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Secure communication method based on intelligent metasurface in radiation mode

A technology of secure communication and radiation mode, which is applied in the field of secure communication based on intelligent metasurfaces in radiation mode, and can solve problems such as high cost, increased hardware complexity at the radio frequency end, and high power consumption

Pending Publication Date: 2022-04-26
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

With the increase in the number of antennas, traditional multi-antenna and large-scale antenna systems have the problem of increased hardware complexity at the radio frequency end, resulting in high cost and high power consumption

Method used

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  • Secure communication method based on intelligent metasurface in radiation mode
  • Secure communication method based on intelligent metasurface in radiation mode
  • Secure communication method based on intelligent metasurface in radiation mode

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Embodiment Construction

[0108] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0109] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relationship between the components in a certain posture (as shown in the drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indica...

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Abstract

The invention relates to a secure communication method based on an intelligent metasurface in a radiation mode. The method comprises the following steps: constructing a secure communication scene; the secure communication scene comprises a transmitting base station, a legal user, a jammer and an eavesdropping machine; the transmitting base station comprises a transmitter and an intelligent metasurface in a radiation mode; the intelligent metasurface communicates with the legal user and the eavesdropper through the first channel and the second channel respectively; the jammer communicates with the legal user and the eavesdropper through a third channel and a fourth channel respectively; the transmission power and the phase beam are used as optimization variables, the minimum power of a transmitting base station is used as an optimization target, constraint conditions are set according to the rate outage probability of a legal user, the secrecy rate outage probability of the target and intelligent metasurface unit amplitude normalization, and a target function is constructed; and solving the objective function to obtain the optimal transmission power and phase beam in the secure communication scene. According to the invention, anti-interference and anti-eavesdropping can be realized at the same time, and the cost and power consumption are reduced at the same time.

Description

technical field [0001] The present application relates to the technical field of wireless communication security and smart metasurfaces, in particular to a method for safe communication based on smart metasurfaces in a radiation mode. Background technique [0002] Due to the openness of wireless channels, wireless communication systems face various security threats such as interference and eavesdropping attacks. [0003] Multi-antenna technology and large-scale antenna array technology can extend the communication anti-jamming capability from two dimensions of time domain and frequency domain to space through adaptive spatial filtering, interference position / eavesdropping position beam zeroing and other methods by using wireless channel space resources. Dimension, gaining space gain while only increasing the number of antenna arrays without occupying additional spectrum resources, and further improving anti-jamming and anti-interception capabilities. With the increase in th...

Claims

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Application Information

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IPC IPC(8): H04B7/06
CPCH04B7/0617Y02D30/70H04B7/04013
Inventor 朱勇刚安康李萌孙艺夫李勇李程
Owner NAT UNIV OF DEFENSE TECH
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