| OFDM-UWB系统中基于不同插值方法的信道估计 |
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| 引用本文： | 阴亚芳,李晓梅.OFDM-UWB系统中基于不同插值方法的信道估计[J].西安邮电学院学报,2010,15(5):1-4. |
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| 作者姓名： | 阴亚芳 李晓梅 |
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| 作者单位： | [1]西安邮电学院电子工程学院,陕西西安710121 [2]西安邮电学院通信与信息工程学院,陕西西安710121 |
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| 基金项目： | 陕西省教育厅专项科研计划资助项目 |
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| 摘 要： | 为得到适于OFDM-UWB系统的信道估计方法,通过分析线性插值、高斯插值和DFT时域补零插值法来获得完整信道响应的估计,得到最小的均方误差。仿真结果表明,对于UWB室内信道中的CM1和CM4两种信道模型,在低信噪比时可以采用复杂度较低的线性插值算法,在高信噪比时可以采用DFT时域补零插值算法。
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| 关 键 词： | 正交频分复用 超宽带 信道估计 最小二乘算法 |
Channel Estimation for OFDM-UWB system based on different interpolation methods |
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| YIN Ya-fang,LI Xiao-mei.Channel Estimation for OFDM-UWB system based on different interpolation methods[J].Journal of Xi'an Institute of Posts and Telecommunications,2010,15(5):1-4. |
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| Authors: | YIN Ya-fang LI Xiao-mei |
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| Affiliation: | 1.School of Electronic Engineering,Xi＇an University of Posts and Telecommunications,Xi＇an 710121,China;2.School of Communication and Information Engineering,Xi＇an University of Posts and Telecommunications,Xi＇an 710121,China) |
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| Abstract: | In order to get the suitable channel estimation for OFDM-UWB system,the linear interpolation,Gauss interpolation and DFT time-domain zero-padding interpolation method are analyzed to get the full channel responses with the minimum mean square error.Simulation results show that for channel CM1 and CM4,the linear interpolation method of low complexity can be adopted in low SNR,and the DFT method can be adopted in high SNR. |
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| Keywords: | OFDM UWB Channel Estimation LS |
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