Results 31 to 40 of about 5,107,338 (277)

Implementation of spectrum sensing techniques for cognitive radio systems [PDF]

open access: yes, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This work presents a method for real-time detection of secondary users at the cognitive wireless technologies base stations.
Radhi, Nazar Mortada
core   +7 more sources

Optimal sensing performance for cooperative and non-cooperative cognitive radio networks

open access: yesInternational Journal of Distributed Sensor Networks, 2017
Spectrum sensing has gained new aspects with the advent of cognitive radio and opportunistic spectrum access techniques. Spectrum sensing plays a vital role in cognitive radio networks, and its reliability determines the success of transmission.
Waqas Khalid, Heejung Yu
doaj   +1 more source

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.
A. Yarmohammad   +11 more
core   +1 more source

Performance Metrics in Cognitive Radio Networks

open access: yesمجلة المختار للعلوم, 2021
In Cognitive Radio Networks (CRN), the main aim is to allow the secondary users (SUs) to identify the empty bands and use them to transmit or receive data opportunistically.
Mahmoud Ali Ammar
doaj   +1 more source

Concurrent Bandits and Cognitive Radio Networks [PDF]

open access: yes, 2014
We consider the problem of multiple users targeting the arms of a single multi-armed stochastic bandit. The motivation for this problem comes from cognitive radio networks, where selfish users need to coexist without any side communication between them, implicit cooperation or common control.
Orly Avner, Shie Mannor
openaire   +3 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

Reconfigurable wideband patch antenna for cognitive radio [PDF]

open access: yes, 2009
Cognitive radio communication is envisaged to be a new paradigm of methodologies for enhancing the performance of radio communication systems through the efficient utilization of radio spectrum.
AbuTarboush, HF   +14 more
core   +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

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

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