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 …

In 5G wireless communication networks, Non-Orthogonal Multiple Access (NOMA) has
attracted much attention in recent years. This paper investigates physical layer security of a …

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 …

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

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 …

The secrecy outage probability (SOP) performance is investigated for a cooperative non-
orthogonal multiple access system under eavesdropping attack, where a base station …

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 …

Enabling cooperation in a NOMA system is a promising approach to improve its
performance. In this paper, we study the cooperation in a secure NOMA system, where the …

In this paper, we analyze the outage probability and secrecy capacity of a non-orthogonal
multiple access (NOMA) system in the presence of an eavesdropper. In order to enhance …

The key idea of non-orthogonal multiple access (NOMA) is to serve multiple users in the
same resource block to improve the spectral efficiency. Whereas due to the resource …