; signal reconstruction; hardware implementation; linear-phase perfect reconstruction filter bank; multidimensional filter bank; nonlinear optimization; simplified lattice factorization; Computational efficiency; Cost function; Delay; Filter bank; Gallium nitride; Hardware; Image coding; Image reconstruction; Lattices; Multidimensional systems;
Journal_Title :
Signal Processing Letters, IEEE
