| 基于高阶循环累积量的SQAM信号调制识别算法 |
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| 引用本文： | 冯祥, 李建东. 基于高阶循环累积量的SQAM信号调制识别算法[J]. 电子与信息学报, 2007, 29(1): 125-128. doi: 10.3724/SP.J.1146.2005.00602 |
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| 作者姓名： | 冯祥 李建东 |
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| 作者单位： | 西安电子科技大学ISN国家重点实验室,西安,710071;西安电子科技大学ISN国家重点实验室,西安,710071 |
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| 基金项目： | 国家自然科学基金 , 微软亚洲研究院基金 , 国家自然科学基金 , 高等学校优秀青年教师教学科研奖励计划 , 教育部科学技术研究重点项目 , 国家高技术研究发展计划(863计划) |
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| 摘 要： | 该文利用通信信号的循环平稳特性，在循环累积量域内构造信号分类特征，提出了一种基于高阶循环累积量的调制识别算法，实现对SQAM信号分类。算法对载波频率偏差、时延和相位旋转具有稳健性，并可在多信号环境且存在载波频偏的情况下实现对感兴趣信号的识别。理论分析和仿真结果均证明了算法的正确性和有效性。
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| 关 键 词： | 调制识别 高阶循环累积量 循环平稳性 SQAM |
| 文章编号： | 1009-5896（2007）01-0125-04 |
| 收稿时间： | 2005-05-30 |
| 修稿时间： | 2005-10-15 |
Robust Modulation Classification Algorithm Based on Higher-Order Cyclic Cumulants for SQAM Signals with Frequency Offset |
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| Feng Xiang, Li Jian-dong . Robust Modulation Classification Algorithm Based on Higher-Order Cyclic Cumulants for SQAM Signals with Frequency Offset[J]. Journal of Electronics & Information Technology, 2007, 29(1): 125-128. doi: 10.3724/SP.J.1146.2005.00602 |
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| Authors: | Feng Xiang Li Jian-dong |
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| Affiliation: | State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, China |
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| Abstract: | An algorithm based on higher-order cyclic eumulants for the automatic classification of SQAM signals is proposed. The algorithm utilizes the cyclostationary property of communication signals and presents classification feature in cyclic cumulants domain. It is robust to the presence of carrier frequency offsets, time delay and phase offsets. Interesting signals can also be classified under the presence of interference signals and carrier frequency offsets. The efficiency of the proposed classification algorithm is verified via theoretical analysis and extensive simulations. |
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| Keywords: | Modulation classification Higher-order cyclic cumulants Cyclostationary SQAM |
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