… of NOMA systems may be untrusted, NOMA systems are exposed to risks … internal
eavesdropping. Secure transmission for noncooperative NOMA systems with internal eavesdropping …

… In this paper, the focus is on internal relays, where the near … cooperative NOMA systems
with internal nodes serving as relays is investigated. Since external and internal eavesdroppers …

… Unlike [40], the authors of [41] proposed two optimal relay selection schemes to enhance
the secrecy performance of cooperative NOMA systems with untrusted users. A multiple-input …

… the current shortage of spectrum resource and enlarge the system throughput, which motivates
both academia and industry to explore diverse applications, such as cooperative NOMA […

… , in essence, it is a single user eavesdropping problem. In [9], … eavesdropping with precoding.
The authors of [11] designed a cooperative jamming scheme to optimize PLS with internal …

… rate of the NOMA users in [6]. Wu et al. proposed a cooperative jamming NOMA principle to
… , there may be eavesdroppers insides the NOMA networks, which are the communication …

… external eavesdropper, while the internal eavesdropper … internal eavesdroppers is much
critical than external ones. Therefore, securing NOMA systems against internal eavesdroppers …

… of NOMA systems mainly focused on external eavesdropping and internal FU eavesdropping.
… in the presence of a stronger NU eavesdropper with the help of a cooperative jammer and …

… of internal eavesdroppers (eg, some NOMA users may intercept information of others),
the use of NOMA is capable of combating internal eavesdropping. For example, the NOMA …

… and effective secrecy throughput (EST) of a cooperative NOMA system with multiple FD
relays in the presence of multiple non-colluding eavesdroppers over Rayleigh fading channels. …