| 基于频偏预校正匹配滤波的同步方法 |
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| 引用本文： | 李新民,王旭亮,扈平. 基于频偏预校正匹配滤波的同步方法[J]. 无线电工程, 2012, 42(2): 52-54,61 |
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| 作者姓名： | 李新民 王旭亮 扈平 |
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| 作者单位： | 1. 中国电子科技集团公司第五十四研究所,河北石家庄,050081
2. 中国人民解放军95972部队,甘肃酒泉,735018 |
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| 摘 要： | 针对突发通信同步,介绍了进行正交下变频和采样数字化后进行匹配滤波的方法,分析了频偏对匹配滤波的影响,提出了频偏预校的方法,进而分析了频偏未校正匹配滤波、频偏预校正匹配滤波和无频偏解调后同步的性能。对低信噪比条件下存在较大频偏时频偏预校正、频偏未校正及无频偏解调后同步3种情况下的同步性能进行了建模仿真分析。
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| 关 键 词： | m序列 突发同步 匹配滤波 频偏预校正 |
A Method of Burst Synchronization Based on Matched Filtering with Frequency-offset Pre-correction |
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| LI Xin-min,WANG Xu-liang,HU Ping. A Method of Burst Synchronization Based on Matched Filtering with Frequency-offset Pre-correction[J]. Radio Engineering of China, 2012, 42(2): 52-54,61 |
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| Authors: | LI Xin-min WANG Xu-liang HU Ping |
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| Affiliation: | 1.The 54th Research Institute of CETC,Shijiazhuang Hebei 050081,China; 2.Unit 95972,PLA,Jiuquan Gansu 735018,China) |
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| Abstract: | Aiming at synchronization of burst communications,this paper firstly introduces a method of matched filtering based on quadrature down-conversion and digital sampling,then analyzes the influence of frequency offset on matched filtering.It proposes a synchronization method based on matched filtering with frequency offset pre-correction,then analyzes the performance of synchronization by matched filtering with and without frequency offset pre-correction and after demodulation without frequency offset.In the end,the modeling simulation and analysis of the synchronization performance of the three cases under the condition of low signal noise ratio. |
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| Keywords: | m-sequence burst synchronization matched filtering frequency offset pre-correction |
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