Abstract
This article investigates the secrecy performance for an unmanned aerial vehicle (UAV)-aided nonorthogonal multiple access (NOMA) network in the context of an underlay cognitive radio. Specifically, a multiantenna secondary source (S) transmits a mixed signal incorporated with NOMA to two multiantenna secondary destinations (Di) via a UAV-enabled decode-and-forward relay in the presence of an eavesdropper (E). In addition, both a transmit antenna selection scheme at S and a maximal ratio combining protocol at Di and E are taken into account. Considering all the links undergo Nakagami-m fading with path loss, we analyze the secrecy performance in terms of secrecy outage probability for both users. Moreover, we also use Monte-Carlo simulations to verify the accuracy of those derived expressions.
| Original language | English |
|---|---|
| Pages (from-to) | 22631-22642 |
| Number of pages | 12 |
| Journal | IEEE Internet of Things Journal |
| Volume | 9 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - 15 Nov 2022 |
Keywords
- Cognitive radio (CR)
- maximal-ratio combining (MRC)
- nonorthogonal multiple access (NOMA)
- secrecy outage probability (SOP)
- transmit antenna selection (TAS)