Secure transmission method and system for uplink non-orthogonal multiple access

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

Active Publication Date: 2020-11-24
NAT UNIV OF DEFENSE TECH
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  • Abstract
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  • 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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  • Secure transmission method and system for uplink non-orthogonal multiple access

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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 with 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 p...

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Abstract

The invention belongs to the technical field of wireless communication, and discloses a secure transmission method and a system for uplink non-orthogonal multiple access. According to the method, thesituation that the eavesdropper exists in the uplink NOMA link is considered, the receiving quality of the eavesdropper is deteriorated by selecting the friendly energy collection jammer in the network to send the artificial noise, and therefore safe communication from the NOMA user to the base station is guaranteed. According to the condition of channel state information obtained by a network, three energy collection jammer selection strategies are correspondingly provided, and the three energy collection jammer selection strategies are respectively a random energy collection jammer selection(REJS) strategy, a maximum energy collection jammer selection (MEJS) strategy and an optimal energy collection jammer selection (OEJS) strategy. Compared with a traditional uplink NOMA transmission method without assistance of an energy harvesting jammer, the method has the advantage that the physical layer safety performance of the NOMA system can be remarkably improved.

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 Applications(China)
IPC IPC(8): H04W12/12H04K3/00
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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