%0 Journal Article
%T 基于铁道OFDM系统的信道估计改进算法的研究<br>The improved channel estimation algorithm for railway OFDM system
%A 金咪
%A 徐岩&lt
%A br&gt
%A JIN Mi
%A XU Yan
%J 铁道科学与工程学报
%D 2017
%X 针对铁路通信系统，在深入研究信道估计方法的基础上，从提高导频子信道估计精度与提高数据子信道估计精度2个方面，提出一种改进型的信道估计算法。在提高导频子信道估计精度方面，利用降噪的处理来解决，在提高数据子信道估计精度方面，利用非线性内插来解决，这样使得所提出的方法具有低的计算复杂度和高的估计精度，改进算法经计算机仿真后证明其有效性，也为今后OFDM信道估计的进一步研究开拓思路。<br>On the basis of in-depth study of channel estimation methods, from the aspects of improving pilot sub-channel estimation accuracy and improve the accuracy of the data sub-channels estimation accuracy, the authors proposed an improved channel estimation algorithm in railway telecommunication. In terms of improving the accuracy of pilot sub-channels estimated using the noise reduction processing to solve, in terms of improving accuracy estimates sub-channel data using non-linear interpolation to solve, such that the proposed method has a low computational complexity and high estimation accuracy. The improved algorithm by computer simulation to prove its effectiveness, and also pioneering ideas for further study OFDM channel estimation
%K 铁道通信
%K 正交频分复用
%K 信道估计
%K 仿真算法
%K 无线通信
%K 4G
%K LTE&lt
%K br&gt
%K railway telecommunication
%K orthogonal frequency division multiplexing
%K channel estimation
%K simulation algorithm
%K wireless communication
%K 4G
%K LTE
%U http://www.jrse.cn/paper/paperView.aspx?id=paper_316529