Title :
Lifting schemes for biorthogonal modulated filter banks
Author :
Karp, Tunju ; Mertins, Alfred
Author_Institution :
Mannheim Univ., Germany
Abstract :
We connect the design of biorthogonal modulated filter banks with the idea of lifting schemes, which were proposed for the construction of biorthogonal wavelets. Based on this formulation, we derive a lattice-like structure for the polyphase components. As the rotation-based structures for the design and implementation of paraunitary modulated filter banks, our structure automatically guarantees the perfect reconstruction (PR) property of the filter bank. The coefficients can be freely chosen and used for filter optimization
Keywords :
band-pass filters; circuit optimisation; filtering theory; lattice filters; modulation; signal reconstruction; wavelet transforms; biorthogonal modulated filter banks; biorthogonal wavelets; filter coefficients; filter optimization; lattice-like structure; lifting schemes; paraunitary modulated filter banks; perfect reconstruction property; polyphase components; rotation-based structures; Channel bank filters; Delay systems; Design optimization; Digital signal processing; Filter bank; Fourier transforms; Frequency; Propagation delay; Prototypes; Sparse matrices;
Conference_Titel :
Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on
Conference_Location :
Santorini
Print_ISBN :
0-7803-4137-6
DOI :
10.1109/ICDSP.1997.628142
