Cognitive radio (CR) is the enabling technology for supporting dynamic spectrum access:
the policy that addresses the spectrum scarcity problem that is encountered in many …

Spectrum decision is the ability of a cognitive radio (CR) to select the best available
spectrum band to satisfy secondary users'(SUs') quality of service (QoS) requirements …

Cognitive radio (CR) is an effective solution to improve the spectral efficiency (SE) of
wireless communications by allowing the secondary users (SUs) to share spectrum with …

This paper investigates the physical layer security of a satellite network, whose downlink
spectral resource is shared with a terrestrial cellular network. We propose to employ a multi …

Widely regarded as one of the most promising emerging technologies for driving the future
development of wireless communications, cognitive radio has the potential to mitigate the …

This paper investigates the performance of a cognitive hybrid satellite-terrestrial network,
where the primary satellite communication network and the secondary terrestrial mobile …

Traditional spectrum allocation policies may result in temporarily unused radio spectrum.
Cognitive radio (CR) has emerged as a promising technology to exploit the radio spectrum …

The impact of imperfect channel state information (CSI) on a reconfigurable intelligent
surface (RIS)-aided wireless system is investigated in this letter. More specifically …

In this paper, an energy harvesting dual-hop relaying system without/with the presence of co-
channel interference (CCI) is investigated. Specifically, the energy constrained multi …

This letter investigates the performance of the satellite-terrestrial networks (STN), where a
satellite tries to transmit information to a ground user through the help of multiple decode …