In this paper, we investigate the physical layer security of a two-user multiple-input-multiple-
output (MIMO) non-orthogonal multiple access (NOMA) with transmit antenna selection …

In this paper, we consider a non-orthogonal multiple access (NOMA) based mixed free
space optical–radio frequency (FSO-RF) system with imperfect channel state information …

In this paper, we study uplink-downlink non-orthogonal multiple access (NOMA) systems by
considering the secure performance at the physical layer. In the considered system model …

In this paper, we consider the physical layer security of a downlink non-orthogonal multiple
access (NOMA) system, in which users' quality of service (QoS) requirements are …

In this paper, we consider the physical layer security of a downlink cooperative multiple-
input single-output (MISO) non-orthogonal multiple access (NOMA) network over Nakagami …

We study the secrecy transmission of uplink non-orthogonal multiple access (NOMA) with
single antenna and multi-antenna users in presence of an eavesdropper. Two phases are …

We study the secrecy transmission of uplink non-orthogonal multiple access (NOMA) with
single antenna and multi-antenna users in presence of an eavesdropper. Two phases are …

Non-orthogonal multiple access (NOMA) systems have indicated that they can provide
higher spectral efficiency and secrecy capability compared with orthogonal multiple access …

In this paper, we investigate the physical-layer security performance for a reconfigurable
intelligent surface (RIS) assisted free-space optical (FSO) communication-radio frequency …

In this paper, the secrecy performance from the perspective of secrecy outage probability
(SOP) for a free space optical-radio frequency (FSO-RF) network with an amplify-and …