Low complexity multi-intelligent metasurface dynamic threshold phase shift design method

By adopting a low-complexity multi-intelligent metasurface dynamic threshold phase shift design method, the problems of high phase shift design complexity and insufficient performance of multi-intelligent metasurface assisted wireless communication systems are solved, achieving efficient channel quality improvement and beamforming effect.

CN117060964BActive Publication Date: 2026-06-23SOUTHEAST UNIV
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Patent Information

Application Number
CN202311096503.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-28
Publication Date
2026-06-23
Estimated Expiration
2043-08-28

AI Technical Summary

Technical Problem

Existing phase shift design methods for multi-intelligent metasurface-assisted wireless communication systems suffer from high computational complexity, inability to guarantee system gain performance, and neglect of discrete phase shift design in practical systems.

Method used

A low-complexity multi-intelligent metasurface dynamic threshold phase shift design method is adopted. By configuring a single antenna at the transmitter and receiver and deploying multiple intelligent metasurfaces in between, the electromagnetic wave path of each segment is calculated, and the intelligent metasurfaces are randomly selected for traversal search to obtain the optimal quantization threshold, thus transforming the ideal continuous phase shift into a discrete phase shift.

Benefits of technology

It effectively reduces computational complexity and approaches the performance limit of intelligent metasurface beamforming in the discrete domain in practical communication environments, improving the channel quality and communication performance of the system, and is practical and efficient.

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Abstract

The application discloses a low-complexity multi-intelligent metasurface dynamic threshold phase shift design method, belongs to the wireless communication field, and is used for a communication system in which a single antenna is configured at a sending end and a receiving end and multiple intelligent metasurfaces are deployed, the electromagnetic wave path of each section of electromagnetic wave from the sending end to the receiving end through each intelligent metasurface is calculated, the ideal continuous phase shift of each unit on each intelligent metasurface is calculated according to the electromagnetic wave path, one of the intelligent metasurfaces is selected, the optimal quantization threshold of the intelligent metasurface is obtained through exhaustive search, the optimal quantization threshold of other intelligent metasurfaces is calculated according to the optimal quantization threshold of the intelligent metasurface and the electromagnetic wave path through other intelligent metasurfaces, and the ideal continuous phase shift of each unit is converted into discrete phase shift by using the optimal quantization threshold of each intelligent metasurface. The method can guarantee high received signal energy with low phase shift design complexity, effectively improves the channel quality of the multi-intelligent metasurface assisted single-antenna communication system, and has strong practicability and high effectiveness.
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