Summary The Internet of Things (IoT) is a rapidly growing trend within many domains, such
as automotive, avionics, automation, energy, and health. IoT architecture is the system of …

Due to limited resources of the sensor nodes energy efficiency is an important performance
metric to evaluate the wireless sensor networks (WSN). In cluster-based WSNs, the cluster …

Cognitive radio networks (CRNs) are an emerging paradigm for next generation wireless
communication systems allowing for more efficient radio spectrum utilization. In order to …

The need for more efficient spectrum utilization is becoming more pronounced in our
increasingly digitalized society. However, this also introduces a variety of new security …

Cognitive radio networks (CRNs) offer a promising solution for improving spectrum
utilization. However, ensuring quality of service (QoS) for heterogeneous secondary users …

Cognitive radio is an emerging technology, aimed at efficient use of the scarce radio
spectrum. In cognitive radio networks (CRNs), spectrum licensed to the primary users (PUs) …

Cognitive radio networks (CRNs) rely on sensing of the licensed spectrum of a primary
network to dynamically ascertain underutilized portion of the spectrum, thus affording …

In this work, we proposed a new artificial bee colony–based spectrum handoff algorithm for
wireless cognitive radio systems. In our wireless cognitive radio system, primary users …

Cognitive radio (CR) is a hopeful technology to sort out spectrum scarcity and
underutilization problem in ad hoc networks. With the help of cognitive radio technology …

In cognitive radio networks, channel assembling allows secondary users (SUs) to expand
network capacity and improve spectrum utilization. Scheduling strategies only based on …