Theory and lattice structure of complex paraunitary filterbanks with filters of (Hermitian-)symmetry/antisymmetry properties

被引:19
作者
Gao, XQ
Nguyen, TQ
Strang, G
机构
[1] MIT, Dept Math, Cambridge, MA 02139 USA
[2] Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA
关键词
D O I
10.1109/78.917806
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The theory of the real-coefficient linear-phase filterbank (LPFB) is extended to the complex case in two ways, leading to two generalized classes of M-channel filterbanks. One is the symmetric/antisymmetric filterbank (SAFB), where all filters are symmetric or antisymmetric. The other is the complex linear phase filterbank (CLPFB), where all filters are Hermitian symmetric or Hermitian antisymmetric and, hence, have the linear-phase property. Necessary conditions on the filter symmetry polarity and lengths for the existence of permissible solutions are investigated. Complete and minimal lattice structures are developed for the paraunitary SAFE and paraunitary CLPFB, where the channel number M is arbitrary (even or odd), and the subband filters could have different lengths. With the elementary unitary matrices in the structure of the paraunitary SAFE constrained to be real and orthogonal, the structure covers the most general real-coefficient paraunitary LPFBs. Compared with the existing results, the number of parameters is reduced significantly.
引用
收藏
页码:1028 / 1043
页数:16
相关论文
共 36 条
[1]   Hermite reduction methods for generation of a complete class of linear-phase perfect reconstruction filter banks - Part I: Theory [J].
Basu, S ;
Choi, HM .
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 1999, 46 (04) :434-447
[2]   COMPLEX, LINEAR-PHASE FILTERS FOR EFFICIENT IMAGE-CODING [J].
BELZER, B ;
LINA, JM ;
VILLASENOR, J .
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1995, 43 (10) :2425-2427
[3]  
CHEN L, 1995, IEEE T SIGNAL PROCES, V43, P2505
[4]   A generalized algorithm for linear-phase paraunitary filter banks [J].
Chen, L ;
Chan, KP ;
Nguyen, TQ .
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1998, 46 (04) :1154-1158
[5]   BIORTHOGONAL BASES OF COMPACTLY SUPPORTED WAVELETS [J].
COHEN, A ;
DAUBECHIES, I ;
FEAUVEAU, JC .
COMMUNICATIONS ON PURE AND APPLIED MATHEMATICS, 1992, 45 (05) :485-560
[6]  
COOKLEV T, 1996, P EUSIPCO, P763
[7]   Factoring wavelet transforms into lifting steps [J].
Daubechies, I ;
Sweldens, W .
JOURNAL OF FOURIER ANALYSIS AND APPLICATIONS, 1998, 4 (03) :247-269
[8]   The GenLOT: Generalized linear-phase lapped orthogonal transform [J].
deQueiroz, RL ;
Nguyen, TQ ;
Rao, KR .
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1996, 44 (03) :497-507
[9]   The theory and implementation of arbitrary-length linear-phase cosine-modulated filter bank [J].
Gao, XQ ;
He, ZY ;
Xia, XG .
SIGNAL PROCESSING, 2000, 80 (05) :889-896
[10]  
Horn R. A., 1990, MATRIX ANAL