| 小波奇异性分析在DS-UWB降噪中的应用 |
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| 引用本文： | 姜波,李迎盼,田日才.小波奇异性分析在DS-UWB降噪中的应用[J].通信技术,2010,43(1):14-16,19. |
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| 作者姓名： | 姜波 李迎盼 田日才 |
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| 作者单位： | 1. 黑龙江省电子信息产品监督检察院,哈尔滨,黑龙江,150090
2. 哈尔滨工业大学通信技术研究所,哈尔滨,黑龙江,150080 |
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| 摘 要： | 直接序列超宽带（DS—UWB）信号的脉冲持续时间极短，信号以极低的功率谱密度分布在很宽的频带上。热噪声成为主要干扰源，传统射频滤波只能去除带外噪声。文中基于DS-UWB信号的奇异性分析，利用小波变换模极大值法进行带内滤波。仿真结果表明，该方法能有效地保留信号的奇异点信息，突显信号的细节特征，降噪效果明显。
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| 关 键 词： | DS—UWB 奇异性分析 小波模极大值法 降噪 |
Application of Wavelet Singularity Analysis in DS-UWB Denoising |
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| JIANG Bo,LI Ying-pan,TIAN Ri-cai.Application of Wavelet Singularity Analysis in DS-UWB Denoising[J].Communications Technology,2010,43(1):14-16,19. |
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| Authors: | JIANG Bo LI Ying-pan TIAN Ri-cai |
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| Affiliation: | JIANG Bo,LI Ying-pan,TIAN Ri-cai(Heilongjian Electronic Information Products Supervision Procuratorate,Harbin Heilongjiang 150090,China,Communication Research Center,Harbin Institute of Technology,Harbin Heilongjiang 150080,China) |
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| Abstract: | The pulse duration of direct-sequence ultra-wideband(DS-UWB) signal is very short,and the signal is distributed over a very wide frequency band with very low power spectral density.Thermal noise becomes the major source of interference,and the traditional RF filter could only remove the out-band noise.Based on DS-UWB signal singularity analysis,this article proposes a denoising method of Wavelet transform modulus maxima in signal band.Simulation results indicate that this method could effectively retain sin... |
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| Keywords: | DS-UWB |
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