| 基于MIMO-OFDM系统的时频同步分析 |
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| 引用本文： | 李建国,李达飞,韩方景.基于MIMO-OFDM系统的时频同步分析[J].电子工程师,2010,36(6):26-29. |
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| 作者姓名： | 李建国 李达飞 韩方景 |
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| 作者单位： | 1. 国防科学技术大学电子科学与工程学院,湖南省长沙市,410073
2. 北京航天飞行控制中心,北京,100094 |
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| 摘 要： | MIMO-OFDM（多输入多输出-正交频分复用）作为第四代移动通信标准中最有力的竞争者,其优势十分突出。MIMO-OFDM系统既结合了两个系统的优点,又克服了OFDM在多径衰落问题上和MIMO在频率选择性问题上的不足。系统利用了时间、频率和空间的三种分集技术,使无线系统对噪声、干扰、多径的容限大大增加,在提高无线链路的有效性和可靠性方面具有巨大潜力。本文介绍了MIMO-OFDM系统的模型,并分析了系统时频同步的原理及各种常用算法,最后对系统的同步做了仿真并分析其结果,提出了算法的改进意见。
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| 关 键 词： | MIMO OFDM 定时同步 频率同步 |
Time and Frequency Analysis of Synchronization Based on MIMO-OFDM System |
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| LI Jianguo,LI Dafei,HAN Fangjing.Time and Frequency Analysis of Synchronization Based on MIMO-OFDM System[J].Electronic Engineer,2010,36(6):26-29. |
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| Authors: | LI Jianguo LI Dafei HAN Fangjing |
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| Affiliation: | LI Jianguo1,LI Dafei2,HAN Fangjing1(1. School of Electronic Science and Engineering,National Defense Science and Technology University,Changsha 410073,China,2. Beijing Aerospace Control Center,Beijing 100094,China) |
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| Abstract: | MIMO-OFDM,as the most powerful competitor in the fourth generation mobile communication standards,has obvious advantages. MIMO-OFDM system not only incorporates the merits of MIMO and OFDM,but also overcomes the problems of multi-path fading in OFDM and frequency selectivity in MIMO. The system uses time,frequency and space diversity technology,substantially improving the tolerance of wireless system against noise,interference and multi-path fading,having great potential of improving the efficiency and reli... |
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| Keywords: | MIMO OFDM |
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