Results 21 to 30 of about 305,481 (299)

Cognitive radio policy-based adaptive blind rendezvous protocols for disaster response [PDF]

, 2022
In disaster scenarios, with damaged network infrastructure, cognitive radio (CR) can be used to provide temporary network access in the first few hours. Since spectrum occupancy will be unknown, the radios must rely on spectrum sensing and opportunistic ...
Sreenan, Cormac J., Ghafoor, Saim, Brown, Kenneth N.   +2 more
core   +1 more source

Sensor Clustering and Sensing Technology for Optimal Throughput of Sensor-Aided Cognitive Radio Networks Supporting Multiple Licensed Channels

International Journal of Distributed Sensor Networks, 2015
In cognitive radio networks, secondary users may not sense licensed channels efficiently due to problems of fading channel, shadowing, unfamiliar environment, and so forth.
Thanh-Tung Nguyen, Insoo Koo
doaj   +1 more source

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

IEEE 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, Li Zhou, Haijun Wang, Yuli Sun, Haitao Zhao, Boon-Chong Seet, Jibo Wei, Victor C. M. Leung   +7 more
semanticscholar   +1 more source

Optimizing cooperative cognitive radio networks with opportunistic access [PDF]

, 2012
Optimal resource allocation for cooperative cognitive radio networks with opportunistic access to the licensed spectrum is studied. Resource allocation is based on minimizing the symbol error rate at the receiver.
Radaydeh, Redha M., Yunfei Chen, Zafar, A, Alouini, Mohamed-Slim, Radaydeh, RM, Zafar, Ammar, Mohamed-Slim Alouini, Redha M. Radaydeh, Chen, Yunfei, Chen, Y, Ammar Zafar, Alouini, MS   +11 more
core   +1 more source

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

International 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, Firas Abedi, Ashish Bagwari, Pooja Joshi, Haider Mahmood Jawad, Sarmad Nozad Mahmood, Yousif K Yousif   +6 more
doaj   +1 more source

Performance Analysis of a Cognitive Radio Network Using Network Calculus [PDF]

, 2012
Cognitive radio has become a promising technology to increase spectrum utilization through spectrum sharing between licensed users (primary users) and unlicensed users (secondary users).
Gao, Yuehong
core   +1 more source

A survey on cognitive radio network attack mitigation using machine learning and blockchain

EURASIP Journal on Wireless Communications and Networking, 2023
Cognitive radio network is a promising technology to enhance the spectrum utilization and to resolve the spectrum scarcity issues. But the malicious users play havoc with the network during spectrum sensing and demean the network performance.
I. Evelyn Ezhilarasi, J. Christopher Clement, Joseph M. Arul   +2 more
doaj   +1 more source

Wireless Broadband Opportunities through TVWS for Networking in Rural areas of Africa [PDF]

EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 2015
In this paper, we propose a new approach based on Cognitive Radio technology to address the challenges for ensuring connectivity in remote areas of Africa.
Dramane Ouattara, Mohamed Aymen Chalouf, Francine Krief, Omessaad Hamdi   +3 more
doaj   +3 more sources

A review of spectrum sensing in modern cognitive radio networks

Telecommunications 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

Cognitive Wireless Networks Based Spectrum Sensing Strategies: A Comparative Analysis

Applied Computational Intelligence and Soft Computing, 2022
Because of numerous dormant application fields, wireless sensor networks (WSNs) have emerged as an important and novel area in radio and mobile computing research.
Anandakumar Haldorai, Jeevanandham Sivaraj, Munivenkatappa Nagabushanam, Michaelraj Kingston Roberts   +3 more
doaj   +1 more source