scholarly journals Physical Layer Security in Nonorthogonal Multiple Access Wireless Network with Jammer Selection

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Langtao Hu ◽  
Xin Zheng ◽  
Chunsheng Chen
Keyword(s):  
Outage Probability ◽  
Wireless Network ◽  
Stochastic Geometry ◽  
Physical Layer Security ◽  
Multiple Access ◽  
Physical Layer ◽  
Numerical Results ◽  
Selection Scheme ◽  
Good Balance ◽  
Traditional Scheme

The physical layer security of downlink nonorthogonal multiple access (NOMA) network is analyzed. In order to improve the secrecy probability, friendly jammers are jointed in the NOMA network. Two jammer schemes are proposed in the NOMA network. All the jammers transmit jamming signal without jammer selection in the first scheme (NO JS scheme). Jammers are selected to transmit jamming signal if their interfering power on scheduled users is below a threshold in the second scheme (JS scheme). A stochastic geometry approach is applied to analyze the outage probability and the secrecy probability. Compared with the NO JS scheme and traditional scheme (without jointing jammers), the jammer selection scheme provides a good balance between the user outage probability and secrecy probability. Numerical results demonstrate that the security performance of the two proposed schemes can be improved by jointing the jammers in the NOMA wireless network.

scholarly journals On the Performance of Security-Based Nonorthogonal Multiple Access in Coordinated Multipoint Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Yue Tian ◽  
Xianling Wang ◽  
Zhanwei Wang
Keyword(s):  
Outage Probability ◽  
Physical Layer Security ◽  
Multiple Access ◽  
Physical Layer ◽  
Secrecy Outage Probability ◽  
Coordinated Multipoint ◽  
Security Issues ◽  
Sum Rate ◽  
Secrecy Outage

The conventional nonorthogonal multiple access (NOMA) strategy has secrecy challenge in coordinated multipoint (CoMP) networks. Under the secrecy considerations, this paper focuses on the security-based NOMA system, which aims to improve the physical layer security issues of conventional NOMA in the coordinated multipoint (NOMA-CoMP) networks. The secrecy performance of S-NOMA in CoMP, that is, the secrecy sum-rate and the secrecy outage probability, is analysed. In contrast to the conventional NOMA (C-NOMA), the results show that the proposed S-NOMA outperforms C-NOMA in terms of the secrecy outage probability and security-based effective sum-rate.

scholarly journals Enhancing the Physical Layer Security of Non-Orthogonal Multiple Access in Large-Scale Networks

2017 ◽  
Vol 16 (3) ◽  
pp. 1656-1672 ◽  
Author(s):  
Yuanwei Liu ◽  
Zhijin Qin ◽  
Maged Elkashlan ◽  
Yue Gao ◽  
Lajos Hanzo
Keyword(s):  
Physical Layer Security ◽  
Multiple Access ◽  
Large Scale ◽  
Physical Layer ◽  
Large Scale Networks
Sign in / Sign up

Export Citation Format

Share Document