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 this paper, we study a particle swarm optimization (PSO)-based power allocation scheme
for physical-layer security under downlink non-orthogonal multiple-access (NOMA) with …

A novel secrecy scenario of uplink non-orthogonal multiple access (NOMA) along with
cooperative jammer (s) to improve secrecy performance is studied in this work. We first …

To enhance the secrecy of wireless transmission, we propose a cooperative user relaying
NOMA scheme, in which the near user works in full-duplex mode by transmitting jamming …

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 …

This paper studies the impacts of antenna selection algorithms in decode‐and‐forward (DF)
cooperative nonorthogonal multiple access (NOMA) networks, where the secure information …

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 …

This paper considers the secrecy outage performance of a multiple-relay assisted non-
orthogonal multiple access (NOMA) network over Nakagami-m fading channels. Two time …

We investigate a secrecy-enhancing design for cooperative downlink and uplink non-
orthogonal multiple access (NOMA) transmissions with an untrusted relay. A source uses the …