Doppler Shift Estimation and Compensation under Satellite Networking System

doi:10.13190/j.jbupt.2019-178

Journal of Beijing University of Posts and Telecommunications ›› 2020, Vol. 43 ›› Issue (3): 66-71.doi: 10.13190/j.jbupt.2019-178

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Doppler Shift Estimation and Compensation under Satellite Networking System

ZHU Jun¹, LI Qiu-jin¹, LI Kai², WANG Hua-jun³

1. School of Electronic Information Engineering, Anhui University, Hefei 230601, China;
2. School of Creativity and Art, Shanghai University of Science and Technology, Shanghai 200135, China;
3. Shanghai Microsystems, Chinese Academy of Sciences Institute of Information Technology, Shanghai 200135, China

Received:2019-08-28 Online:2020-06-28 Published:2020-06-24
Supported by:

Abstract

Abstract: 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.

Key words: satellite communication, non-territory networking, virtual cell, Doppler frequency shift, geographic information

CLC Number:

TN927.23

ZHU Jun, LI Qiu-jin, LI Kai, WANG Hua-jun. Doppler Shift Estimation and Compensation under Satellite Networking System[J]. Journal of Beijing University of Posts and Telecommunications, 2020, 43(3): 66-71.

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Doppler Shift Estimation and Compensation under Satellite Networking System

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