This paper proposes a novel iterative algorithm for optimal design of non-frequency-selective Finite Impulse Response(FIR) digital filters based on the windowing *** from the traditional optimization concept of adjust...
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This paper proposes a novel iterative algorithm for optimal design of non-frequency-selective Finite Impulse Response(FIR) digital filters based on the windowing *** from the traditional optimization concept of adjusting the window or the filter order in the windowing design of an FIR digital filter,the key idea of the algorithm is minimizing the approximationerror by succes-sively modifying the design result through an iterative procedure under the condition of a fixed window *** the iterative procedure,the known deviation of the designed frequency response in each iteration from the ideal frequency response is used as a reference for the next *** the approximationerror can be specified variably,the algorithm is applicable for the design of FIR digital filters with different technical requirements in the frequency domain.A design example is employed to illustrate the efficiency of the algorithm.
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