Wired and Wireless Physical Layer Security Issues

2001 ◽  
Vol 10 (2) ◽  
pp. 1-9
Author(s):  
James Trulove
Keyword(s):  
Physical Layer Security ◽  
Physical Layer ◽  
Security Issues

scholarly journals Physical Layer Protection Against Sensor Eavesdropper Channels in Wireless Sensor Networks

2021 ◽  
Vol 3 (2) ◽  
pp. 59-67
Author(s):  
Abul Bashar ◽  
Smys S
Keyword(s):  
Physical Layer Security ◽  
Physical Layer ◽  
Network Size ◽  
Cumulative Distribution ◽  
Wireless Sensor ◽  
Security Framework ◽  
Analytical Methodology ◽  
Security Issues ◽  
Analytical Expressions ◽  
Wsn Security

This paper presents an analysis of Wireless Sensor Network (WSN) security issues that take place due to eavesdropping. The sensor-eavesdropper channels and the sensor sinks are exposed to generalized K-fading. Based on the physical layer security framework we use cumulative distribution, optimal sensors and round robin scheduling scheme to decrease the probability of interception and to equip secure connection between the nodes. For identifying the interception probability, a novel analytical methodology is present with simple analytical expressions. Moreover, diversity orders of scheduling schemes and asymptotic closed-form expressions are evaluated. Numerical results show the crucial result of shadowing and fading parameters of wiretap and main links, selected schemes on WSN security and network size. We have analyzed the output using Monte Carlo simulation and conclusions show the validation of the proposed work.

scholarly journals On the Physical Layer Security Characteristics for MIMO-SVD Techniques for SC-FDE Schemes

Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4757 ◽  
Author(s):  
João Madeira ◽  
João Guerreiro ◽  
Rui Dinis ◽  
Paulo Montezuma ◽  
Luís Miguel Campos
Keyword(s):  
Physical Layer Security ◽  
Communication Systems ◽  
Physical Layer ◽  
Wireless Communication Systems ◽  
Secure Communications ◽  
Secrecy Rate ◽  
Security Issues ◽  
Single Carrier ◽  
Efficient Option ◽  
Value Decomposition

Multi-Input, Multi-Output (MIMO) techniques are seeing widespread usage in wireless communication systems due to their large capacity gains. On the other hand, security is a concern of any wireless system, which can make schemes that implement physical layer security key in assuring secure communications. In this paper, we study the physical layer security issues of MIMO with Singular Value Decomposition (SVD) schemes, employed along with Single-Carrier with Frequency-Domain Equalization (SC-FDE) techniques. More concretely. the security potential against an unintended eavesdropper is analysed, and it is shown that the higher the distance between the eavesdropper and the transmitter or receiver, the higher the secrecy rate. In addition, in a scenario where there is Line of Sight (LOS) between all users, it is shown that the secrecy rate can be even higher than in the previous scenario. Therefore, MIMO-SVD schemes combined with SC-FDE can be an efficient option for highly secure MIMO communications.

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.

Physical layer security issues in interference- alignment-based wireless networks

2016 ◽  
Vol 54 (8) ◽  
pp. 162-168 ◽  
Author(s):  
Nan Zhao ◽  
F. Richard Yu ◽  
Ming Li ◽  
Qiao Yan ◽  
Victor C. M. Leung
Keyword(s):  
Wireless Networks ◽  
Physical Layer Security ◽  
Interference Alignment ◽  
Physical Layer ◽  
Security Issues

scholarly journals A Physical Layer Security Technique for NOMA Systems with MIMO SC-FDE Schemes

Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 240
Author(s):  
João Madeira ◽  
João Guerreiro ◽  
Hugo Serra ◽  
Rui Dinis ◽  
Paulo Montezuma ◽  
...  
Keyword(s):  
Physical Layer Security ◽  
Communication Systems ◽  
Multiple Access ◽  
Mimo Systems ◽  
Mimo System ◽  
Physical Layer ◽  
Hardware Complexity ◽  
Secrecy Rate ◽  
Security Issues ◽  
Single Carrier

Current wireless communication systems employ Multi-Input, Multi-Output (MIMO) techniques to increase spectral efficiency, at the cost of higher hardware complexity. Most of these systems continue to employ traditional Orthogonal Multiple Access (OMA) schemes, which are suboptimal when compared to Non-Orthogonal Multiple Access (NOMA) schemes. By combining NOMA with MIMO, it is possible to achieve higher spectral efficiencies. However, security in NOMA-MIMO systems remains a problem. In this paper, we study the physical layer security issues of a power based NOMA-MIMO system with a Singular Value Decomposition (SVD) scheme, employed along with Single Carrier with Frequency Domain Equalization (SC-FDE) techniques. We consider a scenario where there is an unintended eavesdropper attempting to listen to the messages being exchanged. It is shown that the higher the channel estimate correlation between transmitter and receiver, the higher the secrecy rate, particularly for a scenario where there is a Line-Of-Sight (LOS) between all users. Therefore, power based NOMA MIMO-SVD schemes, combined with SC-FDE, can be considered efficient options for highly secure MIMO communications.

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