Doppler Shift Estimation and Compensation under Satellite Networking System

被引：0
|
作者：
Zhu J. [1 ]
Li Q.-J. [1 ]
Li K. [2 ]
Wang H.-J. [3 ]
机构：
[1] School of Electronic Information Engineering, Anhui University, Hefei
[2] School of Creativity and Art, Shanghai University of Science and Technology, Shanghai
[3] Shanghai Microsystems, Chinese Academy of Sciences Institute of Information Technology, Shanghai
来源：
Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications | 2020年 / 43卷 / 03期
关键词：
Doppler frequency shift; Geographic information; Non-territory networking; Satellite communication; Virtual cell;
D O I：
10.13190/j.jbupt.2019-178
中图分类号：
学科分类号：
摘要：
Aiming at problems such as lack of satellite networking capabilities in current satellite mobile communication systems, a Doppler frequency shift estimation and compensation algorithm based on virtual satellite cell networking is proposed on the basis of non-terrestrial networks. By introducing a centralized control unit, the user equipment can quickly select the satellite with the smallest Doppler frequency shift, and at the same time, the Doppler shift value is compensated, updated and re-compensated according to the transmission delay and the satellite ephemeris. Simulations show that, compared with the traditional algorithm, this algorithm effectively reduces the Doppler frequency shift, and improves the quality of satellite communication links and access success rate. © 2020, Editorial Department of Journal of Beijing University of Posts and Telecommunications. All right reserved.
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页码：66 / 71
页数：5
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