In non-orthogonal multiple access (NOMA) systems, serving multiple users in shared
resource blocks can allow untrusted users to overhear the messages of other users. In this …

A key feature of the non-orthogonal multiple access (NOMA) technique is that users with
better channel conditions have prior information about the messages of other users. The …

A key feature of the non-orthogonal multiple access (NOMA) technique is that users with
better channel conditions have prior knowledge about the information of other weak users …

Due to the successive interference cancellation (SIC) technique, Non orthogonal multiple
Access (NOMA) users have the capability of decoding the other paired users sharing the …

We study secure communications with an untrusted relay for a cooperative non-orthogonal
multiple access (NOMA) system, where a base station (BS) serves a near user (NU) and a …

In 5G and beyond wireless communication net-works, non-orthogonal multiple access
(NOMA) and Full-Duplex (FD) techniques are considered as promising key techniques …

The application of successive interference cancellation (SIC) introduces critical security risks
to cooperative non-orthogonal multiple access (NOMA) systems in the presence of …

Non-orthogonal multiple access (NOMA) is an important technology for the forthcoming 5G
and beyond. However, its privacy often suffers from adversarial eavesdropping, especially …

In this paper, we investigate the secrecy performance of an Amplify-and-Forward (AF) relay
in a cooperative NOMA system. The AF relay ensures the transmission of the signal in the …

We have proposed and analyzed secrecy performance of a network architecture which
contains a source, two destinations, a friendly jammer (FJ) and an eavesdropper (Eve). To …