| 一种基于导频设计的MIMO-OFDM载波频偏估计方法 |
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| 引用本文： | 谢玉堂,姚瑶. 一种基于导频设计的MIMO-OFDM载波频偏估计方法[J]. 电子学报, 2006, 34(1): 110-113 |
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| 作者姓名： | 谢玉堂 姚瑶 |
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| 作者单位： | 中国科学技术大学,安徽合肥,230027;中兴通讯上海研发中心,上海,201203;中兴通讯上海研发中心,上海,201203 |
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| 摘 要： | 在多输入多输出-正交频分复用(MIMO-OFDM)系统中载频同步是个关键问题.考虑在该类系统中,存在着多个不同的载波频偏这个具有普遍适应性的模型,为了估计多个不同的频偏,提出了一种导频设计方案－子波段方法,将多个频偏的估计问题转换为一组单个频偏估计问题,从而降低了复杂度,同时可以有效地抑制载波间干扰和天线间干扰,提高载波频偏估计性能.
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| 关 键 词： | 多输入多输出-正交频分复用 频偏估计 子波段方法 |
| 文章编号： | 0372-2112（2006）01-0110-04 |
| 收稿时间： | 2005-03-01 |
| 修稿时间： | 2005-03-012005-06-25 |
Carrier Frequency Offset Estimation in MIMO-OFDM Systems Based on Pilots Design |
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| XIE Yu-tang,YAO Yao. Carrier Frequency Offset Estimation in MIMO-OFDM Systems Based on Pilots Design[J]. Acta Electronica Sinica, 2006, 34(1): 110-113 |
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| Authors: | XIE Yu-tang YAO Yao |
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| Affiliation: | 1. University of Science and Technology of China,Hefei,Anhui 230027,China;2. Shanghai R&D Center,ZTE Corporation,Shanghai 201203,China |
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| Abstract: | The problems of carrier synchronization in MIMO-OFDM communications system are investigated in the paper.Based on a general model where multiple frequency offsets exist between transmit and receive antennas,a special pilot allocation scheme-sub-band method for the estimation of multiple different frequency offsets is proposed to convert the problem of multiple frequency offsets estimation into a set of single frequency offset estimation problems,which can reduce the complexity.Meanwhile this method is effective in suppressing the inter-carrier interference (ICI) and multi-antenna interference (MAI) and therefore improves the estimation performance. |
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| Keywords: | MIMO-OFDM frequency offset estimation sub-band method |
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