scholarly journals Secrecy outage probability analysis of energy‐aware relay selection for energy‐harvesting cooperative systems

2021 ◽  
Author(s):  
Yujie Zhang ◽  
Peng Li ◽  
Weibei Fan ◽  
Ruchuan Wang
Keyword(s):  
Energy Harvesting ◽  
Outage Probability ◽  
Relay Selection ◽  
Cooperative Systems ◽  
Probability Analysis ◽  
Secrecy Outage Probability ◽  
Energy Aware ◽  
Selection For ◽  
Secrecy Outage

scholarly journals Partial Relay Selection for Secure Cooperative NOMA Networks

2021 ◽  
Author(s):  
Wided Hadj Alouane
Keyword(s):  
Fading Channels ◽  
Relay Selection ◽  
Signal To Noise Ratio ◽  
Secrecy Outage Probability ◽  
Amplify And Forward ◽  
Decode And Forward ◽  
Partial Relay Selection ◽  
Asymptotic Expressions ◽  
Selection For ◽  
Secrecy Outage

Abstract In this paper, we investigate physical layer security of multi-relay non-orthogonal multiple access (NOMA) networks with partial relay selection considering decode-and-forward (DF) and amplify-and-forward (AF) protocols. We propose a partial relay scheme aiming to select the best relay based on the highest signal-to-noise-ratio (SNR) of the first link. We derive new exact and asymptotic expressions for strictly positive secrecy capacity (SPSC) and secrecy outage probability (SOP) considering Rayleigh fading channels. Numerical results demonstrate that AF and DF provide almost a similar secrecy performance. Moreover, they prove that partial relay selection improves SPSC and reduces SOP when the relay-cluster is closer to the legitimate receiver.

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