scholarly journals Towards the Secrecy Outage Probability of Transmit-Receive Diversity Systems in the Presence of Multiantenna Eavesdroppers

2019 ◽  
Keyword(s):  
Outage Probability ◽  
Secrecy Outage Probability ◽  
Receive Diversity ◽  
Diversity Systems ◽  
Secrecy Outage

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 Secrecy Outage Probability and Fairness of Packet Transmission Time in a NOMA System

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 79637-79649
Author(s):  
Tung Pham Huu ◽  
Tam Ninh Thi-Thanh ◽  
Chi Nguyen-Yen ◽  
Hung Tran ◽  
Viet Nguyen Dinh ◽  
...  
Keyword(s):  
Outage Probability ◽  
Packet Transmission ◽  
Transmission Time ◽  
Secrecy Outage Probability ◽  
Secrecy Outage ◽  
Packet Transmission Time

scholarly journals Secrecy Outage Probability of Energy-Harvesting Cooperative NOMA Transmissions With Relay Selection

2020 ◽  
Vol 4 (4) ◽  
pp. 1130-1148
Author(s):  
Abdelhamid Salem ◽  
Leila Musavian ◽  
Eduard A. Jorswieck ◽  
Sonia Aissa
Keyword(s):  
Energy Harvesting ◽  
Outage Probability ◽  
Relay Selection ◽  
Secrecy Outage Probability ◽  
Secrecy Outage
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