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In this paper, a novel algorithm is developed for the minimax design of IIR digital filters. Using a partial second-order factorization (PSOF), the denominator polynomial of an IIR digital filter is decomposed as a cascade of second-order factors (SOFs) and a single higher-order factor (HOF). This is inspired by the fact that, when some poles are closer to the boundary of the stability domain, the...
In this paper, a novel method is developed for the design of IIR digital filters in the minimax sense. The Steiglitz–McBride (SM) scheme is adopted in the proposed method to simplify the design procedure. But, different from traditional SM-based design approaches, our method decomposes the denominator polynomial of an IIR digital filter as a cascade of several second-order factors (SOFs) and a higher-order...
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