Main design objectives of future wireless networks are information security and efficient
spectrum-and-energy utilization to serve a tremendous number of users and applications …

Energy scavenging overlay networks with artificial noise (ESONwAN) integrate three
emerging (energy harvesting, cognitive radio, physical layer security) technologies to boost …

In cognitive radio networks, direct communications between a primary sender–recipient pair
may be blocked due to uncertainties such as deep fading. Therefore, this paper studies …

Relay and friendly interference collaboration are effective technologies within the physical-
layer security (PLS) domain for countering eavesdroppers in wireless transmissions …

Abstract EHONs (Energy Harvesting Overlay Networks) satisfy stringent design
requirements such as high energy-and-spectrum utilization efficiencies. However, due to …

In this paper, the secrecy outage performance of a three-node amplify-and-forward relay
network with an untrustworthy relay is investigated. To enable a secure transmission, we …

In this paper, we address the challenge of establishing secure communication within a
symbiotic radio (SR) network. This network comprises a primary transmitter (PT), a primary …

Overlay mechanism offers secondary users (SUs) chances to access licensed spectrum of
primary users (PUs) to improve spectrum utilization efficiency. However, these chances …

Wireless backhaul is an economical and flexible alternative to wired backhaul, however, it
experiences impairments. This research proposes a new secure heterogeneous system …

Overlay networks allow the unlicensed transmitter (UT) to aid the licensed transmitter (LT) by
sending the superimposed signal including messages of both UT and LT with a higher …