DocumentCode
312534
Title
Oversampled cosine modulated filter banks with linear phase
Author
Boleskei, H. ; Hlawatsch, Franz
Author_Institution
INTHFT, Wien Univ. of Technol., Austria
Volume
1
fYear
1997
fDate
9-12 Jun 1997
Firstpage
357
Abstract
We introduce oversampled cosine modulated filter banks (CMFBs) and a new classification of (oversampled or critically sampled) CMFBs as odd-stacked and even-stacked. We propose the new class of even-stacked CMFBs which allows both perfect reconstruction (PR) and linear phase filters in all channels. We formulate conditions for PR and show that any PR CMFB corresponds to a PR DFT filter bank with twice the oversampling factor. We also show that the frame-theoretic properties of a CMFB and of the corresponding DFT filter bank are closely related
Keywords
band-pass filters; delay circuits; filtering theory; signal sampling; even-stacked type; frame-theoretic properties; linear phase; linear phase filters; odd-stacked type; oversampled cosine modulated filter banks; oversampling factor; perfect reconstruction filters; Channel bank filters; Delay; Filter bank; Nonlinear filters; Phase modulation; Prototypes; Sampling methods; Signal analysis; Signal synthesis; Transfer functions;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN
0-7803-3583-X
Type
conf
DOI
10.1109/ISCAS.1997.608741
Filename
608741
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