Results 11 to 20 of about 4,155 (271)

Energy-Efficient Cognitive Radio Sensor Networks: Parametric and Convex Transformations [PDF]

open access: yesSensors, 2013
Designing energy-efficient cognitive radio sensor networks is important to intelligently use battery energy and to maximize the sensor network life. In this paper, the problem of determining the power allocation that maximizes the energy-efficiency of ...
Alagan Anpalagan   +4 more
doaj   +4 more sources

Outage Probability Minimization for Energy Harvesting Cognitive Radio Sensor Networks [PDF]

open access: yesSensors, 2017
The incorporation of cognitive radio (CR) capability in wireless sensor networks yields a promising network paradigm known as CR sensor networks (CRSNs), which is able to provide spectrum efficient data communication.
Fan Zhang   +3 more
doaj   +4 more sources

A Novel Dynamic Spectrum Access Framework Based on Reinforcement Learning for Cognitive Radio Sensor Networks [PDF]

open access: yesSensors, 2016
Cognitive radio sensor networks are one of the kinds of application where cognitive techniques can be adopted and have many potential applications, challenges and future research trends.
Yun Lin   +3 more
doaj   +4 more sources

A Survey on Node Clustering in Cognitive Radio Wireless Sensor Networks [PDF]

open access: yesSensors, 2016
Cognitive radio wireless sensor networks (CR-WSNs) have attracted a great deal of attention recently due to the emerging spectrum scarcity issue. This work attempts to provide a detailed analysis of the role of node clustering in CR-WSNs.
Gyanendra Prasad Joshi, Sung Won Kim
doaj   +4 more sources

A Review of Cognitive Hybrid Radio Frequency/Visible Light Communication Systems for Wireless Sensor Networks [PDF]

open access: yesSensors, 2023
The development and growth of Wireless Sensor Networks (WSNs) is significantly propelled by advances in Radio Frequency (RF) and Visible Light Communication (VLC) technologies.
Rodrigo Fuchs Miranda   +6 more
doaj   +3 more sources

Delay optimal opportunistic pipeline routing scheme for cognitive radio sensor networks

open access: yesInternational Journal of Distributed Sensor Networks, 2018
In order to solve the problem of spectrum scarcity in wireless sensor networks, cognitive radio technology can be introduced into wireless sensor networks, giving rising to cognitive radio sensor networks.
Anfeng Liu, Wei Chen, Xiao Liu
doaj   +2 more sources

Reciprocally-Benefited Secure Transmission for Spectrum Sensing-Based Cognitive Radio Sensor Networks [PDF]

open access: yesSensors, 2016
The rapid proliferation of independently-designed and -deployed wireless sensor networks extremely crowds the wireless spectrum and promotes the emergence of cognitive radio sensor networks (CRSN).
Dawei Wang   +4 more
doaj   +2 more sources

Opportunistic Hybrid Transport Protocol (OHTP) for Cognitive Radio Ad Hoc Sensor Networks [PDF]

open access: yesSensors, 2015
The inefficient assignment of spectrum for different communications purposes, plus technology enhancements and ever-increasing usage of wireless technology is causing spectrum scarcity.
Yousaf Bin Zikria   +3 more
doaj   +2 more sources

IEEE 802.11af-enabled scalable cognitive radio sensor networks with adaptive priority management for early forest fire forewarning [PDF]

open access: yesScientific Reports
Forest fires cause severe ecological and economic damage, and their early detection is critical for effective disaster management. Conventional wireless sensor networks often fail to deliver timely alerts during emergencies due to congestion and ...
V. Abilasha, A. Karthikeyan
doaj   +2 more sources

Reliability and congestion control in cognitive radio sensor networks

open access: yesAd Hoc Networks, 2011
Communication requirements for cognitive radio sensor networks (CRSN) necessitate addressing the problems posed by dynamic spectrum access (DSA) in an inherently resource-constrained sensor networks regime. In this paper, arising challenges for reliability and congestion control due to incorporation of cognitive radio capability into sensor networks ...
A Ozan Bicen, Özgur B Akan
exaly   +5 more sources

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