| 脉冲噪声下基于自适应特征值分解的时延估计新方法 |
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| 引用本文： | 刘文红,邱天爽,唐洪.脉冲噪声下基于自适应特征值分解的时延估计新方法[J].大连理工大学学报,2006,46(6):905-909. |
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| 作者姓名： | 刘文红 邱天爽 唐洪 |
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| 作者单位： | 大连理工大学,电子与信息工程学院,辽宁,大连,116024;海南师范大学,物理系,海南,海口,571158;大连理工大学,电子与信息工程学院,辽宁,大连,116024 |
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| 基金项目： | 国家自然科学基金;辽宁省科技计划;国家重点实验室基金;海南省自然科学基金;海南省教育厅高等学校科学研究基金 |
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| 摘 要： | 依据分数低阶统计量理论和噪声特征，提出一种鲁棒性自适应特征值分解（RAED）时延估计方法，扩展了自适应特征值分解（AED）时延估方法的使用环境．该算法在脉冲噪声环境下，组合两个接收信号，使其共变矩阵最小特征值对应的特征向量为信道的估计，并基于广义归一化最小平均p范数（广义NLMP）方法自适应得到该特征向量，从而获得时延估计．计算机仿真表明该方法在脉冲噪声环境下具有较好的鲁棒性．
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| 关 键 词： | 时延估计 α稳定分布 分数低阶矩 共变矩阵 特征值分解 广义归一化最小平均p范数 |
| 文章编号： | 1000-8608（2006）06-0905-05 |
| 收稿时间： | 2005-05-25 |
| 修稿时间： | 2005-05-252006-10-08 |
A new TDE method based on adaptive eigenvalue decomposition in presence of impulsive noises |
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| LIU Wen-hong,QIU Tian-shuang,TANG Hong.A new TDE method based on adaptive eigenvalue decomposition in presence of impulsive noises[J].Journal of Dalian University of Technology,2006,46(6):905-909. |
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| Authors: | LIU Wen-hong QIU Tian-shuang TANG Hong |
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| Institution: | 1. School of Electr. and Inf. Eng., Dalian Univ. of Technol., Dalian 116024, China; 2. Dept. of Phys., Hainan Norm. Univ., Haikou 571158, China |
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| Abstract: | Based on the fractional lower order statistics and the noise characteristics,a robust adaptive eigenvalue decomposition(RAED) time delay estimation method is proposed,which extends the eigenvalue decomposition(AED) time delay estimation algorithm.In the presence of impulsive noise,the two received signals are combinated,so the estimated impulse response of the channel is the eigenvector of its covariation matrix corresponding to the smallest eigenvalue,which can be realized adaptively using generalization of the normalized least mean p-norm (generalized NLMP) algorithm.Simulation results indicate that the proposed algorithm provides better performance in the impulsive noise environment than that of AED algorithm. |
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