Non-Orthogonal Multiple Access and Artificial-Noise Aided Secure Transmission in FD Relay Networks

Date

2017

Authors

Feng, Youhong
Yang, Zhen
Yan, Shihao

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

In this paper, we investigate an artificial-noise (AN) aided secure transmission for non-orthogonal multiple access (NOMA) full-duplex (FD) relay network. We propose a novel joint NOMA and AN-aided full-duplex relay (NOMA-ANFDR) scheme to enhance the physical security. In this scheme, the optimal power allocation between the information and the AN signal is determined such that the capacity of the two end-to-end (i.e., two source-relay-destination pairs) channel are maximized to ensure the highest quality of cooperative transmission. To fully examine the benefits of the NOMA-ANFDR scheme, we derive a new closed-form expression for the secrecy outage probability. We show that the NOMA-ANFDR scheme significantly outperforms the joint NOMA and AN in half-duplex relay (NOMA-ANHDR) scheme as well as the NOMA-HDR scheme in terms of minimum secrecy outage probability and effect secrecy throughout. This result indicates that adopting the joint of FD and AN technique at relays can effectively enhance the physical layer secrecy performance in the NOMA cooperative network.

Description

Keywords

Citation

Source

Type

Conference paper

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1109/GLOCOMW.2017.8269229

Restricted until