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Convergence Properties of a CORDIC-Based Adaptive ARMA Lattice Filter
Shin'ichi SHIRAISHI Miki HASEYAMA Hideo KITAJIMA
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/08/01
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Digital Signal Processing
convergence properties, adaptive lattice filter, ARMA lattice filter, CORDIC,
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This paper presents a theoretical convergence analysis of a CORDIC-based adaptive ARMA lattice filter. In previous literatures, several investigation methods for adaptive lattice filters have been proposed; however, they are available only for AR-type filters. Therefore, we have developed a distinct technique that can reveal the convergence properties of the CORDIC ARMA lattice filter. The derived technique provides a quantitative convergence analysis, which facilitates an efficient hardware design for the filter. Moreover, our analysis technique can be applied to popular multiplier-based filters by slight modifications. Hence, the presented convergence analysis is significant as a leading attempt to investigate ARMA lattice filters.