Non-orthogonal multiple access (NOMA) has been developed as a key multi-access
technique for 5G. However, secure transmission remains a challenge in NOMA. Especially …

We investigate physical layer security of a downlink cooperative non-orthogonal multiple
access system with an untrusted relay. A friendly jammer (FJ) is employed in order to …

This letter investigates a jammer-aided cooperative non-orthogonal multiple access (NOMA)
system, where one relay is used to deliver information and other relays are acted as …

Differentsystemmodels utilizing nonorthogonal multiple access (NOMA) have been
successfully studied to meet the growing capacity demands of the Internet of Things IoT) …

Considering the diversified communication requirements in the Internet-of-Things (IoT)
networks, this article proposes a nonorthogonal multiple access (NOMA) scheme which …

This article clarifies pivotal security issues in the context of non-orthogonal multiple access
(NOMA) technology and presents potential methodologies to address them at the physical …

This letter focuses on exploring a new decoding order to resolve the secrecy issue among
untrusted non-orthogonal multiple access users. In this context, firstly, we identify the total …

With non-orthogonal multiple access (NOMA) in a passive eavesdropping scenario, we
tackle the maximization of the secrecy rate for the strong user subject to a maximum …

In this work, we investigate the performance of an active reconfigurable intelligent surface
(RIS)-aided uplink non-orthogonal multiple access (NOMA) network in the presence of an …

In this paper, we study secrecy simultaneous wireless information and power transfer
(SWIPT) in downlink non-orthogonal multiple access (NOMA) systems comprising a base …