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An MBM physical layer secure transmission method based on artificial noise

A technology of physical layer security and artificial noise. It is applied in transmission systems, radio transmission systems, and interference to communications. It can solve the problems that eavesdroppers cannot distinguish the transmission channel and cannot guarantee the security of transmission symbol bits.

Inactive Publication Date: 2018-12-25
XI AN JIAOTONG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

I. Yildirim of Istanbul University of Technology proposed a secure transmission method for single-antenna systems through precoding to make the eavesdroppers indistinguishable from the transmission channel. However, this method requires both the source node and the destination node to know the channel state information of the source-eavesdropping node. , and this method can only guarantee the security of the channel bits but not the security of the transmitted symbol bits

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  • An MBM physical layer secure transmission method based on artificial noise
  • An MBM physical layer secure transmission method based on artificial noise
  • An MBM physical layer secure transmission method based on artificial noise

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Embodiment Construction

[0054] The present invention is described in further detail below in conjunction with accompanying drawing:

[0055] see figure 1 and figure 2 , a kind of MBM physical layer secure transmission method based on artificial noise provided by the present invention, the method is based on a three-node network system, the system is a SISOSE system, and the source node is equipped with R m A radio frequency reflector can change the radio frequency characteristics by controlling the switch state of the radio frequency transmitter mirror to generate An independent end-to-end wireless channel, the modulation method is M-QAM modulation. The whole transmission process is as figure 1 shown.

[0056] Each transmission is divided into two time slots. Each time slot needs to select a channel for transmission. Time slot 1 transmits the real part of the signal to be sent and artificial noise, and time slot 2 transmits the imaginary part of the signal to be sent and artificial noise. At t...

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Abstract

The invention discloses an MBM physical layer safe transmission method based on artificial noise. Based on the characteristics of MBM technology, using the statistical independence of legitimate channel and eavesdropping channel, the symbols transmitted in two adjacent time slots are precoded and artificially noisy, so that the destination node can smoothly decode the information sent by the source node, and the eavesdropping node can not cancel the interference of the artificially noisy symbols and can not correctly decode the symbols, so as to achieve the purpose of preventing the eavesdropping node from stealing the information. The simulation results show that the bit error rate of the eavesdropping node is always close to 0.5, that is, the eavesdropping node can only guess the information of the source node. Compared with the existing security scheme based on MBM technology, the invention not only has less restriction on the use scene, but also can obtain more stable and effectivesecurity.

Description

technical field [0001] The invention belongs to the technical field of physical layer security of a wireless multiple-input multiple-output system, and in particular relates to an artificial noise-based MBM (media based modulation MBM) physical layer security transmission method. Background technique [0002] As one of the newly proposed antenna technologies, media based modulation (MBM) technology is expected to become the key technology of the fifth generation communication system due to its huge potential in system capacity and energy efficiency. The basic idea of ​​MBM is to artificially change the radio frequency characteristics around the transmitting antenna at the transmitter and affect the transmission environment around the transmitter antenna, thereby creating multiple possible channel states between the transmitter and receiver, and mapping different information bits To different channel states, the receiver recovers the transmitted information by detecting the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04K3/00H04L27/36H04L29/06H04B7/06H04W72/04
CPCH04B7/0626H04K3/825H04L27/36H04L63/0428H04W72/0446
Inventor 高贞贞白少壮
Owner XI AN JIAOTONG UNIV
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