| 基于LMS算法的多点滑动DFT方法 |
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| 引用本文： | 李春宇,张晓林. 基于LMS算法的多点滑动DFT方法[J]. 电子学报, 2010, 38(10): 2422-2425 |
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| 作者姓名： | 李春宇 张晓林 |
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| 作者单位： | 北京电子技术应用研究所;北京航空航天大学电子信息工程学院; |
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| 摘 要： | 根据自适应LMS法,LMS谱分析器可以通过递归运算完成滑动窗口中数据的DFT运算.本文推导了LMS算法及多点滑动DFT运算之间的关系式,并由此提出了一种基于LMS算法的多点滑动DFT运算方法.文章在理论推导的同时,进行了计算机仿真验证.该方法使用方便,可灵活适用于不同的滑动窗口大小及滑动步长参数.
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| 关 键 词： | DFT 最小均方算法 滑动窗 |
| 收稿时间： | 2009-03-08 |
Multisample-Based Sliding-DFT Method Based on LMS Algorithm |
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| LI Chun-yu,ZHANG Xiao-lin. Multisample-Based Sliding-DFT Method Based on LMS Algorithm[J]. Acta Electronica Sinica, 2010, 38(10): 2422-2425 |
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| Authors: | LI Chun-yu ZHANG Xiao-lin |
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| Affiliation: | LI Chun-yu1,ZHANG Xiao-lin2(1.Beijing Institute of Electronics Technology Application,Beijing 100091,China,2.School of Electronic Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China) |
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| Abstract: | Based on the adaptive least mean squares algorithm,the LMS spectrum analyzer can be applied to recursively compute the discrete Fourier transform of a sliding window of data.In this paper,a LMS-based method for calculating multisample-based sliding-DFT is proposed.The method establishes the relationship between LMS algorithm and sliding-DFT when new multisamples come into the sliding window for DFT.The inferential formula is deduced,meanwhile,the computer simulation is performed for validation.The method is... |
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| Keywords: | DFT LMS algorithm sliding window |
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