Title :
Design of optimal orthogonal tree-structured filter banks
Author :
Gandhi, Rajeev ; Mitra, Sanjit K.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
A number of techniques have been proposed for the design of tree-structured filter banks matched to the statistics of the input signal. Amongst all of the proposed techniques, a top-down design approach has been recognized as a computationally efficient method for the design of tree-structured filter banks. However, the conventional top-down technique is sub-optimal. In this paper, we modify the existing top-down design approach to deal with its suboptimal nature. Under certain assumptions, analytical expressions are derived for filter banks of unconstrained lengths that maximize the overall coding gain of the tree-structured filter bank
Keywords :
filtering theory; optimisation; coding gain; computationally efficient method; optimal tree-structured filter banks; orthogonal filter banks; statistics; top-down design approach; Algorithm design and analysis; Channel bank filters; Design methodology; Filter bank; Missiles; Signal design; Source coding; Statistics; Wavelet packets;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867818
