| OFDM系统的一种精确的符号定时估计——纪念汪德昭院士诞辰100周年 |
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| 引用本文： | 孙海信,顾亚平,张俊,刘德华,李春红.OFDM系统的一种精确的符号定时估计——纪念汪德昭院士诞辰100周年[J].声学技术,2006,25(1):6-9. |
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| 作者姓名： | 孙海信 顾亚平 张俊 刘德华 李春红 |
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| 作者单位： | 中国科学院声学研究所东海研究站,上海,200032 |
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| 摘 要： | 作为一种高效的数据传输技术,正交频分复用(OFDM)技术具有良好的抗衰落能力,实现数据的高速传输。但是OFDM对同步误差特别是符号同步误差十分敏感。本文提出了一种低复杂度的符号定时估计,利用一个训练帧来实现同步。文中分析了该算法的性能,并在噪声信道中进行了性能分析,给出的仿真结果表明,该算法具有较高的精度和较低的计算复杂度。
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| 关 键 词： | OFDM 符号定时估计 衰落信道 |
| 文章编号： | 1000-3630（2006）-01-0006-04 |
| 收稿时间： | 2005-05-25 |
| 修稿时间： | 2005-08-22 |
Accurate estimation of OFDM symbol timing -In memory of the late Academician Professor Wang Dezhao, 1905-1998 |
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| SUN Hai-xin,GU Ya-ping,ZHANG Jun,LIU De-hua and LI Chun-hong.Accurate estimation of OFDM symbol timing -In memory of the late Academician Professor Wang Dezhao, 1905-1998[J].Technical Acoustics,2006,25(1):6-9. |
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| Authors: | SUN Hai-xin GU Ya-ping ZHANG Jun LIU De-hua and LI Chun-hong |
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| Affiliation: | Shanghai Acoustics Laboratory, Chinese Academy of Sciences, Shanghai 200032, China |
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| Abstract: | As an efficient data transmission technique,OFDM can resist multi-path fading and realize high data rate transmission.However it is particularly sensitive to synchronization errors,especially errors in symbol synchronization.In this paper,a novel symbol timing estimation algorithm is presented which realizes symbol synchronization by using a symbol.Performance of the approach is analyzed,and simulation results presented.The results show that the method has high precision and lower computation complexity. |
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| Keywords: | OFDM symbol timing estimation fading channel |
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