Cognitive radio has been proposed as a promising technology to resolve the spectrum
scarcity problem by dynamically exploiting underutilized spectrum bands. Cognitive radio …

Cognitive radio networks (CRNs) have emerged as an essential technology to enable
dynamic and opportunistic spectrum access which aims to exploit underutilized licensed …

In the present contribution, we propose a novel opportunistic ambient backscatter
communication (ABC) framework for radio frequency (RF)-powered cognitive radio (CR) …

Mobile network operators can expand their capacity by aggregating their licensed spectrum
with the spectrum discovered opportunistically, ie, spatiotemporally unused spectrum by …

Cooperative spectrum sensing in a multihop cognitive radio (CR) network based on multiple
antennas using an improved energy detector is studied in this paper. The improved energy …

Failure modes and effects analysis (FMEA) is a classical system safety analysis technique
which is currently widely used in the automotive, aerospace and other safety critical …

Fire alarm systems are crucial for mitigating the risks and damages associated with fires in
process industries. These systems heavily depend on the performance of fire detection …

In cluster-based cooperative cognitive radio networks (CCRNs), spectrum sensing and
decision making processes to determine whether the primary user (PU) signal is present or …

This article investigates the performance of cooperative spectrum sensing (CSS) in a
heterogeneous multihop cognitive radio (CR) system in which N secondary users (SUs) with …

Spectrum sensing data falsification (SSDF) attacks represent a major challenge for
cooperative spectrum sensing (CSS) in cognitive radio (CR) networks. In an SSDF attack, a …