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Published April 1988 | Published
Book Section - Chapter Open

Improved approach for design of perfect reconstruction FIR QMF banks, with lossless lattice structures

Abstract

A property of FIR (finite-impulse response) lossless systems is introduced, leading to substantial improvement in the sign procedure for perfect-reconstruction QMF (quadrature mirror filter) banks. The property enables the designer to initialize the coefficients of a lattice structure (which characterizes the analysis bank), in such a way as to speed up to the convergence. A design example is provided. Compared to other methods, the proposed method is shown to converge faster, and always leads to much improved attenuation characteristics for a given filter length.

Additional Information

© 1988 IEEE. Work supported in part by the National Science Foundation grants DCI 8552579 and MIP 8604456.

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