| OFDM系统中高性能帧同步算法 |
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| 引用本文： | 刘晓明,张中山,刘元安. OFDM系统中高性能帧同步算法[J]. 北京邮电大学学报, 2005, 28(1): 99-102 |
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| 作者姓名： | 刘晓明 张中山 刘元安 |
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| 作者单位： | 北京邮电大学,电信工程学院,北京,100876;北京邮电大学,电信工程学院,北京,100876;北京邮电大学,电信工程学院,北京,100876 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 提出了正交频分复用(OFDM)系统中一种新的帧同步算法。该算法采用一种具有中心对称结构的训练序列。借助于该训练序列,新算法在信噪比为10 dB且误报概率为10-3的环境下具有10-3的训练序列漏检概率。在实现时间同步的同时,载波频偏也可以被纠正到0.5倍的子载波间隔范围内。
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| 关 键 词： | 帧同步 频偏估计 正交频分复用 |
| 文章编号： | 1007-5321(2005)01-0099-04 |
| 修稿时间： | 2003-08-28 |
High Performance Frame Synchronization in OFDM Systems |
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| LIU Xiao-ming,ZHANG Zhong-shan,LIU Yuan-an. High Performance Frame Synchronization in OFDM Systems[J]. Journal of Beijing University of Posts and Telecommunications, 2005, 28(1): 99-102 |
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| Authors: | LIU Xiao-ming ZHANG Zhong-shan LIU Yuan-an |
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| Affiliation: | School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | A new frame synchronization scheme in orthogonal frequency-division multiplexing (OFDM) system was proposed. Based on a central-symmetric training sequence, the miss detection probability of a training sequence in the proposed algorithm could be as small as 10~(-3) when signal noise rate is 10 dB and the false alarm probability is assumed to be 10~(-3). Carrier frequency offset could also be partially corrected within sub-carrier spacing of 0.5 as soon as frame synchronization is performed. |
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| Keywords: | frame synchronization frequency offset estimation orthogonal frequency-division multiplexing |
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