A design of linear-phased IIR Nyquist filters |
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Authors: | Seung Joo Maeng Byeong Gi Lee |
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Affiliation: | Dept. of Electron. Eng., Seoul Nat. Univ.; |
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Abstract: | This paper discusses a new method of designing linear-phased IIR Nyquist filters with zero intersymbol interference. The filters designed by this method possess linear-phase characteristics and are lower in order than other Nyquist filters designed by existing methods. Expressions are derived for zero-phased IIR Nyquist filters and efficient design methods are examined for them. The opted design method is based on an iteration process, and in each iteration step a modified version of the Remez exchange algorithm is used. In addition, the implementation of the designed zero-phased IIR filters is considered. Finally, the proposed design method is demonstrated through various design examples |
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