Secrecy outage probability of a two-way cooperative network with an energy harvesting untrusted AF relay

2018 ◽  
Vol 6 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Shashibhushan Sharma ◽  
Anurag Kumar ◽  
Sanjay Dhar Roy ◽  
Sumit Kundu
Keyword(s):  
Energy Harvesting ◽  
Outage Probability ◽  
Secrecy Outage Probability ◽  
Cooperative Network ◽  
Af Relay ◽  
Secrecy Outage

scholarly journals Security–reliability tradeoff analysis of untrusted energy harvesting relay networks

2018 ◽  
Vol 14 (1) ◽  
pp. 155014771875472 ◽  
Author(s):  
Dechuan Chen ◽  
Weiwei Yang ◽  
Jianwei Hu ◽  
Weifeng Mou ◽  
Yueming Cai
Keyword(s):  
Energy Harvesting ◽  
Outage Probability ◽  
Relay Networks ◽  
Secrecy Outage Probability ◽  
Power Splitting ◽  
Amplify And Forward ◽  
Time Switching ◽  
Radio Frequency Signals ◽  
Secrecy Outage ◽  
Analytical Expressions

We investigate secure communications in untrusted energy harvesting relay networks, where the amplify-and-forward relay is an energy constrained node powered by the received radio frequency signals, and try to unauthorizedly decode the confidential information from the source. The secrecy outage probability and connection outage probability are respectively derived in closed-form to evaluate the security and reliability for three energy harvesting strategies, for example, time switching relaying strategy, power splitting relaying strategy, and ideal relaying receiver strategy. Subsequently, the effective secrecy throughput is conducted to characterize the overall efficiency, and the asymptotic analysis of the secrecy throughput is given to determine the optimal energy harvesting strategies in different operating regimes. Furthermore, in order to achieve the optimal effective secrecy throughput performance, a switching threshold between time switching relaying and power splitting relaying is designed. Numerical results verify the accuracy of the analytical expressions and reveal that the effective secrecy throughput of the system can be effectively promoted by the threshold switching energy harvesting strategy.

scholarly journals Jammer against eavesdropper in half-duplex energy harvesting cooperative relaying networks: secrecy outage probability analysis

2020 ◽  
Vol 11 (2) ◽  
pp. 879
Author(s):  
Phu Tran Tin ◽  
Duy-Hung Ha ◽  
Minh Tran ◽  
Tran Thanh Trang
Keyword(s):  
Energy Harvesting ◽  
Outage Probability ◽  
System Performance ◽  
Integral Form ◽  
Cooperative Relaying ◽  
Destination Node ◽  
Secrecy Outage Probability ◽  
Half Duplex ◽  
Relaying Networks ◽  
Secrecy Outage

In this paper, we have investigated the Half-Duplex (HD) Energy Harvesting (EH) Cooperative Relaying Networks with one source node, one destination node, one intermediate relay and in the presence of the Jammer Against Eavesdropper. We have analyzed the system performance in terms of the integral form expression of secrecy outage probability. In addition, we have investigated the effect of source rate, time switching factor, energy coefficient, and the ratio Ps/N0 on the system performance. Finally, all the mathematical, analytical expressions are verified by Monte Carlo simulation, and the analytical results match well with the simulation ones to convince the correctness of the analytical expression.

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.

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