Multi-beam satellite communication robust beamforming method, device and storage medium

A satellite communication, multi-beam technology, applied in sustainable communication technology, advanced technology, climate sustainability, etc., can solve the problem that satellites cannot obtain channel state information, achieve safety and energy consumption, improve energy efficiency and safety The effect of performance, good suppression effect

Active Publication Date: 2022-06-17
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0003] In the actual satellite communication system, since the eavesdropper is usually not a legitimate user in the system, the satellite cannot obtain its perfect channel state information

Method used

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  • Multi-beam satellite communication robust beamforming method, device and storage medium
  • Multi-beam satellite communication robust beamforming method, device and storage medium
  • Multi-beam satellite communication robust beamforming method, device and storage medium

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Embodiment Construction

[0062] Below in conjunction with accompanying drawing, technical scheme of the present invention is further described:

[0063] like figure 1 As shown, the multi-beam satellite communication system of the present invention includes a geostationary orbit satellite configured with N beams, a legal user and K eavesdroppers. Eavesdroppers use cooperative eavesdropping to try to eavesdrop on signals sent by satellites.

[0064] In order to improve the safety and energy efficiency of the satellite communication system, the present invention proposes a robust beamforming method for multi-beam satellite communication based on the safety and energy efficiency maximization criterion, such as figure 2 shown, including the following steps:

[0065] Step 1. Initialize satellite parameters. The satellite parameters include the maximum transmit power of the satellite and the system safety rate threshold of the satellite communication system. Generally, the satellite parameters are set man...

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Abstract

The invention discloses a multi-beam satellite communication robust beamforming method, device and storage medium in the field of wireless communication security, aiming to solve the technical problems of insufficient security and energy efficiency of a satellite communication system. It includes: initializing the maximum transmission power of the satellite and the system safety rate threshold; obtaining the objective optimization function of maximizing safety and energy efficiency according to the satellite parameters; using auxiliary variables and the Dinkelbach algorithm to convert the objective optimization function into an equivalent convex difference programming problem; using the penalty function The convex-difference programming problem is transformed into a convex optimization problem by the method of concave-convex process method and the convex optimization problem is processed by iterative algorithm and eigenvalue decomposition, and the robust beamforming weight vector is obtained. The invention has better restraining effect on eavesdropper's eavesdropping, and can well realize the compromise between the safety and energy consumption of the satellite communication system.

Description

technical field [0001] The invention relates to a multi-beam satellite communication robust beam forming method, device and storage medium thereof, belonging to the technical field of wireless communication physical layer security. Background technique [0002] The wide-area coverage characteristics of satellite communication and the broadcasting characteristics of satellite channels make the private information sent by communication satellites to legitimate users easily eavesdropped by illegal users in the coverage area. With the rapid development of satellite communication, the security problem of satellite communication has become increasingly prominent. . As an effective means to realize the security of the physical layer of wireless communication, beamforming technology can not only enhance the signal strength received by legitimate users, but also effectively reduce the signal strength received by eavesdroppers. At the same time, the increase in data traffic and energ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185
CPCH04B7/18513Y02D30/70
Inventor 林敏顾晨伟解路瑶赵柏欧阳键
Owner NANJING UNIV OF POSTS & TELECOMM
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