| 基于小波变换的信号调制方式的识别研究 |
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| 引用本文： | 赵成林,罗勇,石明军.基于小波变换的信号调制方式的识别研究[J].无线电工程,2010,40(1):10-12. |
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| 作者姓名： | 赵成林 罗勇 石明军 |
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| 作者单位： | 1. 北京邮电大学,无线网络实验室,北京,100876
2. 清华大学,北京,100081 |
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| 摘 要： | 根据小波理论,利用小波变换的尺度分解和局部放大的能力,对调制信号进行小波变换和分解,挖掘调制信号在间断点的瞬态特性,成功建立了不同调制方式和其调制特征间的对应关系。在不需要同步和符号速率等先验知识的情况下,实现了对MASK、MFSK、MPSK、MQAM等数字调制方式的完全识别。通过理论分析和计算机仿真验证了所提方法的有效性和实用性,具有很高的应用价值。
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| 关 键 词： | 小波变换 数字调制信号 类间识别 类内识别 |
Wavelet-based Identification of Digital Modulation Signals |
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| ZHAO Cheng-lin,LUO Yong,SHI Ming-jun.Wavelet-based Identification of Digital Modulation Signals[J].Radio Engineering of China,2010,40(1):10-12. |
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| Authors: | ZHAO Cheng-lin LUO Yong SHI Ming-jun |
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| Affiliation: | ZHAO Cheng-lin1,LUO Yong1,SHI Ming-jun2 (1.Wireless Lab of BUPT,Beijing 100876,China,2.Tsinghua University,Beijing 100081,China) |
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| Abstract: | The wavelet transform is used for detecting transient signals and extracting time-frequency characters in digital modulation signals.The approach is based on the ability of multiscale analysis of wavelet transform.We propose a suitable method for distinguishing MASK signal,MFSK signal,MPSK signal and MQAM signal without any pre-knowledge.The simulation results show that the method is reasonable and can perform well. |
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| Keywords: | wavelet transform digital modulation signals intra-class identification inter-class identification |
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