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A Wireless Relay Transmission System Based on Physical Layer Security

A wireless and relay node technology, applied in the field of physical layer security of wireless communication, can solve the problems of not considering the channel capacity from the source node to the relay node, not considering the cooperation of multiple eavesdroppers to eavesdrop on signals, etc.

Active Publication Date: 2019-02-22
许昌泛网信通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing schemes only consider the channel capacity between the relay node and the destination node when a single eavesdropping node exists, and do not consider the channel capacity between the source node and the relay node.
At the same time, the existing solutions do not take into account that multiple eavesdroppers cooperate with each other to eavesdrop on signals in actual scenarios.

Method used

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  • A Wireless Relay Transmission System Based on Physical Layer Security

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0016] Such as figure 1 The present invention shown includes a source sending module 1, a relay transmission module 2, an eavesdropping module 3 and a terminal receiving module 4, and the implementation includes steps as follows:

[0017] 1. Source sending module 1 sends signal x, the sending power of x is P, and the sending rate of x is R d ;

[0018] During the specific implementation process, the relay transmission module 2 , the eavesdropping module 3 and the terminal receiving module 4 can all receive the signal sent by the source sending module 1 .

[0019] 2. The relay transmission module 2 receives the signal sent by the source sending module 1 and forwards it to the terminal receiving module 4. Now it will be explained in the way of decoding and forwarding:

[0020] (1), use C si Indicates the link channel capacity from the source to the i-th relay node, and calculates the link channel capacity C from the source to all relay nodes in the network si , i=1,2,...,N, ...

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Abstract

A wireless relay transmission system based on physical layer security, which belongs to the field of physical layer security of wireless communication, and specifically relates to effectively preventing eavesdropping to ensure the reliability and reliability of data transmission in the scenario where there are multiple eavesdroppers in the wireless communication system. effectiveness. The optimal relay transmission system includes a source sending module, a relay transmission module, an eavesdropping module and a terminal receiving module. The relay transmission module jointly considers the source to relay link channel conditions and the relay to terminal link channel conditions when selecting the best relay; the eavesdropping module contains a plurality of eavesdroppers who cooperate with each other to eavesdrop on signals; the The terminal receiving module uses diversity receiving technology to combine the received source signal and the received relay signal to achieve safe and reliable transmission from the source end to the destination end.

Description

technical field [0001] The invention belongs to the field of physical layer security of wireless communication, in particular to a wireless relay transmission system based on physical layer security. Background technique [0002] Wireless security has received extensive attention in recent years. In existing wireless communication systems, encryption techniques are generally used to prevent eavesdroppers from intercepting information from legitimate users. Although encryption technology can increase the security of information transmission, it requires more processing resources for encryption and decryption. Secondly, additional redundancy introduced by encryption technology will increase the overhead of the system. Based on the above-mentioned problems, the use of random characteristics of wireless physical channels to prevent eavesdropping attacks has received extensive attention. [0003] In the existing scheme, considering the existence of a single eavesdropping node,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04W12/00H04W40/22H04W12/126
CPCH04L63/14H04W12/00H04W40/22
Inventor 李美玲曲韵李丽君董增寿王钢飞贺文丽
Owner 许昌泛网信通科技有限公司