On the Subband Orthogonality of Cosine-Modulated Filter Banks

Kong A. Lee; Woon S. Gan

doi:10.1109/TCSII.2006.876383

On the Subband Orthogonality of Cosine-Modulated Filter Banks

Kong A. Lee, Woon S. Gan

Research output: Journal article publication › Journal article › Academic research › peer-review

18 Citations (Scopus)

Abstract

In this brief, the second-order characteristics of co-sine-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.

Original language	English
Pages (from-to)	677-681
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	53
Issue number	8
DOIs	https://doi.org/10.1109/TCSII.2006.876383
Publication status	Published - Aug 2006
Externally published	Yes

Keywords

Cosine-modulated filter banks
orthogonal
subband processing

ASJC Scopus subject areas

Electrical and Electronic Engineering

More information

10.1109/TCSII.2006.876383

Cite this

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AB - In this brief, the second-order characteristics of co-sine-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.

KW - Cosine-modulated filter banks

KW - orthogonal

KW - subband processing

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DO - 10.1109/TCSII.2006.876383

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On the Subband Orthogonality of Cosine-Modulated Filter Banks

Abstract

Keywords

ASJC Scopus subject areas

More information

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