Robust wireless energy-carrying relay cooperation security communication method

A wireless energy-carrying, collaborative security technology, applied in wireless communication, security devices, energy reduction, etc., can solve problems such as system performance degradation, eavesdroppers are not considered, and perfect channel state information cannot be obtained from relays to eavesdroppers. To achieve the effect of increasing the confidentiality rate

Active Publication Date: 2021-10-01
HENAN UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

It solves the problem of severe system performance degradation caused by not considering the eavesdropper and failing to obtain the perfect channel state information relayed to the eavesdropper in the prior art

Method used

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  • Robust wireless energy-carrying relay cooperation security communication method
  • Robust wireless energy-carrying relay cooperation security communication method
  • Robust wireless energy-carrying relay cooperation security communication method

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Embodiment Construction

[0084] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0085] The robust wireless energy-carrying relay cooperative security communication method of the present invention includes the following steps:

[0086] Step 1: Construct the physical model of the wireless energy carrying relay safety communication network attached to the present invention, such as figure 1 As shown, it includes a transmitter s, a legal receiver d, N wireless energy-carrying relay nodes r using amplification-forwarding technology, and K eavesdroppers e who expect to obtain relay forwarding i...

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Abstract

The invention discloses a robust wireless energy-carrying relay cooperative secure communication method, which comprises the following steps of: constructing a wireless sensor network system model of wireless energy-carrying relay cooperation, and subtracting the channel capacity of the strongest eavesdropper from the channel capacity of a legal receiving end to obtain a system secrecy rate; and converting the solving process into a problem of maximizing the secrecy rate under the worst condition, and efficiently solving the problem through an iterative optimization algorithm to obtain a vector and a relay power distribution factor. According to the method, a problem is modeled into a maximum and minimum problem, a slack variable is introduced, the problem is converted into an upper-layer problem and a lower-layer problem, and the upper-layer problem is converted into a standard convex problem through conversion in a fractional quadratic programming form; and an iterative algorithm is designed to solve the two problems at the same time so as to obtain the optimal beam forming vector at the relay. And then an optimal power distribution factor of the relay is obtained by using one-dimensional search. According to the method, the secrecy rate when the relay cannot acquire perfect channel state information of an eavesdropper can be remarkably improved.

Description

[0001] The invention relates to the technical field of wireless sensor network communication, in particular to a robust wireless energy-carrying relay cooperative safety communication method. Background technique [0002] With the advancement of wireless communication technology, wireless sensor network (WSN) technology has been fully developed, and a large number of wireless sensors have been put into use. Due to the size limitation of wireless sensors, they can only be equipped with a single antenna, and cannot use multiple-input multiple-output (MIMO) technology. Beamforming obtains spatial gain for better transmission performance. However, there are often a large number of nodes in the Internet of Things. Using these nodes, relay cooperation technology can provide a feasible solution to the above problems, that is, use other nodes in the Internet of Things to act as relays for cooperative information transmission to obtain good results. Space diversity gain. However, coop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/22H04W12/126H04W84/18
CPCH04W40/22H04W12/126H04W12/009H04W84/18Y02D30/70
Inventor 金勇郭睿杰白可李军伟胡振涛周林魏倩
Owner HENAN UNIVERSITY
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