articleIEEE Transactions on Wireless CommunicationsJan 16, 2025GREEN OA

Holographic Metasurface-Based Beamforming for Multi-Altitude LEO Satellite Networks

QLQingchao LiMEMohammed El‐HajjarKCKaijun CaoCXChao XuHHHarald Haas

University of Southampton · University of Cambridge

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Abstract

Low Earth Orbit (LEO) satellite networks are capable of improving the global Internet service coverage. In this context, we propose a hybrid beamforming design for holographic metasurface based terrestrial users in multi-altitude LEO satellite networks. Firstly, the holographic beamformer is optimized by maximizing the downlink channel gain from the serving satellite to the terrestrial user. Then, the digital beamformer is designed by conceiving a minimum mean square error (MMSE) based detection algorithm for mitigating the interference arriving from other satellites. To dispense with excessive overhead of full channel state information (CSI) acquisition of all satellites, we propose a low-complexity MMSE…

Citation impact

65
total citations
FWCI
275.31
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100%
References
45
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Authors

6

Topics & keywords

Topics
Keywords
  • Beamforming
  • Computer science
  • Satellite
  • Holography
  • Remote sensing
  • Communications satellite
  • Altitude (triangle)
  • Telecommunications
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