Underlay Spectrum Sharing for NOMA Relaying Networks: Outage Analysis

Sultangali Arzykulov, Galymzhan Nauryzbayev, Theodoros A. Tsiftsis, Behrouz Maham, Mohammad Hashmi, Khaled Maaiuf Rabie

2020

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DOI 10.1109/icnc47757.2020.9049801
Data confidence 85 high
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Abstract

In this paper, we investigate a cognitive non-orthogonal multiple access (NOMA) network scenario by adopting an amplify-and-forward (AF) relaying method. The end-to-end outage probability (OP) for secondary users is studied. Then, we compare the OP for the NOMA and time-division multiple access techniques and demonstrate that the former one outperforms the latter. Moreover, the proposed AF protocol is compared to the detect-and-forward one. Finally, the simulation results validate the derived analytical expressions.