Safe beam forming method and device based on IRS

A beamforming and security technology, applied in the field of communication, can solve the problems that jammer technology has not been studied

Active Publication Date: 2020-12-11
ZHENGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The further research and development of the sixth generation communication technology (6G) can meet the needs of the future ubiquitous Internet of things (IoT), but the architecture of 6G&IoT has resource allocation between devices, sustainable communication, and information se...

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  • Safe beam forming method and device based on IRS
  • Safe beam forming method and device based on IRS
  • Safe beam forming method and device based on IRS

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Embodiment Construction

[0067] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0068] The present invention provides an IRS-based safe beamforming method and device. Considering the constraints of secrecy rate, transmission power and IRS reflection phase shift, and aiming at maximizing the energy harvesting power, the transmit beamforming matrix of the base station, the covariance matrix of the jammer and the IRS phase ...

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Abstract

The invention relates to a safety beam forming method and device based on an IRS. The method comprises the steps of establishing an SWIPT Internet of Things system model based on IRS assistance; jointly optimizing a base station transmitting beam forming matrix, a jammer covariance matrix and an IRS phase shift, and constructing an optimization problem of maximized energy collection; and using a relaxation variable, a semi-definite relaxation method, an auxiliary variable and a sequence parameter convex approximation method for converting a non-convex quadratic problem into an equivalent convex problem, and providing an alternate iterative optimization algorithm for obtaining a feasible solution of an original problem. According to the invention, the IRS and a jammer are combined to establish a secret communication link of the SWIPT Internet of Things system based on IRS assistance, and the base station transmitting beam forming matrix, the jammer covariance matrix and the IRS phase shift are optimized in a combined manner, so that the communication security is improved, and the energy collection capability of the system is enhanced at the same time.

Description

technical field [0001] The invention belongs to the technical field of communications, and in particular relates to an IRS-based safe beamforming method and device. Background technique [0002] The further research and development of the sixth generation communication technology (6G) can meet the needs of the future ubiquitous Internet of things (IoT), but the architecture of 6G&IoT has resource allocation between devices, sustainable communication, and information security. And so on a series of questions. With the rapid increase of information transmission rate and the number of mobile terminals, the security and reliability of information transmission is particularly important. [0003] Simultaneous wireless information and power transfer (SWIPT) is a radio frequency energy harvesting technology, that is, wireless information and energy are transmitted at the same time. The difference from wireless power transfer is that information is transmitted while energy is intera...

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Application Information

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IPC IPC(8): H04B7/0426H04B7/06H04B7/08H04W24/02
CPCH04B7/043H04B7/0617H04B7/086H04W24/02H04B7/04013
Inventor 朱政宇孙钢灿徐金雷林宇郝万明刘沛佳李双志郭亚博
Owner ZHENGZHOU UNIV
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