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5G Impacts analysis on the Beidou RDSS system in 2.5 GHz band

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Abstract

Beidou and 5G systems are important national-level basic projects. Beidou’s Radio Determination Satellite Service (RDSS) provides a unique service compared with other Global Navigation Satellite System (GNSS). The working RDSS frequency is close to 5G, and the received power is far less than 5G. Thus, RDSS is vulnerable to interference from 5G and loses normal function. The basic theory is the core evaluation model of the Adjacent Channel Interference Ratio (ACIR). Three critical factors, the 5G system, the signal design, and the receiver of RDSS are extracted and considered under the rule of ACIR. We obtained the safe distance making the two systems coexist by the deterministic analysis method and used the method of Monte Carlo system simulation to analyze the effects on Carrier-to-Noise power spectral density ratio (CN0), positioning and communication of RDSS users due to 5G adjacent interference. Three different types of Radio Frequency (RF) front-ends are designed, and their performance in suppressing adjacent frequency interference is analyzed under actual signal conditions. Through this research, we summarize the exact scope of adjacent frequency impact from two aspects of 5G and RDSS systems. Suggestions on how to enhance the electromagnetic protection ability are made for RDSS receivers.

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The experimental data of this study are available from the corresponding author for academic purposes on reasonable request.

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Acknowledgements

This work was supported by the key Research and Development Plan of Shanxi Province (Grant No. 2021ZDLGY08-03) and the National Natural Science Foundation of China (Grant No. 41474027). The authors want to thank the anonymous reviewers for their thoughtful comments that helped improve our research.

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Authors and Affiliations

  1. School of Electronic Engineering, Xi’an University of Posts and Telecommunications, Xi’an, 710121, China

    Qian Wang & Fangyuan Cheng

  2. Beijing Satellite Navigation Center, Beijing, 100094, China

    Tianqiao Zhang

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  1. Qian Wang
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  2. Fangyuan Cheng
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  3. Tianqiao Zhang
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Correspondence to Qian Wang.

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Wang, Q., Cheng, F. & Zhang, T. 5G Impacts analysis on the Beidou RDSS system in 2.5 GHz band. GPS Solut 27, 24 (2023). https://doi.org/10.1007/s10291-022-01359-4

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