| 基于特殊导频码的OFDM系统高效同步算法 |
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| 引用本文： | 汪涛,张剑,刘洛琨,李鸥.基于特殊导频码的OFDM系统高效同步算法[J].微波学报,2011,27(1):87-90. |
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| 作者姓名： | 汪涛 张剑 刘洛琨 李鸥 |
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| 作者单位： | 解放军信息工程大学信息工程学院,郑州,450002 |
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| 基金项目： | “863”重点项目(2009AA011205); 国家自然科学基金(60472064) |
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| 摘 要： | 设计了一类适用于OFDM系统具有良好理想相关性的前导码结构。基于此前导码,提出了一种适用于OFDM系统的基于匹配滤波结构的高效帧定时同步捕获方法,该算法具有非常高的效率并且能够准确估计出定时同步位置。计算机仿真结果表明该捕获方法在低信噪比下具有较高捕获同步概率,而且同步精度很高。
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| 关 键 词： | 正交频分复用(OFDM) 前导码 帧定时同步 匹配滤波 |
New Synchronization Algorithm for OFDM Systems Based on Special Pilot Code |
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| WANG Tao,ZHANG Jian,LIU Luo-kun,LI Ou.New Synchronization Algorithm for OFDM Systems Based on Special Pilot Code[J].Journal of Microwaves,2011,27(1):87-90. |
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| Authors: | WANG Tao ZHANG Jian LIU Luo-kun LI Ou |
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| Affiliation: | WANG Tao,ZHANG Jian,LIU Luo-kun,LI Ou(PLA Information Engineering University,Zhengzhou 450002,China) |
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| Abstract: | A design method of a special class of preamble codes for OFDM systems with perfect auto-correlation performance is given in this paper.And then,based on these special preamble codes,a new frame synchronization algorithm used matched filter structure for OFDM systems was proposed.The proposed algorithm has very high efficient and can afford accurate frame synchronization time point.The computer simulation results show that the synchronization probability of the proposed algorithm is very high at low SNR. |
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| Keywords: | OFDM pilot codes frame synchronization matched filter |
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