… (namely an untrusted relay). Thus, to improve the secrecy performance of the considered
system, we propose an optimal scheme, namely best-sensor-best-untrusted-relay (BSBR), and …

… an untrusted user exists, we present an IoT user scheduling strategy in two stages. Specifically,
the scheduled IoT user … transmission of its own message against the untrusted far user. …

… , a thorough investigation of the performance of rate splitting is conducted in terms of outage
and secrecy outage for the simultaneous service to a near user and far user, where the latter …

… untrusted relays. To this end, we examine a three-node AF relaying network where the relay
is untrusted … Differently from previous related works, we analyze the secrecy performance in …

… to provide positive secrecy rates at all untrusted users with … to all users, secrecy performance
of the far user against the … To analyze secrecy performance, we derive expressions of …

… secrecy performance, we propose an opportunistic NU scheduling scheme to maximize the
sum secrecy … , the closed-form expressions of the average secrecy rate (ASR) are derived for …

… selected user. To reduce the information leakage, we consider two selection criteria for user
… We study the impact of the direct and relaying links on the system secrecy performance by …

… and the secrecy performance of a two-users NOMA system with an untrusted user. The …
-optimal performance of the pair under a secrecy outage probability constraint of the trusted …

… We focus on the worstcase performance, in which we maximize the average rate for the
worst channel and Warden’s location mismatch. We observe that the imperfect CSI of Carol has …

… untrusted users, we design a novel secure NOMA transmission protocol to maximize secrecy
fairness among users. … only far user as untrusted and analyzed the secrecy performance of …