| 基于LTE的导频信道估计研究 |
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| 引用本文： | 李科,刘健.基于LTE的导频信道估计研究[J].通信技术,2011,44(12):4-6. |
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| 作者姓名： | 李科 刘健 |
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| 作者单位： | 1. 重庆邮电大学通信与信息工程学院,重庆,400065
2. 北京科技大学先进网络技术与新业务研究所,北京100083;电子科技大学通信与信息工程学院,四川成都611731 |
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| 摘 要： | 正交频分复用(OFDM,Orthogonal Frequency Division Multiplexing)技术是长期演进(LTE,Long Term Evolution)的核心技术之一.目前,基于导频的信道估计是OFDM系统中信道估计的常用方式.在基于导频的信道估计方式下,结合LS估计算法提出了一种下向插值算法(DWI).在LTE信道模型及导频结构下,通过MATLAB仿真工具,将该算法和现有各种算法的性能进行了比较和分析.仿真结果表明,使用结合LS估计算法和DWI算法的OFDM系统信道估计机制,具有复杂度低、易于实现的优点.
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| 关 键 词： | 正交频分复用 信道估计 导频 内插算法 长期演进 |
Research on LTE-based Pilot-symbol-aided Channel Estimation Algorithm |
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| LI Ke
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LIU Jian.Research on LTE-based Pilot-symbol-aided Channel Estimation Algorithm[J].Communications Technology,2011,44(12):4-6. |
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| Authors: | LI Ke LIU Jian |
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| Affiliation: | ②③(①College of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;②Institute of Advanced Network Technologies and New Business,Beijing University of Science and Technology,Beijing 100083,China;③College of Communication and Information Engineering,University of Electronic Science and Technology of China, Chengdu Sichuan 611731,China) |
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| Abstract: | Orthogonal Frequency Division Multiplexing(OFDM) technology is one of the key technologies for LTE-A.Meanwhile,pilot-symbol-aided channel estimation algorithm is an important method in OFDM system.In combination with LS estimation algorithm based on pilot-symbol-aided channel estimation,a DownWard-Interpolation(DWI) algorithm is proposed.Through MATLAB simulation analysis,the performances of various channel estimation algorithms under the LTE channel model and pilot signal structure are compared.The simulat... |
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| Keywords: | OFDM channel estimation pilot interpolation algorithm LTE |
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