Secure communication method in non-orthogonal multiple access network assisted by intelligent reflecting surface

A non-orthogonal multiple access, access network technology, applied in the field of multi-user non-orthogonal multiple access network security, can solve the problem that the user's information is easy to be obtained by eavesdroppers, the security problem is serious, and the amount of eavesdroppers is attenuated. question
CN112672375APending Publication Date: 2021-04-16DALIAN UNIV OF TECH
0 Cites 16 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2021-04-16

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a secure communication method in a non-orthogonal multiple access network assisted by an intelligent reflecting surface, and belongs to the field of multi-user non-orthogonal multiple access network security. By superposing a proper amount of artificial noise in transmitted NOMA information and jointly optimizing an IRS reflection phase, a transmitted beam vector and an artificial noise vector, the sum of transmission rates of legal users is maximized. In addition, the artificial noise signal for controlling transmission can be completely eliminated by a serial interference elimination technology at each legal user side, so that eavesdropping is effectively inhibited under the condition of not influencing legal receiving. Compared with an OMA (Orthogonal Multiple Access) scheme without artificial noise and assisted by a traditional reflecting surface, the invention has the advantages that the network security performance can be remarkably improved, and the application value is very high.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of multi-user non-orthogonal multiple access (NOMA) network security, and specifically relates to a non-orthogonal multiple access network assisted by an intelligent reflector by introducing artificial noise and jointly optimizing the phase of the intelligent reflector and transmitting beam Safe communication method for vector and artificial noise vector. Background technique

[0002] In recent years, with the rapid development of metamaterials and microelectronic systems, reconfigurable and programmable metasurfaces have emerged and been widely used. Intelligent Reflecting Surface (IRS) is a two-dimensional metasurface composed of a large number of passive and reconfigurable reflective elements, which can adjust the direction and intensity of reflected electromagnetic waves by adjusting the coefficient of reflective elements through the control circuit. Reflective surfaces can be flexibly deployed, for example, on t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More