A wireless physical layer security enhancement method based on cooperative interference in public transport

A technology for physical layer security and public transportation. It is used in services, security devices, wireless communications, etc. based on specific environments.

Inactive Publication Date: 2018-12-11
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both are essentially under the interference mechanism, by minimizing the SINR of the eavesdropper to improve the security rate, but the SINR of the eavesdropper is generally smaller than the SINR of the target user, so the improvement of the security rate is not obvious

Method used

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  • A wireless physical layer security enhancement method based on cooperative interference in public transport
  • A wireless physical layer security enhancement method based on cooperative interference in public transport
  • A wireless physical layer security enhancement method based on cooperative interference in public transport

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Embodiment Construction

[0012] The wireless physical layer security enhancement method based on cooperative interference in public transportation of the present invention comprises several steps:

[0013] 1. Establish a model of a secure communication system based on cooperative jamming on public vehicles

[0014] The present invention is to solve the safety communication problem on the public vehicle, so first establish as figure 1 The model of a secure communication system based on cooperative jamming on a public vehicle is shown. The system includes a base station, a target user, an eavesdropper, a power transmitter and N cooperative nodes. Except for the base station, all other nodes are deployed in public transportation vehicles. The target users and eavesdroppers can be regarded as mobile devices carried by passengers on the vehicle. They are all located at any position on the vehicle. The mobile interference node is also a mobile device carried by passengers, and the power transmitter pre-ins...

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Abstract

The invention provides a wireless physical layer safety enhancement method based on cooperative interference in public transportation, which realizes the safety communication between users and base stations on public transportation. In order to achieve this goal, we propose an optimal scheme based on cooperative interference to obtain the best safety performance, that is, to design the best beamforming vector and interference covariance matrix to maximize the safety rate. Then, the scheme proposed by us is compared with the existing technical scheme by simulation. Simulation results show thatcompared with other schemes, our scheme has better security performance.

Description

technical field [0001] The invention relates to the technical fields of wireless communication and physical layer security. Background technique [0002] Due to the broadcast characteristics of wireless media, the communication process based on wireless channels is often easily eavesdropped by unauthorized receivers, which brings great challenges to the secure transmission of wireless communication systems. Therefore, the issue of information security is particularly important in the field of wireless communication. In addition to sensitive industries such as military, finance, and medical care that have always had a greater demand for information security, the demand for information security in the future intelligent transportation industry is also increasing. With the development of national public transportation, high-speed rail, subway and intercity trains have become people's daily travel methods, and it is very common for people to use mobile phones and other communic...

Claims

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Application Information

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IPC IPC(8): H04W4/40H04W12/02H04W24/02
CPCH04W4/40H04W12/02H04W24/02
Inventor 桂林卿鲍菲菲束锋杨梦霞施云丛海波
Owner NANJING UNIV OF SCI & TECH
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