… untrusted scenario in cooperative NOMA with trusted relay is not fully investigated despite
its importance. Considering a DF relay-… We consider downlink NOMA-based communication, …

… -to-relay and relay-to-receiver phases to prevent the warden from detecting the presence of
communications via the transmitterrelay-receiver link and untrusted relay … MISO downlinks: …

… Abstract—In this paper, the secrecy performance for a downlink cooperative non-orthogonal …
study the secrecy performance of a cooperative NOMA system with an untrusted weak user. …

… be leaked due to monitoring by the untrusted relay [19]. To … SNs to the controller and downlink
communications from the … using an untrusted relay: A case for cooperative jamming,” in …

… Downlink of a trusted DF relay R assisted secure OFDMA system, with source S, and M
untrusted … user scenario with two tapping, we first discuss rate definitions in classical co-operative …

… consists of multi-antenna BS, multiple untrusted relays, multiple IoTDs with imperfect CSI. …
multiple AF EH untrusted relays. • We investigate three cooperative TAS and relay selection …

… secure cooperative communications in untrusted relay … the far user is aided by an untrusted
relay. We propose two novel … for cooperative downlink and uplink NOMA with an untrusted …

… In cooperative networks with untrusted relays and passive eavesdroppers, in order to … In
[23], the authors investigated the physical layer security of a downlink non-orthogonal multiple …

… introduces a cooperative communication … untrusted relays, a promising direction for future
research would be to expand this framework to scenarios involving multiple untrusted relays. …

… UAV relay involved in cooperation is lower than that of legitimate users. The untrusted UAV
… In contrast to the existing traditional fixed untrusted relays, UAV untrusted relays can better …