Satellite communication weighting and rate maximization method based on dual-polarized intelligent metasurface

By introducing a dual-polarized smart metasurface into the satellite communication system, and jointly optimizing transmit beamforming, polarization shaping, and phase shift of the dual-polarized smart metasurface, the polarization mismatch and path loss problems in satellite communication are solved, thereby improving system performance and reliability.

CN122394643APending Publication Date: 2026-07-14ZHENGZHOU UNIVERSITY OF AERONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENGZHOU UNIVERSITY OF AERONAUTICS
Filing Date
2026-04-28
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing satellite communication systems face challenges such as polarization mismatch, path loss, and high propagation delay, especially in dense urban areas where direct-light links are prone to congestion. Furthermore, current research has failed to fully utilize the combined performance gains of dual-polarization transmission and smart reflectors.

Method used

A satellite communication method based on dual-polarized smart metasurfaces is adopted. By introducing polarization-reconfigurable antennas at both the satellite and user ends to work in concert with dual-polarized smart reflectors, the transmit beamforming, polarization shaping, and phase shift of the dual-polarized smart metasurface are jointly optimized to maximize the system weighted sum rate, solve the impact of channel depolarization, and enhance coverage.

Benefits of technology

It effectively solves the problem of reduced received signal power caused by polarization mismatch, significantly improves link reliability and system weighted sum rate, provides additional polarization domain degrees of freedom, suppresses inter-user interference, and achieves higher system performance at the same transmit power.

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Abstract

The application discloses a satellite communication weighted sum rate maximization method based on a dual-polarized intelligent metasurface, and belongs to the technical field of wireless communication. The system comprises a satellite equipped with multiple polarized reconfigurable antennas, a dual-polarized intelligent metasurface and multiple ground users equipped with a single polarized reconfigurable antenna. With the aim of maximizing the system weighted sum rate, under the constraints of satellite transmit power, polarization shaping phase and intelligent metasurface phase shift, the transmit beamforming vector, the dual-polarized intelligent metasurface phase shift vector, the polarization shaping phase of the satellite end and the user end are jointly optimized. An alternating optimization framework is adopted, the weighted least mean square error algorithm is used to solve the beamforming subproblem, and the Riemann conjugate gradient method is used to solve the transmit polarization shaping and metasurface phase shift subproblem. The application can effectively resist the polarization mismatch caused by the atmospheric depolarization effect, alleviate the path loss and blocking problem in satellite communication, and significantly improve the system weighted sum rate.
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