| 基于特定导频OFDM信道估计的研究 |
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| 引用本文： | 郭滨,刘大力,Gasumba I.基于特定导频OFDM信道估计的研究[J].电信科学,2011,27(6):89-92. |
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| 作者姓名： | 郭滨 刘大力 Gasumba I |
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| 作者单位： | 长春理工大学电子信息工程学院; |
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| 摘 要： | 在OFDM系统中,准确的信道估计是对抗瑞利衰落信道中信道干扰的关键。提出了一种对OFDM信道估计的新方法,利用CR Spline函数的插值方法,设计一个特定的导频结构,从而导出信道估计的CR Spline函数形式,用该函数近似信道衰落包络。实验结果表明,仅用少量导频就可以近似出信道特性,并具有良好的平滑性。计算机仿真证明了提出算法的有效性。
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| 关 键 词： | 信道估计 OFDM ICI 快衰落 CRSpline 多普勒频移 |
Study on Channel Estimation for OFDM Systems Based on Specific Pilots |
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| Guo Bin,Liu Dali,Gasumba I.Study on Channel Estimation for OFDM Systems Based on Specific Pilots[J].Telecommunications Science,2011,27(6):89-92. |
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| Authors: | Guo Bin Liu Dali Gasumba I |
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| Affiliation: | Guo Bin,Liu Dali,Gasumba I(School of Electronics and Information Engineering,Changchun University of Science and Technology,Changchun 130022,China) |
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| Abstract: | In OFDM systems,accurate channel estimation is the key to against the effect of the interchannel interference in a multipath Rayleigh fading channel.In this paper,a novel channel estimation method for mobile OFDM systems is proposed by using the interpolation technique based on Catmull-Rom(CR) Spline function.Using CR Spline function interpolation method to design a specific pilot structure,This leads to a CR Spline function form for channel estimation.This method can estimation the channel fading envelope ... |
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| Keywords: | channel estimation OFDM ICI fast fading CR Spline doppler shift |
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