| 一种基于训练序列的OFDM联合时频同步算法 |
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| 引用本文： | 刘萌萌,许成谦.一种基于训练序列的OFDM联合时频同步算法[J].燕山大学学报,2011,35(3):257-261. |
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| 作者姓名： | 刘萌萌 许成谦 |
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| 作者单位： | 燕山大学信息科学与工程学院,河北秦皇岛,066004 |
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| 摘 要： | 针对正交频分复用OFDM系统对时间同步和频率同步的敏感性,设计出一种新的训练序列,基于这种新的训练序列给出了联合时频同步算法。通过仿真对本文算法和Schmidl定时算法的均值和方差进行了比较,理论分析和仿真结果表明,本文算法消除了Schmidl算法的定时平台现象,具有更好的同步精度,整数频偏估计在时域进行,降低了运算量。
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| 关 键 词： | 正交频分复用 定时同步 频率同步 |
A joint timing and frequency synchronization algorithm for OFDM systems based on training sequence |
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| LIU Meng-meng,XU Cheng-qian.A joint timing and frequency synchronization algorithm for OFDM systems based on training sequence[J].Journal of Yanshan University,2011,35(3):257-261. |
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| Authors: | LIU Meng-meng XU Cheng-qian |
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| Institution: | LIU Meng-meng,XU Cheng-qian(College of Information Science and Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China) |
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| Abstract: | To overcome the serious influence of synchronization offset on OFDM systems,a joint timing and frequency synchron-ization algorithm for OFDM based on a new structure of training sequence is proposed.The performance of the proposed scheme is presented in terms of mean and mean-square error(MSE) obtained by simulations.The theoretical analysis and simulation results show that the proposed scheme eliminates the ambiguity which occurs in Schmidl algorithm,so it has better synchronization precision.Furthermore,t... |
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| Keywords: | orthogonal frequency division multiplexing(OFDM) timing synchronization frequency syncronization |
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