| 自适应信号处理中稳健估计的变步长仿射投影 |
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| 引用本文： | 贾冲,郭明喜,张雄伟.自适应信号处理中稳健估计的变步长仿射投影[J].应用科学学报,2007,25(4):428-432. |
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| 作者姓名： | 贾冲 郭明喜 张雄伟 |
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| 作者单位： | 解放军理工大学 通信工程学院，江苏 南京 210007 |
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| 摘 要： | 本文研究自适应仿射投影中的最优步长准则，提出一种新的指数型步长控制方法。针对APA类算法抗粗差能力差的缺点，通过三权法等效误差函数，将稳健M估计引入APA类算法，提出了稳健M估计变步长自适应仿射投影方法。理论分析和数值计算结果表明，MVAPA算法稳态失调小，抗粗差能力高于近来提出的仿射投影算法。
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| 关 键 词： | 自适应滤波器 变步长仿射投影算法 稳健估计 M估计 |
| 文章编号： | 0255-8297（2007）04-0428-05 |
| 收稿时间： | 2006-11-01 |
| 修稿时间： | 2006-11-012007-04-24 |
Variable Step-Size Affine Projection with Robust Estimators for Adaptive Signal Processing |
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| JIA Chong,GUO Ming-xi,ZHANG Xiong-wei.Variable Step-Size Affine Projection with Robust Estimators for Adaptive Signal Processing[J].Journal of Applied Sciences,2007,25(4):428-432. |
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| Authors: | JIA Chong GUO Ming-xi ZHANG Xiong-wei |
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| Institution: | Institute of Communications Engineering, PLA University of Science and Technology, Nanjing 210007 China |
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| Abstract: | We propose a variable step-size affine projection algorithm(APA) with robustM estimators.The step-size is controlled with an exponential function,based on a criterion of optimal variable step-size performance.The robust-M estimators are applied to the variable step-size APA algorithm using the equivalent error with tri-weights.Theoretical analyses and numerical results show that the proposed algorithm performs well with a low misadjustment error rate and is robust against outliers. |
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| Keywords: | adaptive filter variable step-size affine projection algorithm robust estimation M-estimators |
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