| 基于小波变换的数字调制信号特征提取 |
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| 引用本文： | 王旭,张达敏,周勇.基于小波变换的数字调制信号特征提取[J].贵州科学,2008,26(4). |
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| 作者姓名： | 王旭 张达敏 周勇 |
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| 作者单位： | 贵州大学电子科学与信息技术学院,贵州,贵阳,550025 |
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| 基金项目： | 贵州省教育厅基金资助项目(2007)321号 |
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| 摘 要： | 小波变换的多分辨率特性对暂态信号有很强的检测能力,数字信号在不同码元之间呈现出幅度、频率和相位瞬变现象.文讨论如何利用小波变换对数字调制信号的瞬变特征进行提取,实验表明该方法对数字调制信号幅度、频率和相位的瞬变特征能够进行有效的检测.
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| 关 键 词： | 小波变换 多分辨率分析 调制信号 特征提取 |
FEATURE EXTRACTION OF DIGITAL MODULATED SIG-NALS BASED ON WAVELET TRANSFORM |
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| WANG Xu,ZHANG Da-min,ZHOU Yong.FEATURE EXTRACTION OF DIGITAL MODULATED SIG-NALS BASED ON WAVELET TRANSFORM[J].Guizhou Science,2008,26(4). |
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| Authors: | WANG Xu ZHANG Da-min ZHOU Yong |
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| Institution: | School of Electronic Science & Information Technology;Guizhou University;Guiyang 550025;China |
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| Abstract: | Wavelet transform with characteristics of multi-resolution is very suitable for detecting transient signals.The paper discusses how to use wavelet transform to extract the transient feature of the digital modulated signals.The result of experiment demonstrates that this method is very useful to detect the amplitude,frequency and phase instantaneous features. |
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| Keywords: | wavelet transform MRA modulated signal feature extraction |
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