Results 1 to 10 of about 25,855 (301)

Communication mechanisms for cognitive radio networks

2013 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops), 2013
Comprehensive communication in cognitive radio networks is an important research topic within the scope of empowering cognitive radio functionality in beyond-4G mobile networks. Providing communication for secondary users without interference with primary users is an ambitious task, which requires innovative management architecture designs and routing ...
Popescu, Alexandru, Yao, Yong, Fiedler, Markus, Popescu, Adrian   +3 more
openaire   +4 more sources

Service-Oriented Radio Architecture: A Novel M2M Network Architecture for Cognitive Radio Systems

International Journal of Distributed Sensor Networks, 2012
In future cognitive radio networks, a number of spectrum sensors can be distributedly deployed to monitor the surrounding wireless environment, where the machine-to-machine (M2M) technology is considered to provide the interactions among sensors ...
Xu Dong, Shengqun Wei, Ying Li, Lifeng Wang, Lin Bai   +4 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

Energy efficiency in cognitive radio network using cooperative spectrum sensing based on hybrid spectrum handoff

Egyptian Informatics Journal, 2022
Rapid spectrum usage in wireless networks may reduce energy efficiency, requiring cognitive radio networks to be more efficient than conventional ones.
Kaleem Arshid, Zhang Jianbiao, Iftikhar Hussain, Muhammad Salman Pathan, Muhammad Yaqub, Abdul Jawad, Rizwan Munir, Fahad Ahmad   +7 more
doaj   +1 more source

Cooperative Spectrum Sensing in Cognitive Radio Networks: A Survey on Machine Learning-based Methods

Journal of Telecommunications and Information Technology, 2020
The continuous growth of demand experienced by wireless networks creates a spectrum availability challenge. Cognitive radio (CR) is a promising solution capable of overcoming spectrum scarcity.
Sundous Khamayseh, Alaa Halawani
doaj   +1 more source

Energy- and Cognitive-Radio-Aware Routing in Cognitive Radio Sensor Networks

International Journal of Distributed Sensor Networks, 2012
Cognitive radio sensor networks (CRSNs) are the next generation wireless sensor networks (WSNs) that mitigate overcrowded unlicensed spectrum bands by opportunistically using temporally unoccupied unlicensed and licensed spectrum bands. In this paper, we
Christian H. W. Oey, Ivan Christian, Sangman Moh   +2 more
doaj   +1 more source

DCEEMR: A Delay-Constrained Energy Efficient Multicast Routing Algorithm in Cognitive Radio Ad Hoc Networks

International Journal of Distributed Sensor Networks, 2014
We discuss the delay-constrained energy efficient multicast routing problem in cognitive radio ad hoc networks. A cognitive radio ad hoc network is a wireless multihop network established by secondary users on varying available spectrum bands.
Xuna Miao, Miaolei Deng
doaj   +1 more source

Cognitive radio and machine learning modalities for enhancing the smart transportation system: A systematic literature review

ICT Express
Smart transportation systems implemented through vehicular ad hoc networks (VANET) offer significant potential to improve safety. However, the network faces critical challenges related to security, as well as inadequate spectrum sensing and management ...
Mohd Yamani Idna Idris, Ismail Ahmedy, Tey Kok Soon, Muktar Yahuza, Abubakar Bello Tambuwal, Usman Ali   +5 more
doaj   +1 more source

Cognitive radio networks with elastic traffic

Proceedings of the 8th Euro-NF Conference on Next Generation Internet NGI 2012, 2012
We model and evaluate an infrastructure based cognitive radio network where impatient unlicensed or secondary users (SUs) offer elastic traffic. The interference created by SUs to the licensed users is analyzed when the secondary network uses two different spectrum access schemes, the conventional random access scheme and a new scheme we refer to as ...
Jorge Martínez-Bauset, Alexandru Popescu, Vicent Pla, Adrian Popescu 0002   +3 more
openaire   +3 more sources

Monopoly-Market-Based Cooperation in Cognitive Radio Networks

Journal of Communications Software and Systems, 2020
In a cognitive radio network (CRN), the primary users (PUs) do not operate their spectra, full time. Thus, they can sell them to the secondary users (SUs), for a second use, during the free time slots.
Said Lakhal, Zouhair Guennoun
doaj   +1 more source