Secrecy Performance of AF/DF relaying in NOMA Systems using Average and Instantaneous Channel gain for users’ ranking
Institute of Electrical and Electronics Engineers Inc.
In this paper, we consider a downlink cooperative NOMA system where both Decode and Forward (DF) and Amplify and Forward (AF) strategies are studied in the presence of a malicious eavesdropper. First, the secrecy outage probability (SOP) is studied when users' ranking is based on either instantaneous or average channel gains. Next, the strictly positive secrecy capacity (SPSC) is derived for users ranking based on average and instantaneous channel gains. Under this setup, we also investigate the improvement of the system secrecy using optimal power allocation (OPA) coefficients. Numerical and simulation results are provided and demonstrate that Instantaneous channel gain users' ranking provide better results and its further improved with the use of OPA. © 2020 IEEE.
This conference paper is not available at CUD collection. The version of scholarly record of this conference paper is published in 2020 International Symposium on Networks, Computers and Communications (ISNCC) (2020), available online at: https://doi.org/10.1109/ISNCC49221.2020.9297172
Average channel gain, Cooperative NOMA, Instantaneous channel gain, Optimal power allocation, Secrecy outage probablity, Strictly positive secrecy capacity, Information systems, Amplify-and-forward, Channel gains, Decode and forward, Secrecy outage probabilities, Computer networks
Zaghdoud, N., Mnaouer, A. B., Alouane, W. H., Boujemaa, H., & Touat, F. (2020, October). Secrecy Performance of AF/DF relaying in NOMA Systems using Average and Instantaneous Channel gain for users’ ranking. In 2020 International Symposium on Networks, Computers and Communications (ISNCC) (pp. 1-7). IEEE. https://doi.or/10.1109/ISNCC49221.2020.9297172