| 一种基于离散小波变换的自适应滤波新算法 |
| |
| 引用本文： | 冯存前,张永顺,童宁宁.一种基于离散小波变换的自适应滤波新算法[J].空军工程大学学报,2004,5(5):51-54. |
| |
| 作者姓名： | 冯存前 张永顺 童宁宁 |
| |
| 作者单位： | 空军工程大学导弹学院，空军工程大学导弹学院，空军工程大学导弹学院 陕西三原 713800，陕西三原 713800，陕西三原 713800 |
| |
| 摘 要： | 将小波变换、变换域自适应算法和变步长自适应算法相结合，得出了一种基于离散小波变换的自适应滤波新算法(NDWT-LMS)，该算法可以有效地降低输入信号的自相关程度，克服固定步长因子所导致算法在快的收敛速度和较低的稳态误差之间存在的矛盾。计算机仿真结果表明该算法与LMS算法相比具有更快的收敛速度和更小的失调噪声，可以很好地应用于自适应系统中。
|
| 关 键 词： | 自适应滤波 小波变换 LMS算法 变换域自适应算法 变步长自适应算法 |
| 文章编号： | 1009-3516(2004)05-0050-04 |
| 修稿时间： | 2004年1月4日 |
A New Adaptive Filtering Algorithm Based on Discrete Wavelet Transforms |
| |
| FENG Cun-qian,ZHANG Yong-shun,TONG Ning-ning.A New Adaptive Filtering Algorithm Based on Discrete Wavelet Transforms[J].Journal of Air Force Engineering University(Natural Science Edition),2004,5(5):51-54. |
| |
| Authors: | FENG Cun-qian ZHANG Yong-shun TONG Ning-ning |
| |
| Institution: | The Missile Institute, Air Force Engineering University, Sanyuan, Shaanxi 713800, China |
| |
| Abstract: | The wavelet transforms are integrated with transform domain LMS algorithm and variable step - size LMS algorithm, from which a new adaptive filtering algorithm is presented based on discrete wavelet transforms ( NDWT - LMS). The algorithm can reduce the cross - correlation of input signals effectively and can overcome the conflict between high convergence rate and low steady - state maladjustment in LMS algorithm which is caused by the fixed step - size factors. The computer simulation results indicate that the higher convergence rate and lower maladjustment noise are obtained by using this algorithm in comparison with LMS algorithm, and the new algorithm is effectively applicable to the adaptive systems. |
| |
| Keywords: | adaptive filtering transform domain adaptive algorithm variable step-size adaptive algorithm |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《空军工程大学学报》浏览原始摘要信息 |
| 点击此处可从《空军工程大学学报》下载免费的PDF全文 |
