| OFDM系统中信道估计的插值方法分析 |
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| 引用本文： | 孔繁庭.OFDM系统中信道估计的插值方法分析[J].甘肃联合大学学报(自然科学版),2012(1):47-50. |
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| 作者姓名： | 孔繁庭 |
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| 作者单位： | 甘肃联合大学电子信息工程信学院 |
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| 摘 要： | 近年来,正交频分复用(OFDM)技术已被越来越多的人所关注,并且在IEEE 802.11无线局域网中得到实际应用.在OFDM系统中一般要进行信道估计,本文对常用的四种信道估计插值方法进行了分析,并给出了仿真结果.结果表明,采用离散傅立叶插值所得到的效果最好;采用三阶样条曲线插值次之;采用基于二阶多项式插值的方法比三阶样条曲线插值又要差些;采用线性插值的方法所得到的效果最差.
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| 关 键 词： | 正交频分复用 信道估计 梳状导频 插值方法 |
Analysis on Interpolation Methods of Channel Estimation in OFDM System |
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| KONG Fan-ting.Analysis on Interpolation Methods of Channel Estimation in OFDM System[J].Journal of Gansu Lianhe University :Natural Sciences,2012(1):47-50. |
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| Authors: | KONG Fan-ting |
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| Institution: | KONG Fan-ting(School of Electronic and Information Engineering,Gansu Lanhe University,Lanzhou 730000,China) |
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| Abstract: | Recently orthogonal frequency division multiplexing(OFDM) has received more and more attention and has been applied to IEEE 802.11 wireless LAN.We usually apply channel estimation in OFDM system.In this paper,four interpolation methods of channel estimation were analyzed,and its simulation results were present.The results show that Discrete Fourier Transform(DFT) interpolation method obtains the best performance,following DFT interpolation is the three-order spline method,the second order polynomial method performs worse than tri-spline method,and the linear interpolation gets the worst results. |
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| Keywords: | orthogonal frequency division multiplexing(OFDM) channel estimation comb pilot Interpolation method |
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