| OFDM系统中基于梳状导频的空时信道估计 |
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| 引用本文： | 万琦,李平安. OFDM系统中基于梳状导频的空时信道估计[J]. 武汉理工大学学报(信息与管理工程版), 2006, 28(11): 20-23 |
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| 作者姓名： | 万琦 李平安 |
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| 作者单位： | 武汉理工大学,信息工程学院,湖北,武汉,430070 |
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| 摘 要： | 研究了OFDM系统中基于梳状导频的空时信道估计方法，并提出了一种新的信道估计算法，即实现了空时二维信道估计。基于梳状导频的空时信道估计的算法分为两步：第一步是利用导频信号对导频位置的信道进行估计；第二步是信道插值，得到所有频域位置的信道信息。基于LS准则的信号估计以及基于线性插值的信道插值，笔者进行了详细研究。
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| 关 键 词： | 梳状导频 空时 信道估计 |
| 文章编号： | 1007-144X（2006）11-0020-04 |
| 收稿时间： | 2006-09-15 |
| 修稿时间： | 2006-09-15 |
Space-time Channel Estimation for OFDM Systems Based on Comb-type Pilot Arrangement |
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| Wan Qi,Li Ping'an. Space-time Channel Estimation for OFDM Systems Based on Comb-type Pilot Arrangement[J]. Journal of Wuhan University of Technology(Information & Management Engineering), 2006, 28(11): 20-23 |
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| Authors: | Wan Qi Li Ping'an |
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| Affiliation: | School of Information Engineering, WUT, Wuhan ,430070, China |
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| Abstract: | The channel estimation methods for OFDM systems based on comb - type pilot sub - carrier arrangement are investigated, and a new method for estimating channel transfer function is proposed to estimate the channel transfer function from time and space. The channel estimation algorithm based on comb - type pilots is divided into pilot signal estimation and channel interpolation. The pilot signal estimation based on LS together with channel interpolation based on linear interpolation is studied. |
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| Keywords: | OFDM |
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