| 地铁隧道场景中时延估计的改进算法 |
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| 引用本文： | 王利森,李莉,吴静芳,魏爽,周小平. 地铁隧道场景中时延估计的改进算法[J]. 上海师范大学学报(自然科学版), 2019, 48(1): 7-12 |
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| 作者姓名： | 王利森 李莉 吴静芳 魏爽 周小平 |
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| 作者单位： | 上海师范大学信息与机电工程学院 |
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| 基金项目： | 上海市自然科学基金（16ZR1424500） |
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| 摘 要： | 基于地铁隧道场景,利用射线跟踪法,将多径效应产生的时延估计问题转化为在立体空间中求解不同路径之间的时间差问题.不同于发射端与接收端相对静止的情况,考虑列车在高速运行时具有的多普勒效应,提出了在接收与发射端运动状态下的时延估计改进方法.仿真结果表明:相较于在收发端相对静止状态下估计得到的时延参数,改进方法的结果与实际场景更加匹配.
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| 关 键 词： | 地铁隧道场景 毫米波传输 时延扩散 |
| 收稿时间： | 2018-10-09 |
Improved algorithm for time delay estimation in subway tunnel scenario |
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| WANG Lisen,LI Li,WU Jingfang,WEI Shuang and ZHOU Xiaoping. Improved algorithm for time delay estimation in subway tunnel scenario[J]. Journal of Shanghai Normal University(Natural Sciences), 2019, 48(1): 7-12 |
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| Authors: | WANG Lisen LI Li WU Jingfang WEI Shuang ZHOU Xiaoping |
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| Affiliation: | College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China,College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China,College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China,College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China and College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China |
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| Abstract: | Based on the subway tunnel scenario,the time delay estimation problem generated by the multipath effect was transformed into the problem of solving the time difference among different paths in the three-dimensional space by the ray tracing method.An improved estimation method was proposed under the motion scenario considering the Doppler effect when the train running at high speed,which was different from the case of the relative static of the transmitter and receiver.The simulation results showed that the improved method was better matched with the actual scene than the method estimated in the relative static state of the receiver. |
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| Keywords: | subway tunnel scenario millimeter wave transmission time delay spread |
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