Abstract
The physical layer transmission faces with the interference from primary users and eavesdroppers in cognitive radio networks based on non-orthogonal multiple access (CR-NOMA).In this paper, Alamouti space-time block coded (STBC) is utilized to improve the physical layer security transmission performance.The closed-form expressions for the security outage probability of all secondary users are derived.We provide extensive Monte-Carlo simulation results to corroborate the analysis.The results show that the security outage probability of stronger cognitive users is improved by the proposed STBC-NOMA-Based CR compared with the traditional NOMA-Based CR.Moreover, the security outage probability of the stronger cognitive users experiences performance enhancement with the increase of the cognitive transmission power, whilst the security outage probability of weaker cognitive users will be less impacted by the transmission power.In addition, we demonstrate that the power allocation coefficients will have different impact on the stronger cognitive users and the weaker users.
| Translated title of the contribution | On the Secrecy Performance of NOMA-Based Cognitive Radio Networks with STBC |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 463-469 |
| Number of pages | 7 |
| Journal | Tien Tzu Hsueh Pao/Acta Electronica Sinica |
| Volume | 48 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1 Mar 2020 |
Keywords
- Cognitive radio
- Eavesdropper
- Non-orthogonal multiple access
- Physical layer security
- Security outage probability
- Space time block code