| 一种基于DFT的LTE下行信道估计算法 |
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| 引用本文： | 郭锐. 一种基于DFT的LTE下行信道估计算法[J]. 北京联合大学学报(自然科学版), 2011, 0(2): 20-23 |
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| 作者姓名： | 郭锐 |
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| 作者单位： | 西南交通大学,信息科学与技术学院,成都,610031 |
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| 摘 要： | 针对LTE的下行链路,提出了一种基于离散傅立叶变换(Discrete Fourier Transform,DFT)的信道估计算法,并与最小平方(Least Square,LS)估计算法和传统的基于DFT的信道估计算法进行性能比较。通过计算机仿真分析得出,所提出的信道估计算法能更好地抑制高斯白噪声的影响,与传统的基于DFT的信道估计相比有一定的性能增益,而且计算复杂度也较低,比较适合LTE下行链路。
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| 关 键 词： | LTE 信道估计 DFT OFDM 加窗 |
A DFT Based Channel Estimation Method for Downlink of LTE Systems |
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| GUO Rui. A DFT Based Channel Estimation Method for Downlink of LTE Systems[J]. Journal of Beijing Union University, 2011, 0(2): 20-23 |
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| Authors: | GUO Rui |
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| Affiliation: | GUO Rui(School of Information Science and Technology,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Aimed at the downlink of LTE systems,a channel estimation method based on Discrete Fourier Transform(DFT) is proposed.The performance of the proposed method is compared with the Least Square(LS) and traditional channel estimation based on DFT.By analyzing computer simulation results,the proposed method can well reduce the effect of Gaussian white noise and obtain a performance gain compared to traditional channel estimation based on DFT;it also has a low complexity.Therefore,it is appropriate for the downli... |
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| Keywords: | LTE channel estimation DFT OFDM windowing operation |
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