Abstract
In this paper we present a method of implementation of a normalized ARMA lattice filter using a CORDIC algorithm. Expansion of a previously proposed normalized AR lattice filter using the CORDIC algorithm for the purposes of its application to the normalized ARMA lattice filter is difficult due to problems related to the convergence magnitude of the rotation angle and the convergence speed. In this paper we demonstrate the possibility of overcoming the above-mentioned problems and of implementing a CORDIC ARMA lattice filter. Since the filter proposed in this work is implemented based on the CORDIC algorithm specifically adapted for the realization of the normalized ARMA lattice filter, it can be expected that it can be successively implemented in the form of a VLSI array. In addition, since such a filter performs the filtering by predicting the input signal, it can be used for the processing of unknown signals. This article also contains estimations of the effectiveness of the proposed method by experiments. © 2000 Scripta Technica, Electron Comm Jpn Pt 3, 84(4): 76–86, 2001
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