| 基于星座图匹配的OFDM子信道调制识别改进算法 |
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| 引用本文： | 谢红. 基于星座图匹配的OFDM子信道调制识别改进算法[J]. 计算机与网络, 2012, 0(7): 65-68 |
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| 作者姓名： | 谢红 |
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| 作者单位： | 中国电子科技集团公司第五十四研究所,河北石家庄050081 |
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| 摘 要： | 文章针对OFDM信号侦察系统中已有的子信道调制识别方法难以满足实时性要求的问题,提出了一种基于星座图匹配的子信道调制识别改进算法,该方法采用标准信号星座图的幅度和相位分布构建识别函数,消除了抽取聚类法的调制阶数估计误差,提高了识别的正确率。通过理论分析和仿真试验,验证了该改进方法的有效性和可行性。
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| 关 键 词： | OFDM调制方式盲识别 盲聚类 模板匹配 |
A Modified Algorithm of Modulation Recognition of Each Subchannel Based on Constellation |
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| XIE Hong. A Modified Algorithm of Modulation Recognition of Each Subchannel Based on Constellation[J]. China Computer & Network, 2012, 0(7): 65-68 |
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| Authors: | XIE Hong |
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| Affiliation: | XIE Hong (The 54th Research Institute of CETC, Shijiazhuang Hebei 050081, China) |
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| Abstract: | For OFDM signal reconnaissance system, the existing sub-channel modulation recognition method an hardly fidfill the realtime requirement. And a consteUation-based modified algorithm of sub-channel modulation recognition has been put forward. This algorithm has employed the amplitude and phase distribution of standard signal constellation diagram to construct recognition function. It has eliminated the estimation error on modulation exponent-number by extraction clustering method. And it has improvedthe recognition accuracy. Theoretical analysis and simulation has verified the effect and feasibility of the modified method. |
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| Keywords: | OFDM Blind recognition of modulation Blind clustering Template matching |
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