| 摘要: |
| 针对快速时变信道，提出了一种基于复指数基扩展模型（CE-BEM）的线性最小均方误差（LMMSE）信道估计方法，对信道估计的结果使用离散长椭球序列（DPSS）进行平滑处理，并相应提出了基于迭代的载波间干扰（ICI）消除信道均衡方法.仿真结果表明：在高多普勒信道场景下，该方法系统误码性能较传统信道估计方法有一定程度的提升. |
| 关键词: 信道估计 基扩展模型 快速时变信道 载波间干扰(ICI)消除 |
| DOI：10.3969/J.ISSN.1000-5137.2019.01.011 |
| 分类号: |
| 基金项目: |
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| Performance analysis of channel estimation based on base extended model under fast time-varying channels |
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MENG Dezhi1, WANG Yuwei2, WANG Mingjun3, QIN Qibo2, YU Hui2
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1.Safety and Quality Management Department, China Railway Construction Electrification Bureau Group Co., Ltd., Beijing 100043, China;2.School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3.Lalin Railway Construction General Command, Railway Corporation, Linzhi 860000, Xizang, China
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| Abstract: |
| In the fast time-varying channel scenario,a linear minimum mean square error (LMMSE) channel estimation method based on complex exponential basis extension model (CE-BEM) was proposed,and the channel estimation results were smoothed by use of discrete prolate spheroidal sequence (DPSS).Meanwhile,a channel equalization method based on iterative inter-carrier interference (ICI) cancellation was proposed.The simulation results showed that the proposed method had a better system error performance than traditional estimation method in the high Doppler channel scenario. |
| Key words: channel estimation base extended model fast time-varying channel inter-carrier interference (ICI) cancellation |
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