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Anti-interference channel selection method and system for cognitive satellite-ground network

A channel selection and satellite communication system technology, applied in the field of anti-jamming channel selection, can solve problems such as poor convergence effect and inaccurate selection of anti-jamming channels, achieve outstanding convergence performance, alleviate frequency shortages, and alleviate low spectrum utilization. Effect

Active Publication Date: 2022-07-01
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an anti-jamming channel selection method and system for a cognitive satellite-ground network, which solves the technical problems of poor convergence effect of existing algorithms and inaccurate selection of anti-jamming channels

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  • Anti-interference channel selection method and system for cognitive satellite-ground network
  • Anti-interference channel selection method and system for cognitive satellite-ground network
  • Anti-interference channel selection method and system for cognitive satellite-ground network

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Embodiment Construction

[0059] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention.

[0060] figure 1 The system model diagram of the cognitive satellite-ground network provided by the embodiment of the present invention, such as figure 1 As shown, the present invention relates to a multi-beam satellite communication system, each beam serving a specific area. GEO satellites and their fixed satellite receiving stations are primary users, while ground users are cognitive users, and each cognitive user corresponds to a communication link consisting of a transmitter and a receiver. Cognitive users obtain the available free spectrum information of primary satellite users through spectrum sensing or by querying local databases. The present invention considers the situation that there is no central controller, there are N c...

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Abstract

The invention relates to an anti-interference channel selection method and system for a cognitive satellite-ground network, and the method comprises the steps: modeling an anti-interference decision problem as a Stackelberg game based on an obvious layering behavior between cognitive users and external malicious interference, building a lower-layer sub-game model of a graph game according to the characteristic that the interference between the cognitive users presents local influence, and carrying out the calculation of the anti-interference channel selection of the cognitive satellite-ground network. And finally, the corresponding sub-game model is converged based on the hierarchical learning algorithm of local information interaction and the Q learning algorithm, compared with other algorithms, the convergence performance is outstanding, and the system average throughput of the algorithm is close to the optimal NE solution, so that the problems that the algorithm adopted in the prior art is poor in convergence effect and inaccurate in channel selection result are solved, and the channel selection efficiency is improved. The current situations of frequency shortage and low spectrum utilization rate are relieved, and the spectrum resource utilization rate is improved.

Description

technical field [0001] The invention relates to the field of communications, in particular to a method and system for selecting an anti-interference channel for a cognitive satellite-ground network. Background technique [0002] With the rapid development of information technology, the contradiction between "spectrum shortage" and "low spectrum utilization" has become increasingly prominent. Dynamic spectrum sharing between satellite-ground systems based on cognitive radio can effectively improve spectrum utilization efficiency and increase the integration of satellite and ground. information service capabilities of the network. At present, there are many studies on the spectrum sharing of cognitive satellite-ground networks. For example, some literature studies use beamforming technology to study the spectrum sharing problem of satellite and terrestrial networks. The satellite uplink users are the main users, and the ground downlink users are the cognitive users. user. So...

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Application Information

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IPC IPC(8): H04W72/08H04B7/185H04B17/382
CPCH04B17/382H04B7/18517H04W72/541Y02D30/70
Inventor 贾录良王梦阳储飞黄方胜良颜培杰李海滨吴署光杨忠霖周尚辉胡豪杰万颖
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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