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A transmission method and a system of a wireless cognitive network based on physical layer security

A transmission method and cognitive relay technology, applied in the field of wireless network transmission, can solve problems such as the inability to guarantee the security of the physical layer

Active Publication Date: 2018-12-21
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Nakagami fading channel is more in line with the actual experimental data and more general than the Rayleigh fading channel, but the existing technical solutions cannot guarantee the security of the physical layer of the wireless cognitive network under the Nakagami channel fading

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  • A transmission method and a system of a wireless cognitive network based on physical layer security
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  • A transmission method and a system of a wireless cognitive network based on physical layer security

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Embodiment Construction

[0056] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0057] The purpose of the present invention is to provide a physical layer security-based wireless cognitive network transmission method and system, which can effectively improve the physical layer security performance of the wireless cognitive network based on more actual channel conditions and eavesdropping status.

[0058] In order to make the above objectives, features and advantages of the present invention more obvious and understanda...

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Abstract

The invention discloses a transmission method and a transmission system of a wireless cognitive network based on Nakagami channel fading. The invention provides a transmission method and a transmission system based on Nakagami channel fading wireless cognitive network. Firstly, the capacity of the decoded cognitive relay and the link of the destination node which can correctly decode the source signal are calculated, and the capacity of the eavesdropping channel of each decoded cognitive relay is determined according to the capacity of the decoded cognitive relay and the link of each eavesdropping node. Then the security capacity of each decoded cognitive relay is determined according to the capacity of relay channel and eavesdropping channel. Finally, the decoding cognitive relay with thelargest security capacity is selected as the optimal cognitive relay, and the source signal sent by the cognitive sending node is transmitted to the destination node through the optimal cognitive relay, so that the physical layer security performance of the wireless cognitive network is effectively improved based on more actual channel conditions and eavesdropping state.

Description

Technical field [0001] The present invention relates to the field of wireless network transmission, in particular to a transmission method and system for a wireless cognitive network compliant with Nakagami fading based on physical layer security. Background technique [0002] The existing solutions in the prior art to improve the physical layer security based on the wireless cognitive network use outage probability or intercept probability as the standard to determine whether the relay selection solution improves the physical layer security performance, but they are all based on Rayleigh fading channel non-cooperation Research on eavesdropping methods. Compared with the Rayleigh fading channel, the Nakagami fading is more in line with actual experimental data and more versatile, but the existing technical solutions cannot guarantee the security of the physical layer of the wireless cognitive network under the Nakagami channel fading. [0003] Therefore, how to provide a physical ...

Claims

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Application Information

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IPC IPC(8): H04W40/22
CPCH04W40/22
Inventor 李美玲王安红王昱昊张雄李莹杨勇何秋生
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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