OFDM传输分集中的频率同步

吕浚哲; 王亚莉; 张海林; 刘增基

OFDM传输分集中的频率同步

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出版历程
- 收稿日期: 2003-07-05
- 修回日期: 2004-02-16
- 刊出日期: 2004-10-19

The Frequency Synchronization of Transmitter Diversity Schemes for OFDM System

摘要

摘要: 近年来结合OFDM的传输分集技术得到了普遍关注。可是OFDM的一个固有缺点是其对频率偏移非常敏感，因此如何对基于OFDM的传输分集系统进行有效的频偏估计和校正是一个值得探讨的问题。为此该文给出了一种基于导频的粗频偏估计方法和盲自适应细频偏估计算法，并通过仿真验证了所给方法的有效性。
- 正交频分复用; 传输分集; 空时码; 频偏校正
Abstract: The OFDM transmitter diversity has gotten more attention in recent years. However, OFDM systems are very sensitive to frequency-offset. Therefore, it is necessary to estimate effectively and to compensate frequency-offset in the systems. This paper presents a blind and adaptive fine frequency-offset estimation method firstly, and then proposes a coarse frequency-offset estimation method based on pilot frequency. Finally, simulation results verify these methods.

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参考文献(1)

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