| 含噪混合盲扰信分离中联合降噪技术研究 |
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| 引用本文： | 段玉玲,张杭,张江. 含噪混合盲扰信分离中联合降噪技术研究[J]. 军事通信技术, 2011, 0(2) |
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| 作者姓名： | 段玉玲 张杭 张江 |
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| 作者单位： | 解放军理工大学通信工程学院研究生1队;解放军理工大学通信工程学院卫星通信系;解放军理工大学通信工程学院研究生2队; |
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| 摘 要： | 针对盲扰信分离技术在含噪混合条件下分离效果差的问题,文章采用经验模态分解和小波变换联合的降噪技术进行分离前的消噪预处理,研究了联合降噪的三种模式,分别对其降噪效果进行了仿真分析,得到了一种较好的联合降噪模式。将该模式与无噪环境下的盲分离算法相结合,弥补了经典盲源分离算法处理含噪混合盲扰信分离的不足。仿真结果表明该算法在一定范围的低信噪比条件下,能够从含噪的混合信号中恢复出通信信号源。
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| 关 键 词： | 经验模态分解 小波变换 联合降噪 盲源分离 |
Research on Joint Denoising Technology in Blind Interference-signal Separation for Noisy Mixtures |
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| DUAN Yu-ling,ZHANG Hang,ZHANG Jiang. Research on Joint Denoising Technology in Blind Interference-signal Separation for Noisy Mixtures[J]. Journal of Military Communications Technology, 2011, 0(2) |
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| Authors: | DUAN Yu-ling ZHANG Hang ZHANG Jiang |
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| Affiliation: | DUAN Yu-ling1,ZHANG Hang2,ZHANG Jiang3(1.Postgraduate Team 1 ICE,PLAUST,Nanjing 210007,China,2.Department of Satellite Communication ICE,3.Postgraduate Team 2 ICE,PLAUST) |
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| Abstract: | The Blind Interference-Signal Separation(BISS) for noisy mixtures is known as a difficult problem.In this paper,Empirical Mode Decomposition (EMD) and wavelet transform are combined to do noise-pretreatment before separation.This paper studies three joint denoising modes,analyses their performances and brings an effective mode of joint denoising.This joint denoising mode combined with the BSS algorithm for non-noise solves the BISS for noisy mixtures.Simulation results show that,in a certain range of low SN... |
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| Keywords: | empirical mode decomposition wavelet transform joint denoising blind source separation |
| 本文献已被 CNKI 等数据库收录！ |
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