Relay system power allocation method based on physical layer security

A technology of physical layer security and relay system, applied in wireless relay sensor network system, relay system data transmission power distribution field, can solve the problem of not being able to better meet the requirements of green communication, not considering the regeneration of relay nodes, etc. , to achieve the effect of improving survival time, saving resources, and reducing system energy consumption

Active Publication Date: 2017-10-03
XIDIAN UNIV +1
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Since this method does not consider the regeneration of relay nodes, and the resulting pow

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  • Relay system power allocation method based on physical layer security
  • Relay system power allocation method based on physical layer security
  • Relay system power allocation method based on physical layer security

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[0036] The technical solutions and effects of the present invention will be described in further detail below with reference to the accompanying drawings.

[0037] Reference figure 1 , The implementation steps of the present invention are as follows:

[0038] Step 1. In the point-to-point wireless relay communication system model, calculate the channel capacity C of the relay node sr .

[0039] The point-to-point wireless relay communication system model is composed of a source node, a relay node, a destination node and an eavesdropping node. The data information sent by the source is sent to the relay node through a wireless channel. The relay node uses a power split mechanism to divide the detection information of the relay node into two parts: energy absorption and information forwarding. The eavesdropping node sends information and the relay node through the source. Receive information to eavesdrop on information. Under the condition that the system interruption probability is...

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Abstract

The invention discloses a relay system power allocation method based on physical layer security for mainly solving the problems that the reproducibility of a relay node is not considered and that the power allocation method is the secondary optimal to fail to satisfy the green communication demands in the prior art. The method comprises the following steps: 1, separately calculating the channel capacity of the relay node, the channel capacity of a destination node, the channel capacity of information source information received by an eavesdropping node, and the channel capacity of the eavesdropping node; 2, calculating a system interruption probability according to the channel capacity of the relay node, the channel capacity of the destination node, the channel capacity of the information source information received by the eavesdropping node, and the channel capacity of the eavesdropping node; and 3, calculating a minimum value of the system interruption probability under the distribution ratio constraint condition of energy absorption of a detection value of the information source information of the relay node, and obtaining an optimal distribution ratio of energy absorption of the detection value of the information source information of the relay node. By adoption of the relay system power allocation method, the energy consumption can be effectively reduced, the resources are saved, and the relay system power allocation method can be applied to wireless relay sensor network system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a method for allocating data transmission power of a relay system, which can be applied to a wireless relay sensor network system. Background technique [0002] With the rapid development of wireless technology and the continuous expansion of application fields, the energy consumption of wireless relay sensor networks is also increasing significantly. Due to the large number of applications of various wireless devices, more energy consumption will be brought, so the responsibility of energy saving and emission reduction in wireless communication is heavy. Traditional wireless devices are powered by batteries. When these batteries have problems or are completely exhausted, it is very difficult to replace the batteries of wireless devices placed in the space. waste. In recent years, people have begun to consider renewable energy to power wireless communication dev...

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Application Information

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IPC IPC(8): H04W52/34H04W52/46
CPCH04W52/34H04W52/46
Inventor 刘向丽王健欢石嘉李赞司江勃万鹏武
Owner XIDIAN UNIV
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