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Minimax design of IIR digital filters using a sequential constrained least-squares method based on GN strategy

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3 Author(s)
Luo Jiahao ; Inst. of Inf. & Control, Hangzhou Dianzi Univ., Hangzhou, China ; Lai Xiaoping ; Hou Xiuzhu

The optimal design of infinite impulse response (IIR) digital filters is usually a nonconvex problem, and thus has many local optimal solutions. A new method that combines Gauss-Newton strategy with the sequential constraint minimization procedure is proposed in this paper to convert the minimax design of IIR digital filters into a sequence of convex sub-problems. Compared with some recent design methods, this method can decrease the frequency response error and the group-delay error near the passband edges. Simulation examples illustrate the effectiveness of the proposed algorithm.

Published in:

Control Conference (CCC), 2011 30th Chinese

Date of Conference:

22-24 July 2011