In this paper, we demonstrate that despite the power constraints on all transmit nodes
caused by the interference temperature limit (ITL) imposed by the primary user, power …

In this paper, the physical layer security of underlay cognitive decode-and-forward (DF) relay
networks is investigated, wherein one secondary transmitter (ST) exchanges confidential …

In this paper, we analyze sum throughput and (asymptotic) sum ergodic rate performance of
two co-existing downlink multiuser underlay secondary networks employing either fixed-rate …

This work considers a cognitive radio (CR) network consisting of a set of CR transmit-receive
node pairs, one fusion center (FC), multiple primary user emulation attack (PUEA) nodes, an …

This paper proposes a jamming technique which employs a self-powered secondary
jammer to interfere a wire-tapper, who eavesdrops communications between a self-powered …

When direct source‐destination communications are in outage, relay selection is a
preferable solution to improve reliability for this communications. However, such a relay …

Cognitive radio networks (CRNs) allow coexistence of unlicensed users (UUs) and licensed
users (LUs) and hence, mutual interference between UUs and LUs is neither ignored nor …

We evaluate the effective secrecy throughput (EST) of multiple-input-multiple-output relay-
assisted free-space optical communication, where legitimate nodes (Alice, Relays, and Bob) …

In this paper, the problem of communication security in an underlay wiretap cognitive radio
network is addressed and statistically investigated. We rely on a simple dual-hop …

This paper adopts a relay among available secondary relays and exploits non-selected
relays as jammers to maintain and secure legitimate secondary source-to-destination …