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一种基于小波的数字调制信号识别算法 被引量：4

A wavelet-based identification algorithm of digital modulation signals
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摘要 小波包变换理论上可以实现信号频带的均匀划分,从而更好地提取信号的时频特征.作者首先介绍了卷积型小波包算法,然后分析了三种主要的数字调制信号的小波变换特征,提出了一种基于小波的数字调制信号识别算法,仿真结果表明该算法能够识别典型的数字调制信号,而且具有较好的抗噪声性能. Wavelet packet transform can decompose the spectrum of signals into uniform sub-bands, thus it can extract the signal＇s time-frequency characteristics clearly. In this paper, convolution wavelet-packet algorithm is first introduced, then wavelet transform features of three main digital modulation signals are analyzed. Finally, a identification algorithm of digital modulation signals is put forward. Simulation results show that this algorithm is reasonable and has good noise performance.
作者 高建勤 熊淑华 赵婧
机构地区 四川大学电子信息学院
出处 《四川大学学报（自然科学版）》 CAS CSCD 北大核心 2007年第6期1281-1284,共4页 Journal of Sichuan University(Natural Science Edition)
关键词 小波包 数字信号 调制识别 wavelet packet transform, digital signal, modulation identification
分类号 TN919 [电子电信—通信与信息系统]
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参考文献7

二级参考文献16

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共引文献35

同被引文献35

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引证文献4

二级引证文献11

四川大学学报（自然科学版）
2007年 第6期

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