Name
Title | ||
|---|---|---|
Cooperative Non-Orthogonal Relaying For Security Enhancement In Untrusted Relay Networks |
Abstract | ||
|---|---|---|
Recently, there has been a surge of increased interest in using physical layer security to safeguard the fifth generation (5G) mobile networks. In this paper, we study the problem of secure communications in untrusted relay networks. A new non-orthogonal relaying protocol is proposed, aiming at maximizing the secrecy rate. Specifically, we allow the source and relay to transmit signals simultaneously over non-orthogonal channels, and apply successive interference cancellation at the destination to separate the multiplexed signals. We also propose two transmit antenna selection schemes to further improve security. To evaluate the secrecy performance, closed-form expressions for ergodic secrecy rate (ESR) and ESR scaling law are derived. The results show that the proposed non-orthogonal relaying protocol yields a considerable ESR improvement than conventional orthogonal relaying, despite the presence of co-channel interference. It is also revealed that the ESR scales with the average signal-to-noise ratio (gamma) over bar. and the number of available transmit antennas N-t according to log(root(gamma) over bar log N-t), thus achieving superior secrecy performance in the untrusted relay networks. |
Year | Venue | Field |
|---|---|---|
2017 | 2017 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) | Wireless,Computer science,Single antenna interference cancellation,Secrecy,Computer network,Communication channel,Physical layer,Interference (wave propagation),Multiplexing,Relay |
DocType | ISSN | Citations |
Conference | 1550-3607 | 1 |
PageRank | References | Authors |
0.35 | 13 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Lu Lv | 1 | 13 | 3.24 |
| Qiang Ni | 2 | 259 | 27.49 |
| Zhiguo Ding | 3 | 7031 | 399.47 |
| Jian Chen | 4 | 120 | 14.73 |