# A general formulation of modulated filter banks

@article{Heller1999AGF, title={A general formulation of modulated filter banks}, author={P. Heller and T. Karp and T. Nguyen}, journal={IEEE Trans. Signal Process.}, year={1999}, volume={47}, pages={986-1002} }

This paper presents a general framework for maximally decimated modulated filter banks. The theory covers the known classes of cosine modulation and relates them to complex-modulated filter banks. The prototype filters have arbitrary lengths, and the overall delay of the filter bank is arbitrary, within fundamental limits. Necessary and sufficient conditions for perfect reconstruction (PR) are derived using the polyphase representation. It is shown that these PR conditions are identical for all… Expand

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