A secure transmission method and system for uplink non-orthogonal multiple access

A technology of non-orthogonal multiple access and secure transmission, applied in the field of wireless communication, to achieve the effect of improving the security performance of the physical layer and improving the security performance

Active Publication Date: 2022-04-22
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an uplink non-orthogonal multiple access secure transmission method and system to solve the security problems in the uplink NOMA transmission in the prior art

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Embodiment 1

[0074] On the basis of the foregoing embodiments, this embodiment discloses the following technical features:

[0075] Assuming that the parameters of the system are: M=N=5, the average channel gain between nodes is R t,κ = 1.5BPCU,R s,κ = 0.8BPCU, ρ u =10dB, α=0.4, η=0.8. The simulation has obtained the uplink non-orthogonal multiple access system under the Rayleigh channel condition, using the existing non-energy harvesting jammer transmission method (NEJS) and using the user security outage probability and security throughput of the transmission method proposed by the present invention as The change curve of the average signal-to-noise ratio, such as figure 2 , 3 , as shown in 4, where figure 2 for user U κ Simulation of security outage probability of , image 3 and Figure 4 strong user U n and weak user U m Security throughput simulation for .

[0076] From figure 2 It can be seen that, compared with the existing NEJS method, the method proposed by the pr...

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Abstract

The invention belongs to the technical field of wireless communication, and discloses an uplink non-orthogonal multiple access secure transmission method and system. The present invention considers the situation that there is an eavesdropper in the uplink NOMA link, and selects a friendly energy harvesting jammer in the network to send artificial noise to deteriorate the reception quality of the eavesdropper, thereby ensuring safe communication from the NOMA user to the base station. According to the channel state information obtained by the network, three energy harvesting jammer selection strategies are correspondingly provided, namely random energy harvesting jammer selection (REJS), maximum energy harvesting jammer selection (MEJS), and optimal energy harvesting jammer selection. Selector Selection (OEJS) strategy. Compared with the traditional uplink NOMA transmission method assisted by no energy harvesting jammer, the invention can significantly improve the physical layer security performance of the NOMA system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an uplink non-orthogonal multiple access secure transmission method and system. Background technique [0002] In order to meet the rapidly growing demand for mobile communication services under the condition of increasingly scarce spectrum resources, the non-orthogonal multiple access (Non-Orthogonal Multiple Access, NOMA) technology has attracted more and more attention from the industry. NOMA technology realizes high spectral efficiency transmission by carrying information of different users on the same frequency and time resources, and is considered to be a very promising multiple access method in the 5G and post-5G era. Among them, the power domain NOMA technology has received extensive attention due to its low implementation complexity and high compatibility. The basic idea of ​​NOMA in the power domain (hereinafter referred to as NOMA) is to use ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/122H04K3/00
CPCH04K3/825Y02D30/70
Inventor 曹堃锐丁海洋陈华梁荆锋李海鹏辛可为
Owner NAT UNIV OF DEFENSE TECH
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