Linear phase paraunitary filter banks: theory, factorizations and designs
نویسندگان
چکیده
منابع مشابه
Linear phase paraunitary filter banks: theory, factorizations and designs
-M channel maximally decimated filter banks have been used in the past to decompose signals into subbands. The theory of perfect-reconstruction filter banks has also been studied extensively. Nonparaunitary systems with linear phase filters have also been designed. In this paper, we study paraunitary systems in which each individual filter in the analysis synthesis banks has linear phase. Speci...
متن کاملStructures and Factorizations for Non Critically Decimated Paraunitary Filter Banks Yielding Linear Phase Filters
In this paper, we extend structures and factorizations for paraunitary filter banks yielding linear phase filters [1] to the oversampled case. We derive minimal factorizations for a subset of these banks, and propose some design examples.
متن کاملFurther results on DCT-based linear phase paraunitary filter banks
A DCT-based simplified general structure for linear phase paraunitary filter bank (LPPUFB) is developed recently by the preand post-processing of the DCT in the time domain. The new structure can be viewed as the dual of the generalized LOT (GenLOT). In this paper, we generalize the result to odd-channel LPPUFB and LPPUFB with pair-wise mirror image property. Design examples and their applicati...
متن کاملOn orthonormal wavelets and paraunitary filter banks
Binary tree-structured filter banks have been employed in the past to generate wavelet bases. While the relation between paraunitary filter banks and orthonormal bases is known to some extent, there are some extensions which are either not known, or not published so far. In particular it is known that a binary tree-structured filter bank with the same paraunitary polyphase matrix on all levels ...
متن کاملA Split-Radix DCT Base Structure for Linear Phase Paraunitary Filter Banks
In this study, base on traditional lapped transform’s properties, inherit from some of the special characteristic properties of discrete cosine transform, trigonometric identities and the structure of linear phase filter banks. We present some theoretic properties in the generalized structure of linear phase paraunitary filter bank and build some examples corresponding to these properties. Thes...
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ژورنال
عنوان ژورنال: IEEE Transactions on Signal Processing
سال: 1993
ISSN: 1053-587X
DOI: 10.1109/78.258087