Relay selection not only maintains but also improves the reliability of source-destination
communication when the direct communication link cannot be established because of deep …

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

Spectrum sharing (SS) and energy harvesting (EH) basically improve spectrum-and-energy
efficiencies required by modern communications systems. Nonetheless, most publications …

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 …

This paper considers an underlay relaying network where a cognitive relay performs decode-
and-forward operation to aid communication between a cognitive source-destination pair …

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 …

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

This paper incorporates interference cancellation in the outage analysis of a wireless energy
harvesting cognitive relay network. Based on an interference threshold, primary receivers …

We propose a system model for energy harvesting-based underlay relaying networks with
transmit antenna selection and jamming where a multi-antenna unlicensed relay performs …

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