Calculation method and optimization method of secrecy capacity of dual-media untrusted relay system

A relay system and security capacity technology, applied in the field of network security, can solve problems such as formula solution containing channel variable parameters, and achieve the effect of optimizing security and security performance and improving reliability.

Active Publication Date: 2022-05-17
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

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

Method used

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  • Calculation method and optimization method of secrecy capacity of dual-media untrusted relay system
  • Calculation method and optimization method of secrecy capacity of dual-media untrusted relay system
  • Calculation method and optimization method of secrecy capacity of dual-media 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. 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 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 wir...

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 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 ...

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Abstract

The present invention provides a method for calculating the secrecy capacity of a dual-media untrusted relay system and an optimization method to solve the problem of calculating the average secrecy capacity and security performance of a series-parallel hybrid fading system with variable gain untrusted relays optimization problem. In the confidentiality calculation method, communication is established between the source S, the untrusted relay R, and the terminal D, and S sends useful information and interference signals to act on R and D respectively during the broadcast stage, and D can eliminate the interference signals, thereby Calculate the average secrecy capacity of the system for the model; the optimization method optimizes the allocation of system resources among the transmitting power, artificial noise power and untrustworthy relay power by solving the nonlinear multivariate function, and balances the system security and reliability performance . The invention deduces the calculation formula of the average secrecy capacity, and at the same time establishes a mathematical model to optimize the allocation of system power resources, improves the reliability of the relay network, and optimizes the security and secrecy performance at the same time.

Description

technical field [0001] The invention belongs to the field of network security, and in particular relates to a secret capacity calculation method and an optimization method of a dual-media untrusted relay system. Background technique [0002] With Internet of Things, Smart Grid, Industry 4.0 and Smart City forming large-scale network connections, the network has become an essential part of people's life. 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 begun to be used in combination. For example, the combination of power line, wireless and visible light media; the combination of power line 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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Patent Type & Authority Patents(China)
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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