The impact of imperfect channel state information on the performances of relay selection schemes in underlay cognitive networks

2014 ◽  
Author(s):  
Hela Chamkhia ◽  
Aymen Omri ◽  
Ridha Bouallegue
Keyword(s):  
Channel State Information ◽  
Relay Selection ◽  
Cognitive Networks ◽  
Imperfect Channel State Information ◽  
Channel State ◽  
State Information ◽  
The Impact

scholarly journals Secrecy Outage Probability of a NOMA Scheme and Impact Imperfect Channel State Information in Underlay Cooperative Cognitive Networks

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 895
Author(s):  
Tan-Phuoc Huynh ◽  
Duy-Hung Ha ◽  
Cong Truong Thanh ◽  
Peppino Fazio ◽  
Miroslav Voznak
Keyword(s):  
Fading Channels ◽  
Channel State Information ◽  
Cognitive Networks ◽  
Source Node ◽  
Secrecy Outage Probability ◽  
Imperfect Channel State Information ◽  
Channel State ◽  
State Information ◽  
Secrecy Outage ◽  
The Impact

Security performance and the impact of imperfect channel state information (CSI) in underlay cooperative cognitive networks (UCCN) is investigated in this paper. In the proposed scheme, relay R uses non-orthogonal multiple access (NOMA) technology to transfer messages e 1 , e 2 from the source node S to User 1 (U1) and User 2 (U2), respectively. An eavesdropper (E) is also proposed to wiretap the messages of U1 and U2. The transmission’s security performance in the proposed system was analyzed and performed over Rayleigh fading channels. Through numerical analysis, the results showed that the proposed system’s secrecy performance became more efficient when the eavesdropper node E was farther away from the source node S and the intermediate cooperative relay R. The secrecy performance of U1 was also compared to the secrecy performance of U2. Finally, the simulation results matched the Monte Carlo simulations well.

Sign in / Sign up

Export Citation Format

Share Document