Title :
A novel lattice structure of M-channel paraunitary filter banks
Author :
Ikehara, Masaaki ; Kobayashi, Yuhiro
Author_Institution :
Dept. of Electron. & Electr. Eng., Keio Univ., Kanagawa, Japan
Abstract :
In this paper, we present a novel lattice structure of M-channel paraunitary filter banks. M-channel paraunitary filter banks without imposing the linear phase constraint outperform the linear phase paraunitary filter banks in image coding. Removing the redundancy of the lattice structure in filter banks, the complete and minimal structure is derived. Based on this structure, the pairwise mirror-image filter banks are also derived by restricting the rotation angles. Finally we show some examples to validate the proposed method.
Keywords :
channel bank filters; digital filters; image coding; lattice filters; M-channel paraunitary filter banks; complete minimal structure; image coding; lattice structure; pairwise mirror-image filter banks; redundancy; restricted rotation angles; Channel bank filters; Filter bank; Image coding; Lattices; OFDM modulation; Signal synthesis; Speech processing; Speech synthesis; Video compression; Video signal processing;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465580
