LAI Xiaoping, ZHAO Ruijie. Minimax Design of Time-domain Constrained FIR Filters by a Sequential Constrained Least-Square Method[J]. Chinese Journal of Electronics, 2009, 18(1): 166-170.
Citation: LAI Xiaoping, ZHAO Ruijie. Minimax Design of Time-domain Constrained FIR Filters by a Sequential Constrained Least-Square Method[J]. Chinese Journal of Electronics, 2009, 18(1): 166-170.

Minimax Design of Time-domain Constrained FIR Filters by a Sequential Constrained Least-Square Method

  • Received Date: 2008-01-01
  • Rev Recd Date: 2008-08-01
  • Publish Date: 2009-02-15
  • Since minimax FIR filters with timedomain constraints may not satisfy the alternating theorem, the Remez-type exchange algorithms are not guaranteed to converge or may not converge to optimal filters.A Sequential constrained least-square (SCLS) method converts a constrained minimax problem into a series of Constrained least-square (CLS) problems with unique solutionswhich positively converge to one of the minimax solutions.This paper presents an SCLS method for the minimax design of FIR filters with time-domain constraints. The effectiveness and effciency of the SCLS method are demonstrated by design examples of Nyquist, and step-responseconstrained FIR filters in comparison with several existingmethods.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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