快速检索:      
引用本文:
【打印本页】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 5039次   下载 2122 本文二维码信息
码上扫一扫!
分享到: 微信 更多
地铁隧道场景中时延估计的改进算法
王利森, 李莉, 吴静芳, 魏爽, 周小平
上海师范大学 信息与机电工程学院, 上海 200234
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.
关键词:  地铁隧道场景  毫米波传输  时延扩散
DOI:10.3969/J.ISSN.1000-5137.2019.01.002
分类号:
基金项目:上海市自然科学基金(16ZR1424500)
Improved algorithm for time delay estimation in subway tunnel scenario
WANG Lisen, LI Li, WU Jingfang, WEI Shuang, ZHOU Xiaoping
College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China
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.
Key words:  subway tunnel scenario  millimeter wave transmission  time delay spread