| OFDM中导频模式对信道估计性能的影响 |
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| 引用本文： | 梁婷,康桂华.OFDM中导频模式对信道估计性能的影响[J].河海大学常州分校学报,2007,21(4):17-20. |
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| 作者姓名： | 梁婷 康桂华 |
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| 作者单位： | 河海大学,计算机及信息工程学院,江苏,常州,213022 |
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| 摘 要： | 分析OFDM系统中基于导频的信道估计技术,重点研究块状导频和梳状导频的设置模式和在2种导频模式下信道估计的算法.在不同的信道条件下,对2种导频模式进行信道估计性能仿真比较.仿真结果表明,块状导频对信道衰落的快慢比较敏感,对频率选择性不敏感;梳状导频对信道衰落的快慢不敏感,但对频率选择性比较敏感.
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| 关 键 词： | OFDM 信道估计 块状导频 梳状导频 |
| 文章编号： | 1009-1130(2007)04-0017-04 |
| 修稿时间： | 2007年11月20 |
The Effect of Channel Estimation Performance of Pilot Patterns in OFDM System |
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| LIANG Ting,KANG Gui-hua.The Effect of Channel Estimation Performance of Pilot Patterns in OFDM System[J].Journal of Hohai University Changzhou,2007,21(4):17-20. |
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| Authors: | LIANG Ting KANG Gui-hua |
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| Abstract: | This paper analyze the channel estimation techniques for OFDM based on pilot.Both block-type pilot pattern and comb-type pilot pattern are studied and the performance of channel estimation algorithms based on above two pilots is compared in different channel scenarios,and then the simulation results show that block-type pilot is not sensitive to frequency selective fading channel but to the fading speed of channel while comb-type pilot is reversed. |
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| Keywords: | OFDM channel estimation block-type pilot comb-type pilot |
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