%0 Journal Article
%A LI Kai
%A LI Qiu-jin
%A WANG Hua-jun
%A ZHU Jun
%T Doppler Shift Estimation and Compensation under Satellite Networking System
%D 2020
%R 10.13190/j.jbupt.2019-178
%J Journal of Beijing University of Posts and Telecommunications
%P 66-71
%V 43
%N 3
%X 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.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2019-178