| 时域约束FIR滤波器设计的IRCLS算法 |
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| 引用本文： | 程昀,赖晓平.时域约束FIR滤波器设计的IRCLS算法[J].山东大学学报(工学版),2004,34(4):16-20. |
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| 作者姓名： | 程昀 赖晓平 |
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| 作者单位： | 山东大学威海分校,信息科学与控制工程系,山东,威海,264209 |
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| 基金项目： | 国家自然科学基金项目 (60 2 75 0 0 6)，山东省自然科学基金项目 (Y2 0 0 1G0 8) |
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| 摘 要： | 考虑了带有时域约束的线性相位FIR滤波器的Minimax设计问题 .将设计问题转化为迭代地求解一系列约束加权最小二乘逼近问题 ,在迭代过程中利用逼近误差的包络线对权函数进行更新 .迭代过程收敛后 ,得到一个准Minimax解 .将此方法应用于阶跃响应受约束的FIR滤波器以及Nyquist滤波器的设计 ,设计例子说明了所提设计方法的有效性 .
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| 关 键 词： | FIR滤波器 Minimax设计 加权最小二乘 阶跃响应 Nyquist滤波器 |
| 文章编号： | 1672-3961(2004)04-0016-05 |
| 修稿时间： | 2004年2月12日 |
IRCLS algorithm for design of FIR filters with time-domain constraints |
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| CHENG Yun,LAI Xiao-ping.IRCLS algorithm for design of FIR filters with time-domain constraints[J].Journal of Shandong University of Technology,2004,34(4):16-20. |
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| Authors: | CHENG Yun LAI Xiao-ping |
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| Abstract: | Minimax design of linear phase FIR filters with time-domain constraints is considered in this paper. The design is accomplished by solving a sequence of constrained weighted least-squares problems iteratively. During the iteration,the weighting function is updated using the envelope of the approximation error. After the process converges,a quasi-minimax solution is obtained. The method is applied to the design of FIR Nyquist filters and FIR filters with step response constraints. Simulation examples demonstrate the effectiveness of the design method. |
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| Keywords: | FIR filter chebyshev design weighted least-squares step response Nyquist filter |
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