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Multi-beam satellite communication robust beam forming method and device and storage medium thereof

A satellite communication, multi-beam technology, applied in sustainable communication technology, radio transmission system, advanced technology, etc., can solve the problem that satellites cannot obtain channel status information.

Active Publication Date: 2021-01-08
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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AI Technical Summary

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 beam forming method and device and storage medium thereof
  • Multi-beam satellite communication robust beam forming method and device and storage medium thereof
  • Multi-beam satellite communication robust beam forming method and device and storage medium thereof

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Embodiment Construction

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

[0063] Such as 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 attempt to eavesdrop on signals sent by satellites by cooperatively eavesdropping.

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

[0065] Step 1. Initialize the satellite parameters. The satellite parameters include the maximum transmit power of the satellite and the system security rate threshold of the satellite communication system. Generally, the satelli...

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Abstract

The invention discloses a multi-beam satellite communication robust beam forming method and device and a storage medium thereof in the field of wireless communication security, and aims to solve the technical problems of insufficient security and energy efficiency of a satellite communication system. The method comprises the following steps: initializing the maximum transmitting power of a satellite and a system safety rate threshold; obtaining a target optimization function with maximized safety energy efficiency according to the satellite parameters; converting the target optimization function into an equivalent convex difference planning problem by utilizing an auxiliary variable and a Dinkelbach algorithm; converting a convex difference planning problem into a convex optimization problem by utilizing a penalty function method and a concave-convex process method; and processing the convex optimization problem by using an iterative algorithm and eigenvalue decomposition to obtain a robust beamforming weight vector. The method has a better inhibition effect on eavesdropping of an eavesdropper, and can well realize compromise between satellite communication system safety and energyconsumption.

Description

technical field [0001] The invention relates to a multi-beam satellite communication robust beamforming method, device and storage medium thereof, and belongs to the technical field of wireless communication physical layer security. Background technique [0002] The wide-area coverage characteristics of satellite communications and the broadcast 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 communications, the security problems of satellite communications have 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 ene...

Claims

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Application Information

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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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