| 快速时变信道下的基扩展模型信道估计性能分析 |
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| 引用本文： | 孟德智,王钰炜,王明军,秦启波,俞晖.快速时变信道下的基扩展模型信道估计性能分析[J].上海师范大学学报(自然科学版),2019,48(1):64-69. |
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| 作者姓名： | 孟德智 王钰炜 王明军 秦启波 俞晖 |
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| 作者单位： | 中国铁建电气化局集团有限公司安全质量管理部;上海交通大学电子信息与电气工程学院;铁路总公司拉林铁路建设总指挥部 |
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| 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.
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| 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 |
| 收稿时间： | 2018/10/19 0:00:00 |
Performance analysis of channel estimation based on base extended model under fast time-varying channels |
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| MENG Dezhi,WANG Yuwei,WANG Mingjun,QIN Qibo and YU Hui.Performance analysis of channel estimation based on base extended model under fast time-varying channels[J].Journal of Shanghai Normal University(Natural Sciences),2019,48(1):64-69. |
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| Authors: | MENG Dezhi WANG Yuwei WANG Mingjun QIN Qibo and YU Hui |
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| Institution: | Safety and Quality Management Department, China Railway Construction Electrification Bureau Group Co., Ltd., Beijing 100043, China,School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China,Lalin Railway Construction General Command, Railway Corporation, Linzhi 860000, Xizang, China,School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China and School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, 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. |
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| Keywords: | channel estimation base extended model fast time-varying channel inter-carrier interference (ICI) cancellation |
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