We propose an energy-efficient network architecture that consists of ad hoc (mobile)
cognitive radios (CRs) and infrastructure wireless sensor nodes. The sensor nodes within …

Network lifetime and energy consumption are major issues in wireless sensor networks
while protection of the primary user is the most important activity in a cognitive radio network …

In cognitive radio wireless sensor networks (CRSN), the nodes act as secondary users.
Therefore, they can access a channel whenever its primary user (PU) is absent. Thus, the …

Wireless sensor networks operating in the license-free spectrum suffer from uncontrolled
interference as those spectrum bands become increasingly crowded. The emerging …

Cognitive networks (CNs) are capable of enabling dynamic spectrum allocation, and thus
constitute a promising technology for future wireless communication. Whereas, the …

Abstract Wireless Sensor Networks (WSNs) have gained widespread adoption across
various applications due to their capacity to collect and wirelessly transmit data. Cognitive …

Cognitive Radio (CR) promises an efficient utilization of radio spectrum resources by
enabling dynamic spectrum access to overcome the spectrum scarcity problem. Cognitive …

Spectrum sensing is an integral part of medium access control (MAC) in cognitive radio (CR)
networks as its reliability determines the success of transmission. However, it is an energy …

Uneven clustering is an effective solution to solve the energy hole problem in multihop
cognitive radio sensor networks (CRSNs). However, current literature leaves control …

In this paper, we design a power efficient wireless cognitive sensor network that uses battery
power efficiently and is critical for maximizing sensor networks. Numerous cognitive radio …