| 频域盲源分离的邻频幅角比排序算法 |
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| 引用本文： | 王尔馥,张乃通,孟维晓,蔺兴海. 频域盲源分离的邻频幅角比排序算法[J]. 计算机工程与应用, 2009, 45(23): 134-136. DOI: 10.3778/j.issn.1002-8331.2009.23.037 |
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| 作者姓名： | 王尔馥 张乃通 孟维晓 蔺兴海 |
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| 作者单位： | 1. 哈尔滨工业大学电子与信息技术研究院,哈尔滨,150080
2. 黑龙江移动通信有限公司网络部,哈尔滨,150001 |
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| 摘 要： | 频域盲源分离方法通过STFT变换将时域的线性卷积模型转化为频域的瞬时混合模型，可以利用瞬时混合的成熟算法，然而缺点是存在排列和尺度的不确定性，会使逆STFT变换后的信号发生再次混叠。对分离矩阵内部结构进行研究，提出邻频幅角比的概念，通过纠正图样中发生排列错误频点处的分离矩阵结构，达到正确拟合已分离信号的目的。仿真结果表明，邻频幅角比排序算法可以纠正大多数频点上的排序错误，正确进行盲源分离。
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| 关 键 词： | 频域盲源分离 排列问题 尺度问题 分离矩阵 邻频幅角比 |
| 收稿时间： | 2008-04-11 |
| 修稿时间： | 2009-3-13 |
Novel compositor algorithm based on neighbor frequency breadth-angle ratio in frequency domain BSS |
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| WANG Er-fu,ZHANG Nai-tong,MENG Wei-xiao,LIN Xing-hai. Novel compositor algorithm based on neighbor frequency breadth-angle ratio in frequency domain BSS[J]. Computer Engineering and Applications, 2009, 45(23): 134-136. DOI: 10.3778/j.issn.1002-8331.2009.23.037 |
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| Authors: | WANG Er-fu ZHANG Nai-tong MENG Wei-xiao LIN Xing-hai |
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| Affiliation: | WANG Er-fu1,ZHANG Nai-tong1,MENG Wei-xiao1,LIN Xing-hai21.Communication Research Center,Harbin Institute of Technology,Harbin 150080,China 2.Network Department,China Mobile Group Heilongjiang Company Limited,Harbin 150001,China |
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| Abstract: | The Blind Source Separation(BSS) can turn linearity convolution model in time domain into the instantaneous fixed one in frequency domain by STFT transform.The traditional instantaneous fixed algorithm has indeterminacy in permutation problem and scaling problem,so as to make the signal mixed again after the converse STFT transform.In this paper,based on the study on the structure of separated matrix,a conception of neighbor frequency breadth-angle ratio is proposed,which may contribute in correcting the st... |
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| Keywords: | Blind Source Separation（BSS） in frequency domain permutation problem scaling problem separated matrix neighbor frequency breadth-angle ratio
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