Shortwave massive MIMO communication system and frequency selection method fusing dynamic frequency selection

CN122421035APending Publication Date: 2026-07-17ARMY ENG UNIV OF PLA
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ARMY ENG UNIV OF PLA
Filing Date
2026-04-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing automatic frequency selection mechanisms are mainly designed for single-antenna scenarios. Research on dynamic frequency selection in multi-antenna scenarios, especially large-scale MIMO systems, is lacking. This makes it difficult to adapt to dynamic changes in the ionosphere, resulting in poor communication performance and reduced system reliability.

Method used

By combining a dynamic frequency selection framework with massive MIMO technology, the optimal frequency scanning window is dynamically determined by acquiring real-time ionospheric conditions, frequency scanning and channel state information estimation are performed, the target communication frequency is selected using a signal-to-noise ratio threshold, and massive MIMO precoding technology is used for communication.

Benefits of technology

It significantly improves frequency selection efficiency and communication link quality in multi-antenna scenarios, enhances the system's adaptability to dynamic changes in the ionosphere, optimizes spectral efficiency and signal gain, and improves data transmission rate and communication stability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122421035A_ABST
    Figure CN122421035A_ABST
Patent Text Reader

Abstract

The application discloses a short-wave large-scale MIMO communication system and a frequency selection method fusing dynamic frequency selection. In view of the problem that the existing automatic frequency selection mechanism is only applicable to a single antenna and is difficult to adapt to the dynamic change of the ionosphere, the scheme integrates a dynamic frequency selection framework with a large-scale MIMO technology, establishes a multi-user large-scale MIMO signal model, adopts omni-directional precoding based on a Zadoff-Chu sequence to perform frequency sweeping and statistical channel estimation. According to the current time, the frequency scanning window is dynamically adjusted, and the optimal frequency is quickly locked in combination with a signal-to-noise ratio threshold decision rule. The method fully gives play to the spectral efficiency advantage of the large-scale MIMO, and significantly improves the link reliability, data throughput and environmental adaptability of the short-wave communication in a complex environment.
Need to check novelty before this filing date? Find Prior Art