| 基于五次hermite插值的OFDM信道估计 |
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| 引用本文： | 阎巍,杜宏伟,曹敦.基于五次hermite插值的OFDM信道估计[J].微计算机信息,2011(5). |
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| 作者姓名： | 阎巍 杜宏伟 曹敦 |
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| 作者单位： | 长沙学院计算机科学与技术系;长沙理工大学计算机与通信工程学院; |
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| 基金项目： | 基金申请人:阎巍;项目名称:基于多重分形的无线信道建模及估计方法研究;基金颁发部门:湖南省科技厅(2010FJ6012) |
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| 摘 要： | 导频辅助信道估计方法是OFDM系统中的主要信道估计方法,可以使用LS(最小均方估计)估计导频点处的信道响应,然后通过插值算法来估计数据点的信道响应。该文提出五次hermite插值信道估计算法,目的是利用该插值算法在不同信噪比的环境下,降低误码率(BER)。通过仿真实验说明,该算法相对于传统的信道估计算法具有较良好的性能。相对于线性插值和三次样条插值,在不同的信噪比环境下具有较低的BER的优点。
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| 关 键 词： | OFDM 导频 插值 BER |
Channel estimation for OFDM based quintic hermite interpolation |
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| YAN Wei DU Hong-wei CAO Dun.Channel estimation for OFDM based quintic hermite interpolation[J].Control & Automation,2011(5). |
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| Authors: | YAN Wei DU Hong-wei CAO Dun |
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| Affiliation: | YAN Wei DU Hong-wei CAO Dun(Department of Computer Science,Changsha University,Changsha410003,China)(School Computer and Communication Engineering,Chang-sha University of Science and Technology,Changsha410114,China) |
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| Abstract: | The channel estimation based on the pilot is the main way of the OFDM system' channel estmation,using the LS(Leastsquare estimate) estimate the pilot points' channel response,then,to estimate the channel response by the interpolation algorithm.This paper initiates quintic hermite interpolation based on pilot channel estimation interpolation method,The aim is to reduce the bit error rate.Through the simulation,The results shows that the algorithm has a relatively good performance compared with the traditiona... |
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| Keywords: | OFDM Pilot Interpolation BER |
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