DocumentCode
1167593
Title
On the Subband Orthogonality of Cosine-Modulated Filter Banks
Author
Lee, Kong A. ; Gan, Woon S.
Author_Institution
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ.
Volume
53
Issue
8
fYear
2006
Firstpage
677
Lastpage
681
Abstract
In this brief, the second-order characteristics of cosine-modulated filter banks are formulated and analyzed. We show that, for any type of input spectrum, adjacent subband signals of a cosine-modulated filter bank are properly phase-aligned in such a way that they are nearly orthogonal at zero lag even though they are not mutually exclusive. The orthogonal properties are desirable in reducing the computational complexity of subband processing systems
Keywords
channel bank filters; filtering theory; signal processing; computational complexity; cosine-modulated filter banks; orthogonal property; subband orthogonality; subband processing system; zero lag; Band pass filters; Channel bank filters; Digital signal processing; Equations; Filter bank; Filtering theory; Finite impulse response filter; Gallium nitride; Laboratories; Prototypes; Cosine-modulated filter banks; orthogonal; subband processing;
fLanguage
English
Journal_Title
Circuits and Systems II: Express Briefs, IEEE Transactions on
Publisher
ieee
ISSN
1549-7747
Type
jour
DOI
10.1109/TCSII.2006.876383
Filename
1683979
Link To Document