In this paper, cooperative jamming is employed to enhance the covert communication
performance of active reconfigurable intelligent surface (RIS)-aided non-orthogonal multiple …

Covert communications assisted by simultaneously transmitting and reflecting
reconfigurable intelligent surface (STAR-RIS) in non-orthogonal multiple access (NOMA) …

The paper exploits overt information of non-orthogonal multiple access (NOMA) systems for
camouflage to hide covert information. The optimum strategy of hiding information at the …

The combination of simultaneously transmitting and reflecting-reconfigurable intelligent
surface (STAR-RIS) and nonorthogonal multiple access (NOMA) brings the necessary full …

The main motivation behind the covert communication is hiding the very existence of a
communication between two users. In this work, we study the covert communication …

In this article, we consider an active reconfigurable intelligent surface (ARIS)-aided non-
orthogonal multiple access (NOMA) and rate-splitting (RS)-enabled communication system …

In this paper, we investigate covert communications in data collected IoT with NOMA, where
the paired sensor nodes S m and S n transmit covert messages to a legitimate receiver …

One of the main characteristics of the power-domain non-orthogonal multiple access
(NOMA) technique is the possibility of users to decode the messages of the other paired …

Recently, non-orthogonal multiple access (NOMA) has been considered as a promising
technique in 5G network, and many investigations have addressed on the physical layer …

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 …