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Confidential capacity calculation method and optimization method for dual-medium untrusted relay system

A technology of confidentiality capacity and relay system, which is applied in the field of calculation method and optimization of confidentiality capacity, and can solve problems such as solving formulas containing channel variable parameters

Active Publication Date: 2019-12-13
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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Problems solved by technology

However, the patented technical solution only provides the instantaneous secrecy capacity of the kth legal receiver, and does not further solve the formula containing channel variable parameters

Method used

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  • Confidential capacity calculation method and optimization method for dual-medium untrusted relay system
  • Confidential capacity calculation method and optimization method for dual-medium untrusted relay system
  • Confidential capacity calculation method and optimization method for dual-medium untrusted relay system

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no. 1 example

[0066] This embodiment provides a method for calculating the confidentiality capacity of a dual-media untrusted relay system. figure 1 Shown is a schematic structural diagram of the dual-media untrusted relay communication system described in this embodiment. like figure 1As shown, the dual-media untrusted relay system described in this embodiment, the dual-media is wireless / power line hybrid, the source (S) communicates with the terminal (D) through the untrusted relay (R), and the communication between S and D The direct link can be used to transmit information. Each node in the system is equipped with an antenna and works in half-duplex mode; using time-division multiple access technology, the transmission is divided into the broadcast phase of the first time slot and the relay of the second time slot In the amplification fronthaul (AF) stage, all transmission channels are affected by multiplicative fading and additive noise. Preferably, this embodiment adopts the wireles...

no. 2 example

[0161] This embodiment provides a method for optimizing the confidentiality capacity of a dual-media untrusted relay system. The optimization method in this embodiment is based on the secret capacity calculation method in the first embodiment, and the above calculation conditions for the secret capacity calculation method in the first embodiment are also applicable to this embodiment. figure 1 Shown is a schematic structural diagram of the dual-media untrusted relay system described in this embodiment. Such as figure 1 As shown, the dual-media untrusted relay system described in this embodiment, the dual-media is wireless / power line hybrid, the source (S) communicates with the terminal (D) through the untrusted relay (R), and the communication between S and D The direct link can be used to transmit information. Each node in the system is equipped with an antenna and works in half-duplex mode; using time-division multiple access technology, the transmission is divided into the...

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Abstract

The invention provides a confidential capacity calculation method and an optimization method of a dual-medium untrusted relay system, which are used for solving the problems of average confidential capacity calculation and safety performance optimization of a series-parallel hybrid fading system with a variable gain untrusted relay. According to the confidential capacity calculation method, communication is established between an information source S, an untrusted relay R and a terminal D, the S sends useful information and interference signals in a broadcasting stage to act on the R and the Drespectively, the D can eliminate the interference signals, and the average confidential capacity of the system is calculated by taking the model; according to the optimization method, system resources among the transmitting power, the artificial noise power and the untrusted relay power are optimally distributed by solving a nonlinear multivariate function, and the system safety and reliabilityperformance are balanced. According to the method, a mathematical model is established to optimize and allocate system power resources while an average confidential capacity calculation formula is derived, so that the reliability of the relay network is improved, and meanwhile, the security confidential performance is optimized.

Description

technical field [0001] The invention belongs to the field of network security, and in particular relates to a method for calculating a secret capacity of a dual-media untrusted relay system and an optimization method. Background technique [0002] With the Internet of Things, Smart Grid, Industry 4.0, and Smart Cities forming large-scale network connections, the network has become an essential part of people's lives. Power line communication (PLC) and wireless communication systems are two ways to realize SG and IoT. A PLC or wireless device working alone cannot meet all communication needs. In recent years, in order to improve the reliability and coverage of indoor and outdoor communication infrastructure, different communication media have been used together. For example, the combination of powerline, wireless, and visible light media; the combination of powerline and wireless communication media is called hybrid PLC / wireless. However, due to the broadcast characteristi...

Claims

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Application Information

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IPC IPC(8): H04W52/26H04W52/34H04W52/42H04W52/46H04W72/04H04W72/08H04B3/54
CPCH04W52/267H04W52/346H04W52/46H04W52/42H04W72/0473H04B3/54H04W72/542
Inventor 陈智雄叶聪苑津莎
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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