| 最优多步长自适应滤波 |
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| 引用本文： | 罗忠,谢永斌,朱重光.最优多步长自适应滤波[J].信号处理,1997(2). |
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| 作者姓名： | 罗忠 谢永斌 朱重光 |
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| 作者单位： | 中科院遥感所图象室(罗忠，朱重光)，西安工业学院(谢永斌) |
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| 摘 要： | 本文研究具有最优下降步长序列的自适应滤波。最优一词此处系指：①对于给定的均方误差的初值，使均方误差经给走次数学习后达到最小；②对于均方误差的给定初值和终值，经过最少次数的学习，均方误差由初值下降至终值。对于①②两种不同意义的最优，我们采用动态规划和对数比例分割方法来求各自的最优步长序列。同时提供一组仿真结果。
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| 关 键 词： | 自适应滤波 最优步长 均方误差 动态规划 |
Optimal Multi-step-Size Adaptive Filtering |
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| Luo Zhong, Xie Yongbin, Zhu Chongguang.Optimal Multi-step-Size Adaptive Filtering[J].Signal Processing,1997(2). |
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| Authors: | Luo Zhong Xie Yongbin Zhu Chongguang |
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| Affiliation: | Luo Zhong; Xie Yongbin; Zhu Chongguang |
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| Abstract: | An adaptive filtering with optimal step-size, sequence is considered in this contribution. The meaning of optimality here is: (1) for given initial value of MSE, MSE reduces to a minimal value, (2) for given initial and final values of MSE, the number of adaptations needed for MSE to fall from the initial value to the final one is the smallest We employ. dynamic programming and logailthmic scale pantition to davlop optimal step-size sequences for (1) and (2) respectively A set of simulation results are giren. |
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| Keywords: | adaptive filtering optimal step-size mean-square-error dynamic programming |
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