Results 31 to 40 of about 180,577 (228)

Public safety and cognitive radio [PDF]

open access: yes, 2009
This book gives comprehensive and balanced coverage of the principles of cognitive radio communications, cognitive networks, and details of their implementation, including the latest developments in the standards and spectrum policy. Case studies, end-of-
Heskamp, Marnix   +2 more
core   +3 more sources

Securing cognitive radio networks

open access: yesInternational Journal of Communication Systems, 2010
AbstractCognitive radio is a promising technology aiming to improve the utilization of the radio electromagnetic spectrum. A cognitive radio device uses general purpose computer processors that run radio applications software to perform signal processing.
León Abarca, Olga   +2 more
openaire   +4 more sources

Coopetition spectrum trading in cognitive radio networks [PDF]

open access: yes, 2013
Spectrum trading is a promising method to improve spectrum usage efficiency. Several issues must be addressed, however, to enable spectrum trading that goes beyond conservative trading idle bands and achieve cooperation between primary and secondary ...
Cui, L, Znati, T
core   +2 more sources

Social-aware routing for cognitive radio–based vehicular ad hoc networks

open access: yesInternational Journal of Distributed Sensor Networks, 2019
Cognitive radio–based vehicular ad hoc networks can solve the problem of limited spectrum resource and growing vehicular communication service demands in intelligent transportation systems, and thus, it receives much concern recently.
Jing Wang   +3 more
doaj   +1 more source

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

open access: yesInternational 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   +4 more
doaj   +1 more source

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

open access: yesEAI 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   +3 more
doaj   +3 more sources

Spectrum sharing and cognitive radio [PDF]

open access: yes, 2009
Spectrum sharing has been the subject of a 3 year research programme organised by the UK's Virtual Centre of Excellence in Mobile and Personal Communications.
Beach, MA   +5 more
core   +2 more sources

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

open access: yesEgyptian 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   +7 more
doaj   +1 more source

Spectrum Coordination in Energy Efficient Cognitive Radio Networks [PDF]

open access: yes, 2014
Device coordination in open spectrum systems is a challenging problem, particularly since users experience varying spectrum availability over time and location.
Habachi, Oussama   +2 more
core   +6 more sources

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

open access: yesJournal 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

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