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J4  2014, Vol. 48 Issue (1): 136-140    DOI: 10.3785/j.issn.1008-973X.2014.01.021
电气工程     
解相关仿射投影算法及应用
文昊翔1,2,陈隆道1,蔡忠法1
1.浙江大学 电气工程学院,浙江 杭州 310027;2.韶关学院 物理与机电工程学院,广东 韶关 512205
Decorrelation affine projection algorithm and its application
WEN Hao-xiang1,2, CHEN Long-dao1, CAI Zhong-fa1
1.College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;2.School of Physics and
Mechanical and Electrical Engineering, Shaoguan University, Shaoguan 512205,China
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摘要:

为了提高自适应算法工作于强相关信号输入时的收敛速度,提出解相关仿射投影算法(DAPA). DAPA对输入信号矩阵进行预处理以解除不同时刻输入信号的相关性;利用输入矩阵的正交分量更新滤波器系数,对收敛步长进行优化以使后验误差最小化. 将DAPA应用于回声消除系统,用有色噪声及真实语音信号进行仿真. 结果表明,DAPA收敛速度快,计算复杂度适中. 

Abstract:

A decorrelation affine projection algorithm (DAPA) was proposed to increase the convergence rate when the input signal is highly correlated. The input signal matrix was preprocessed to eliminate its correlation at different time instant. Then the orthogonal component of the input matrix was used to update the coefficients of the adaptive filter. The step-size was optimized to minimize the posteriori error. The DAPA was used in echo cancellation system for simulation with colored noise and real speech sequence. Experimental results indicate that fast convergence rate is achieved and computational complexity is moderate.

出版日期: 2014-01-01
:  TM 714  
通讯作者: 陈隆道,男,教授,博导.     E-mail: clongdao@soho.com
作者简介: 文昊翔(1984-),男,博士生,从事自适应滤波理论、回声消除、有源消声等的研究.E-mail: xiangxiang_0@163.com
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引用本文:

文昊翔,陈隆道,蔡忠法. 解相关仿射投影算法及应用[J]. J4, 2014, 48(1): 136-140.

WEN Hao-xiang, CHEN Long-dao, CAI Zhong-fa. Decorrelation affine projection algorithm and its application. J4, 2014, 48(1): 136-140.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2014.01.021        http://www.zjujournals.com/eng/CN/Y2014/V48/I1/136

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