| 非协作通信中CPM信号盲解调器设计与仿真 |
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| 引用本文： | 周家喜,徐佩霞,戴旭初.非协作通信中CPM信号盲解调器设计与仿真[J].小型微型计算机系统,2010,31(6). |
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| 作者姓名： | 周家喜 徐佩霞 戴旭初 |
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| 作者单位： | 中国科学技术大学,电子工程与信息科学系,安徽,合肥,230027 |
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| 基金项目： | 国家"九七三"重点基础研究发展计划项目 |
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| 摘 要： | 提出一种非协作通信中CPM信号盲解调器结构.首先,通过对预处理后CPM信号的循环平稳性分析,得到CPM信号调制阶数和循环谱之间的关系,实现了调制阶数的盲识别;然后,在此基础上利用CPM信号的相关性,实现了频率成形脉冲的盲估计;最终采用复合网格解调算法完成了CPM信号的盲解调.解调器采用前馈结构,易于硬件实现,并且解调性能良好.
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| 关 键 词： | 连续相位调制 盲解调器 盲估计 盲识别 |
Blind Demodulator Design and Simulation of CPM-signal in Non-cooperative Communication |
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| ZHOU Jia-xi,XU Pei-xia,DAI Xu-chu.Blind Demodulator Design and Simulation of CPM-signal in Non-cooperative Communication[J].Mini-micro Systems,2010,31(6). |
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| Authors: | ZHOU Jia-xi XU Pei-xia DAI Xu-chu |
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| Affiliation: | ZHOU Jia-xi,XU Pei-xia,DAI Xu-chu(Department of Electronic Engineering , Information Science,University of Science , Technology of China,Hefei230027,China) |
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| Abstract: | A blind demodulator structure of CPM-signal in non-cooperative communication system is proposed.First,the cyclic property of CPM-signal after pretreatment is analyzed and the blind identification of modulation order of CPM-signal is actualized by analyzing the relationship between the modulation order and cyclic-spectrum density.Second,the frequency shaping pulse is estimated blindly using the auto-correlation of CPM-signal.Last,the blind demodulator is actualized using the composite trellis demodulation al... |
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| Keywords: | continuous phase modulation(CPM) blind demodulator blind estimation blind identification |
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