… enhancing the PLS of a cooperative mmWave system, where a … the source acquires the
downlink channel state information (… Secure communication in a cooperative mmWave system …

… Cooperative relaying has been regarded as a powerful tool to expand communication …
over the downlink orthogonal frequency division multiple access systems with a wireless-powered …

… cooperative transmissions when the relays may themselves be eavesdroppers, ie, we may
face with the untrusted relaying scenario where the relays … issue, a new cooperative jamming …

… the secrecy performance of a cooperative wireless network comprised of a source, a destination
and an … The downlink scenario is shown where the relay operates as both assistant and …

… We consider a two-way cooperative OFDM system with untrusted relaying, as shown in …
exchange confidential information via an untrusted relay R . The two-way relay operates in a half-…

… overlapping at the relay. Consequently, an error floor is created at the untrusted relay, and
… method, which exploits the intrinsic user-cooperation mechanism to “virtualize” two identical …

… untrusted relay network, which obtains higher spectral efficiency theoretically than HD mode,
existing works always adopted cooperative jamming [11], source and relay … in the downlink. …

… cooperation with the untrusted relay nodes can achieve a higher secrecy rate than just
treating the untrusted relay … frequencydivision multiple-access downlink network. An energy-…

… cooperation period II is similar to that during cooperation … The detailed descriptions of the
operations at the untrusted relay as … cooperation period, the average transmit power of the relay …

… We propose a cooperative NOMA system for downlink communication that consists of an
untrusted user, a DF relay, and two mobile users with different channel conditions. …