| 基于时频分布的欠定混叠盲分离 |
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| 引用本文： | 陆凤波,黄知涛,彭耿,姜文利.基于时频分布的欠定混叠盲分离[J].电子学报,2011,39(9):2067-2072. |
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| 作者姓名： | 陆凤波 黄知涛 彭耿 姜文利 |
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| 作者单位： | 1. 国防科技大学电子科学与工程学院,湖南长沙,410073
2. 海军装备研究院,北京,102249 |
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| 基金项目： | 新世纪优秀人才支持计划 |
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| 摘 要： | 针对欠定混合信号的盲分离问题,提出了基于时频分布的欠定盲分离算法,首先计算信号的时频分布矩阵并找出信号的自源时频点,然后把自源点对应的时频分布矩阵表示成三阶张量并通过张量分解估计出混合矩阵,最后通过计算矩阵的伪逆和时频合成来完成源信号的恢复.该算法不需要假设源信号是稀疏的或相互独立的.仿真结果表明与已有算法相比本文方法...
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| 关 键 词： | 欠定盲分离 时频分布 张量正则分解 时频综合 |
| 收稿时间： | 2010-10-20 |
Underdetermined Blind Source Separation(BSS):A Time-Frequency Approach |
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| LU Feng-bo,HUANG Zhi-tao,PENG Geng,JIANG Wen-li.Underdetermined Blind Source Separation(BSS):A Time-Frequency Approach[J].Acta Electronica Sinica,2011,39(9):2067-2072. |
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| Authors: | LU Feng-bo HUANG Zhi-tao PENG Geng JIANG Wen-li |
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| Affiliation: | LU Feng-bo1,HUANG Zhi-tao1,PENG Geng2,JIANG Wen-li1(1.School of Electronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China,2.Naval Academy of Armament,Beijing 102249,China) |
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| Abstract: | Underdetermined blind source separation(BSS) is discussed.Based on time-frequency analysis,an underdetermined BSS method is developed,in which sources are not necessarily sparse or independent mutually.First,we compute a sequence of matrices of time-frequency distributions(TFDs) and obtain the auto-source TF points,then we fold the TFD matrices into a third-order tensor and calculate the mixing matrix by tensor canonical decomposition,finally we obtain the sources by calculating the pseudo-inverse matrix an... |
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| Keywords: | underdetermined blind sources separation time-frequency distributions tensor canonical decomposition time-frequency synthesis |
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