Cooperative communication can improve the performance of communication system under
multi‐path fading conditions by relaying. If there is an eavesdropper in communication …

We consider a cooperative multi-path relay channel (MPRC) where multiple half-duplex
relays assist in the packet transmissions from a source to its destination. A virtual full-duplex …

In this study, the authors investigate the energy‐efficient (EE) relay selection (RS) and power
allocation (PA) in a cooperative secured system. Their scenario includes a multiple‐antenna …

Cooperative communication through relaying can improve the performance of
communication systems under multipath fading conditions. Increasing the number of relays …

In this paper, the authors deal with secure transmission in two‐hop amplify‐and‐forward
network with untrusted relays. To prevent the untrusted relays from intercepting the source …

This study discusses the secrecy rate of two‐hop relay‐assisted cooperative wiretap
channels, incorporating multi‐antenna amplify and forward relaying in the middle of …

In this paper, a novel beamforming method is proposed for a more realistic cognitive radio
system with several secondary transmitters and receivers, a number of relays, and 1 primary …

In this paper we propose a novel multiple relay selection scheme based on the log-
likelihood ratio (LLR). In this scheme, the joint design of precoding matrices at both the …

A cooperative multi-path relay channel (MPRC) with multiple decode-and-forward relay
terminals is considered in this paper. In order to enhance the system reliability, the source is …

In this paper, we consider the joint design of precoding matrices at both the source and relay
nodes in a multi-relay system based on perfect and imperfect channel information, and …