| 正交频分复用中的符号同步研究 |
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| 引用本文： | 崔新瑞,张捷,于红梅.正交频分复用中的符号同步研究[J].信息安全与通信保密,2008(6):53-55. |
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| 作者姓名： | 崔新瑞 张捷 于红梅 |
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| 作者单位： | 西北工业大学电子信息学院,陕西,西安,710072 |
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| 摘 要： | 同步是正交频分复用系统的关键问题之一,文章主要研究了基于循环前缀的最大似然（ML）同步算法,及基于训练序列的符号定时同步算法,并进行了算法仿真。仿真结果表明,与ML算法相比,该算法大大提高了系统的同步性能,尤其是在多径信道中的性能得到了很大提高。
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| 关 键 词： | 正交频分复用 循环前缀 训练序列 多径信道 |
| 文章编号： | 1009-8054(2008)06-0053-03 |
| 修稿时间： | 2007年11月12 |
Study on the Symbol Synchronization for OFDM Systems |
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| CUI Xin-rui,ZHANG Jie,YU Hong-mei.Study on the Symbol Synchronization for OFDM Systems[J].China Information Security,2008(6):53-55. |
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| Authors: | CUI Xin-rui ZHANG Jie YU Hong-mei |
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| Affiliation: | (School of Electronics and Information, Northwestern Polytechnical University, Xi＇an Shaanxi 710072, China) |
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| Abstract: | Synchronization is a key problem for orthogonal frequency division multiplexing（OFDM） system. First, the ML（maximum likelihood, symbol synchronization algorithm based on cyclic prefix is analyzed. And then the symbol synchronization algorithm based on training frame is presented. Results of simulation and analysis show that, in comparison with ML algorithm it is of better synchronization performance, and its performance is considerably raised especially in multipath channels. |
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| Keywords: | OFDM cyclic prefix training frame multipath channels |
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