DocumentCode
293023
Title
Quadrature modulated filter banks
Author
Chan, S.C.
Author_Institution
Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong
Volume
2
fYear
1994
fDate
30 May-2 Jun 1994
Firstpage
501
Abstract
This paper proposes a new family of perfect reconstruction (PR) filter banks called quadrature modulated filter banks (QMFB) by imposing structural constraints in the polyphase matrix. The single stage orthonormal QMFB is a complete modulated version of the two channel conjugate quadrature filters (CQF) because it is identical to the CQF when M=2. More general cascade linear phase orthogonal and nonorthogonal PR systems are also derived. In particular, we are able to obtain more general orthogonal and nonorthogonal versions of the Lapped Orthogonal Transform (LOT)
Keywords
Channel bank filters; Cities and towns; Discrete transforms; Filter bank; Finite impulse response filter; Image reconstruction; Mirrors; Nonlinear filters; Phase modulation; Prototypes;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location
London
Print_ISBN
0-7803-1915-X
Type
conf
DOI
10.1109/ISCAS.1994.409035
Filename
409035
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