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基于HOCCs和SVM的单通道时频重叠信号调制识别 被引量：4

Modulation Recognition Based on HOCCs and SVM for Co-Channel Time-Frequency Overlapped Signal
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摘要 针对单通道QPSK-16QAM时频重叠双信号,提出了一种利用接收信号二、四、六阶循环累积量(HOCCs)构建分类特征的调制识别方法。选用支持向量机(SVM)作为系统的分类器,与已有方法相比,该算法识别性能更趋稳健。当数据长度取得100个待识别信号码元时,可以在较低信噪比下实现对备选信号准确的识别。仿真试验证实了算法的有效性。 To solve the problems in modulation recognition for time-frequency overlapped two-signal combining QPSK with 16QAM in a single channel, a novel algorithm is proposed that adopts the combination of 2nd,4th, 6th cyclic cumulants and establishes some robust classification features. Designing a SVM classifier can map the 2-D features to higher dimension super-space. Compared with other methods, it has more robust performance. When the input data is sufficient, the algorithm can classify the above two-signal properly in low SNR. It is verified that the proposed algorithm is reasonable and efficient with experiment results
作者 付海涛 石荣 万群 朱波
机构地区 信息综合控制国家重点实验室 电子科技大学电子工程学院
出处 《电子信息对抗技术》 2009年第6期14-18,共5页 Electronic Information Warfare Technology
关键词 调制识别 支持向量机 时频重叠 循环累积量 modulation recognition SVM time-frequency overlapped HOCCs
分类号 TN971.1 [电子电信—信号与信息处理]
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参考文献11

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二级参考文献21

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共引文献33

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二级引证文献29

电子信息对抗技术
2009年 第6期

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