Title :
Design of signal-adapted linear phase paraunitary filter banks
Author :
Takeuchi, Tomoaki ; Nagai, Takayuki ; Ikehara, Masaaki
Author_Institution :
Dept. of Electr. Eng., Keio Univ., Yokohama, Japan
fDate :
31 May-3 Jun 1998
Abstract :
In this paper, we propose a new design method of signal-adapted filter banks using an adaptive cascade lattice structure. If the filter bank which is well adapted to the signal statistics is used in the subband coding system, we can encode the signal more efficiently than the case using non-adapted one. The purpose of this paper is to design the filter bank which has energy imbalance of each subband. We use the LMS-based adaptive algorithm to design linear phase paraunitary filter banks (LPPUFB) based on a lattice structure
Keywords :
adaptive filters; band-pass filters; cascade networks; delay circuits; digital filters; image coding; lattice filters; least mean squares methods; LMS-based adaptive algorithm; adaptive cascade lattice structure; energy imbalance; image processing; signal statistics; signal-adapted linear phase paraunitary filter banks; subband coding system; Adaptive algorithm; Channel bank filters; Cost function; Design methodology; Filter bank; Image coding; Image reconstruction; Lattices; Signal design; Statistics;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.694426
