Results 1 to 10 of about 438,323 (269)

Spectrum Sensing, Clustering Algorithms, and Energy-Harvesting Technology for Cognitive-Radio-Based Internet-of-Things Networks

open access: yesSensors, 2023
The aim of this systematic review was to identify the correlations between spectrum sensing, clustering algorithms, and energy-harvesting technology for cognitive-radio-based internet of things (IoT) networks in terms of deep-learning-based ...
Xavier Fernando, George Lăzăroiu
doaj   +2 more sources

Cognitive Radio Networks: Realistic or Not?

open access: yesACM SIGCOMM Computer Communication Review, 2012
A large volume of research has been conducted in the cognitive radio (CR) area the last decade. However, the deployment of a commercial CR network is yet to emerge. A large portion of the existing literature does not build on real world scenarios, hence,
ET   +10 more
core   +4 more sources

Security in Cognitive Radio Networks [PDF]

open access: yes2014 48th Annual Conference on Information Sciences and Systems (CISS), 2014
In this paper, we investigate the information-theoretic security by modeling a cognitive radio wiretap channel under quality-of-service (QoS) constraints and interference power limitations inflicted on primary users (PUs).
Akin, Sami
core   +2 more sources

Cooperative Multi-Agent Reinforcement-Learning-Based Distributed Dynamic Spectrum Access in Cognitive Radio Networks [PDF]

open access: yesIEEE Internet of Things Journal, 2021
With the development of wireless communication and Internet of Things (IoT), there are massive wireless devices that need to share the limited spectrum resources.
Xiang Tan   +7 more
semanticscholar   +1 more source

Secure and Energy Efficient Transmission for IRS-Assisted Cognitive Radio Networks [PDF]

open access: yesIEEE Transactions on Cognitive Communications and Networking, 2021
The spectrum efficiency (SE) and security of the secondary users (SUs) in the cognitive radio networks (CRNs) have become two main issues due to the limitation interference to the primary users (PUs) and the shared spectrum with the PUs.
Xuewen Wu   +5 more
semanticscholar   +1 more source

Modeling and research of the operation of cognitive radio networks [PDF]

open access: yesE3S Web of Conferences, 2023
Cognitive radio networks (CRN) have emerged as a promising technology to address the spectrum scarcity problem by allowing unlicensed users to access the licensed spectrum dynamically.
Reypnazarov Ernazar   +5 more
doaj   +1 more source

A review of spectrum sensing in modern cognitive radio networks

open access: yesTelecommunications Systems, 2023
Cognitive radio network (CRN) is a pioneering technology that was developed to improve efficiency in spectrum utilization. It provides the secondary users with the privilege to transmit on the licensed parts of the spectrum if the licensed user is not ...
M. Muzaffar, Rula Sharqi
semanticscholar   +1 more source

Fuzzy logic, genetic algorithms, and artificial neural networks applied to cognitive radio networks: A review

open access: yesInternational Journal of Distributed Sensor Networks, 2022
Cognitive radios are expected to play an important role in capturing the constantly growing traffic interest on remote networks. To improve the usage of the radio range, a cognitive radio hub detects the weather, evaluates the open-air qualities, and ...
Ahmed Alkhayyat   +6 more
doaj   +1 more source

Cognitive Radio Networks [PDF]

open access: yesIEEE Signal Processing Magazine, 2008
In recent years, the development of intelligent, adaptive wireless devices called cognitive radios, together with the introduction of secondary spectrum licensing, has led to a new paradigm in communications: cognitive networks. Cognitive networks are wireless networks that consist of several types of users: often a primary user (the primary license ...
Natasha Devroye, Mai Vu, Vahid Tarokh
openaire   +2 more sources

Energy-efficient distributed heterogeneous clustered spectrum-aware cognitive radio sensor network for guaranteed quality of service in smart grid

open access: yesInternational Journal of Distributed Sensor Networks, 2021
The development of a modern electric power grid has triggered the need for large-scale monitoring and communication in smart grids for efficient grid automation.
Emmanuel Ogbodo   +2 more
doaj   +1 more source

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