Results 11 to 20 of about 9,664 (251)

Secure Cooperative Spectrum Sensing Strategy Based on Reputation Mechanism for Cognitive Wireless Sensor Networks

open access: yesIEEE Access, 2020
Cooperative spectrum sensing can be regarded as a promising method to resolve the spectrum scarcity owing to achieving spatial diversity gain in cognitive radio sensor networks.
Xianquan Luo
doaj   +1 more source

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

ON THE LOCATION-AWARE COOPERATIVE SPECTRUM SENSING IN URBAN ENVIRONMENT [PDF]

open access: yesJordanian Journal of Computers and Information Technology, 2016
Spectrum sensing is a key enabling technology for cognitive radio networks (CRNs). The main objective of spectrum sensing is to provide more spectrum access opportunities to cognitive radio users without interfering with the operations of the licensed ...
Raouf Abozariba   +3 more
doaj   +1 more source

Defending Against Cooperative Attacks in Cooperative Spectrum Sensing [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2013
Accurate spectrum sensing is important in cognitive radio networks. False sensing results in either waste of spectrum or harmful interference to primary users. To improve accuracy, cooperative spectrum sensing, in which a set of secondary users cooperatively sense the presence of the primary user, has emerged.
Zhengrui Qin, Qun Li 0001, George Hsieh
openaire   +1 more source

Cooperative distributed sequential spectrum sensing

open access: yes2011 National Conference on Communications (NCC), 2011
This paper has been withdrawn by the author due to the submission of detailed journal version of the same paper, to ...
S, Jithin K   +2 more
openaire   +2 more sources

Advanced Energy Detector Based Cooperative Spectrum Sensing In Cognitive Networks

open access: yesMATEC Web of Conferences, 2016
Cognitive radio is a befitting hopeful technology for future. Spectrum sensing is the most critical function of cognitive radio. Most of the spectrums sensing processes proposed earlier become impractical at lower signal to noise ratio conditions.
Ritu, Seehra Ameeta
doaj   +1 more source

Overhead Reduction in Cooperative Spectrum Sensing Via Sequential Detection in Cognitive Radio Networks Under Bandwidth Constraint [PDF]

open access: yesJournal of Intelligent Procedures in Electrical Technology, 2014
Reliable and efficient spectrum sensing plays an important role in cognitive radio networks. On the other hand, accurate and fast sensing of spectrum is the main function of a cognitive radio for cognitive users to avoid harmful interference in licensed ...
Samira Torabi   +2 more
doaj  

Consensus-Based Distributive Cooperative Spectrum Sensing for Mobile Ad Hoc Cognitive Radio Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2013
Cognitive radio network (CRN) is an intelligent network that provides solution to underutilization of spectrum band by detecting spectrum holes. For this purpose, certain important tasks including spectrum sensing, spectrum analysis, and spectrum ...
Anam Raza   +3 more
doaj   +1 more source

Energy-Efficient Cooperative Spectrum Sensing Scheme Based on Spatial Correlation for Cognitive Internet of Things

open access: yesIEEE Access, 2020
Due to the negative impact from spatial correlation, spatially correlated cognitive radio (CR) based devices participating in cooperative spectrum sensing may be harmful to the detection performance.
Runze Wan   +3 more
doaj   +1 more source

Research on the multiuser MIMO linear cooperative spectrum sensing in cognitive radio networks

open access: yesTongxin xuebao, 2012
The multiuser MIMO based linear cooperative spectrum sensing problem was investigated in cognitive radio system to improve the reliability of spectrum sensing.Both the local spectrum detecting strategy and global spectrum detecting strategy for multiuser
Yong-qiang HEI, Xiao-hui LI, Wen-tao LI
doaj   +2 more sources

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