Secrecy outage analysis with K th best relay selection in dual-hop inter-vehicle communication systems

2017 ◽  
Vol 71 ◽  
pp. 139-144 ◽  
Author(s):  
Jiliang Zhang ◽  
Gaofeng Pan
Keyword(s):  
Communication Systems ◽  
Relay Selection ◽  
Vehicle Communication ◽  
Best Relay Selection ◽  
Secrecy Outage ◽  
Outage Analysis

scholarly journals Secrecy Outage Analysis for Cooperative NOMA Systems With Relay Selection Schemes

2019 ◽  
Vol 67 (9) ◽  
pp. 6282-6298 ◽  
Author(s):  
Hongjiang Lei ◽  
Zixuan Yang ◽  
Ki-Hong Park ◽  
Imran Shafique Ansari ◽  
Yongcai Guo ◽  
...  
Keyword(s):  
Relay Selection ◽  
Secrecy Outage ◽  
Outage Analysis

scholarly journals Secrecy Performance of Underlay Cooperative Cognitive Network Using Non-Orthogonal Multiple Access with Opportunistic Relay Selection

Symmetry ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 385 ◽  
Author(s):  
Tan-Phuoc Huynh ◽  
Pham Ngoc Son ◽  
Miroslav Voznak
Keyword(s):  
Fading Channels ◽  
Relay Selection ◽  
Multiple Access ◽  
Source Node ◽  
Secrecy Outage Probability ◽  
Decode And Forward ◽  
Cognitive Network ◽  
Best Relay Selection ◽  
Secrecy Outage ◽  
Outage Probabilities

In this paper, an underlay cooperative cognitive network using a non-orthogonal multiple access (UCCN-NOMA) system is investigated, in which the intermediate multiple relays help to decode and forward two signals x 1 and x 2 from a source node to two users D1 and D2, respectively, under wiretapping of an eavesdropper (E). We study the best relay selection strategies by three types of relay selection criteria: the first and second best relay selection is based on the maximum channel gain of the links R i -D 1 , R i -D2, respectively; the third one is to ensure a minimum value of the channel gains from the R i -E link. We analyze and evaluate the secrecy performances of the transmissions x 1 and x 2 from the source node to the destination nodes D1, D2, respectively, in the proposed UCCN-NOMA system in terms of the secrecy outage probabilities (SOPs) over Rayleigh fading channels. Simulation and analysis results are presented as follows. The results of the (sum) secrecy outage probability show that proposed scheme can realize the maximal diversity gain. The security of the system is very good when eavesdropper node E is far from the source and cooperative relay. Finally, the theoretical analyses are verified by performing Monte Carlo simulations.

scholarly journals Outage Analysis of Cognitive Communication System Using Opportunistic Relay Selection and Secondary Users as Relays

2021 ◽  
Author(s):  
Hojjat Javadzadeh ◽  
abdulhamid zahedi
Keyword(s):  
Outage Probability ◽  
Communication Systems ◽  
Relay Selection ◽  
Bandwidth Utilization ◽  
Decode And Forward ◽  
Secondary Users ◽  
Idle State ◽  
Primary Users ◽  
Opportunistic Relay Selection ◽  
Outage Analysis

Abstract Efficient bandwidth utilization is significant in new communication systems where secondary users can be used besides of primary users considering interference issues and idle state of primary users. Using secondary users as relays to transmit their own signals in addition to the primary signals can be applied for more reliability of the system where opportunistic relay selection can significantly enhance the performance of the system. The best-condition secondary user is selected as the optimum relay for retransmission of primary/secondary signal. Outage probability is analyzed in this paper based on decode and forward techniques in secondary users while the closed-form statement for outage probability is provided and verified by numerical evaluations.

scholarly journals Secrecy Outage Analysis on Underlay Cognitive Radio System With Full-Duplex Secondary User

IEEE Access ◽  
2017 ◽  
Vol 5 ◽  
pp. 25696-25705 ◽  
Author(s):  
Chao Zhang ◽  
Danyang Wang ◽  
Jia Ye ◽  
Hongjiang Lei ◽  
Jiliang Zhang ◽  
...  
Keyword(s):  
Cognitive Radio ◽  
Secondary User ◽  
Full Duplex ◽  
Radio System ◽  
Cognitive Radio System ◽  
Underlay Cognitive Radio ◽  
Secrecy Outage ◽  
Outage Analysis
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