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Estimation and compensation of timing drift for NR-based NTN system

Estimation and compensation of timing drift for NR-based NTN system

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Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019) — Recommend this title to your library

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The integration of satellite and terrestrial 5G (NR) networks aims to provide global coverage, improve service reliability, and enable the network scalability. However, the inherent characteristics of satellite channels bring challenges on the air interface design of integrated terrestrial-satellite networks. For example, due to the high-speed motion of low Earth orbit (LEO) satellite, timing drift has a serious impact on orthogonal frequency division multiplexing (OFDM)-based 5G (NR) system. In this chapter, we study the timing drift issue in the integration of satellite communication and 5G (NR) system. Signal processing-based methods are proposed to eliminate the impact of timing drift and the efficiency of the proposed methods is validated by simulation results.

Chapter Contents:

  • 59.1 Introduction
  • 59.2 Methodology
  • 59.2.1 Timing drift compensation method
  • 59.2.2 Calculating timing drift rate based on timing tracking
  • 59.2.3 Calculating timing drift rate based on frequency offset tracking
  • 59.3 Results
  • 59.4 Conclusion
  • References

Inspec keywords: mobile satellite communication; estimation theory; compensation; signal processing; 5G mobile communication

Other keywords: service reliability; low Earth orbit satellite; air interface design; timing drift estimation; orthogonal frequency division multiplexing; NR-based NTN system; timing drift compensation; OFDM; terrestrial-satellite networks; satellite communication channels; network scalability; 5G system; signal processing-based methods

Subjects: Mobile radio systems; Other topics in statistics; Satellite communication systems; Signal processing and detection

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