scholarly journals Secure transmission in spectrum sharing MIMO channels with generalized antenna selection over Nakagami-m channels

IEEE Access ◽  
2016 ◽  
Vol 4 ◽  
pp. 4058-4065 ◽  
Author(s):  
Yuzhen Huang ◽  
Fawaz S. Al-Qahtani ◽  
Trung Q. Duong ◽  
Jinlong Wang ◽  
Chunxiao Cai
Keyword(s):  
Spectrum Sharing ◽  
Antenna Selection ◽  
Mimo Channels ◽  
M Channels ◽  
Secure Transmission

Antenna Selection Algorithms in Correlated Fading MIMO Channels

2006 ◽  
Author(s):  
M. I. As-Saafani ◽  
Sultan J. Sadi ◽  
Ehab F. Badran ◽  
Darwish A. E. Mohamed ◽  
Shawki Shaaban
Keyword(s):  
Antenna Selection ◽  
Mimo Channels ◽  
Correlated Fading ◽  
Selection Algorithms

scholarly journals On Secrecy Outage Probability for Downlink NOMA Systems With Relay-Antenna Selection

2021 ◽  
Author(s):  
Shu Xu ◽  
Chen Liu ◽  
Hong Wang ◽  
Mujun Qian ◽  
Wenfeng Sun
Keyword(s):  
Outage Probability ◽  
Multiple Access ◽  
Antenna Selection ◽  
Maximal Ratio Combining ◽  
Selection Combining ◽  
Secrecy Outage Probability ◽  
Channel State ◽  
Secrecy Outage ◽  
Secure Transmission ◽  
Theoretical Results

Abstract Secure transmission is essential for future non-orthogonal multiple access (NOMA) system. This paper investigates relay-antenna selection (RAS) to enhance physical-layer security (PLS) of cooperative NOMA system in the presence of an eavesdropper, where multiple antennas are deployed at the relays, the users, and the eavesdropper. In order to reduce expense on radio frequency (RF) chains, selection combining (SC) is employed at both the relays and the users, whilst the eavesdropper employs either maximal-ratio combining (MRC) or selection combining (SC) to process the received signals. Under the condition that the channel state information (CSI) of the eavesdropping channel is available or unavailable, two e↵ective relay-antenna selection schemes are proposed. Additionally, the closed-form expressions of secrecy outage probability (SOP) are derived for the proposed relay-antenna selection schemes. In order to gain more deep insights on the derived results, the asymptotic performance of the derived SOP is analyzed. In simulations, it is demonstrated that the theoretical results match well with the simulation results and the SOP of the proposed schemes is less than that of the conventional orthogonal multiple access (OMA) scheme obviously.

scholarly journals Impact of Antenna Selection on Physical-Layer Security of NOMA Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Dan Deng ◽  
Chao Li ◽  
Lisheng Fan ◽  
Xin Liu ◽  
Fasheng Zhou
Keyword(s):  
Secure Communication ◽  
Antenna Selection ◽  
Asymptotic Expression ◽  
Signal To Noise Ratio ◽  
Secrecy Outage Probability ◽  
Decode And Forward ◽  
Secure Information ◽  
Secrecy Outage ◽  
The Impact ◽  
Secure Transmission

This paper studies the impacts of antenna selection algorithms in decode-and-forward (DF) cooperative nonorthogonal multiple access (NOMA) networks, where the secure information from the relay can be overheard by an eavesdropper in the networks. In order to ensure the secure transmission, an optimal antenna selection algorithm is proposed to choose one best relay’s antenna to assist the secure transmission. We study the impact of antenna selection on the system secure communication through deriving the analytical expression of the secrecy outage probability along with the asymptotic expression in the high regime of signal-to-noise ratio (SNR) and main-to-eavesdropper ratio (MER). From the analytical and asymptotic expressions, we find that the system secure performance is highly dependent on the system parameters such as the number of antennas at the relay, SNR, and MER. In particular, the secrecy diversity order of the system is equal to the antenna number, when the interference from the second user is limited.

Efficient Transmit Antenna Selection for Correlated MIMO Channels

2009 ◽  
Author(s):  
Hyungsoo Kim ◽  
Hyounkuk Kim ◽  
Namshik Kim ◽  
Hyuncheol Park ◽  
Seok Seo ◽  
...  
Keyword(s):  
Antenna Selection ◽  
Mimo Channels ◽  
Transmit Antenna Selection ◽  
Selection For
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