Results 31 to 40 of about 25,855 (301)

On routing in Cognitive Radio Networks

open access: yes2012 9th International Conference on Communications (COMM), 2012
Cognitive Radio Networks (CRNs) are expected to address and to resolve important technological and operational challenges of future networks, such as Dynamic Spectrum Access (DSA), routing in heterogeneous networks and provision of Quality of Experience (QoE) for different applications.
Popescu, Alexandru, Fiedler, Markus
openaire   +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.
A. Yarmohammad   +11 more
core   +1 more source

Cognitive Wireless Networks Based Spectrum Sensing Strategies: A Comparative Analysis

open access: yesApplied 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   +3 more
doaj   +1 more source

GRU-SVM Based Threat Detection in Cognitive Radio Network

open access: yesSensors, 2023
Cognitive radio networks are vulnerable to numerous threats during spectrum sensing. Different approaches can be used to lessen these attacks as the malicious users degrade the performance of the network. The cutting-edge technologies of machine learning
Evelyn Ezhilarasi I   +1 more
doaj   +1 more source

Cognitive radio networks

open access: yes2012 9th International Conference on Communications (COMM), 2012
Cognitive Radio Networks (CRNs) are emerging as a solution to increase the spectrum utilization by using unused or less used spectrum in radio environments. The basic idea is to allow unlicensed users access to licensed spectrum, under the condition that the interference perceived by the licensed users is minimal.
openaire   +3 more sources

Resource allocation for OFDMA-based cognitive radio networks with application to H.264 scalable video transmission [PDF]

open access: yes, 2011
Resource allocation schemes for orthogonal frequency division multiple access- (OFDMA-) based cognitive radio (CR) networks that impose minimum and maximum rate constraints are considered.
Bocus, MZ   +5 more
core   +1 more source

A novel need based free channel selection scheme for cooperative CRN using EFAHP-TOPSIS

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
Emerging wireless applications needs more spectrums space to tackle the rapid growth of users. Outside of radio band in spectrum will be hard to utilize for data transmissions in terms of hardware requirement.
L. Jayakumar, S. Janakiraman
doaj   +1 more source

A Secure and Anonymous Cooperative Sensing Protocol for Cognitive Radio Networks [PDF]

open access: yes, 2011
Spectrum is an essential resource for the provision of mobile services. In order to control and delimit its use, governmental agencies set up regulatory policies.
Helena Rifà-Pous   +3 more
core   +1 more source

Self-Coexistence Among Cognitive Radio Networks Using Risk-Motivated Channel Selection Based Deference Structure

open access: yesTsinghua Science and Technology, 2013
Among cognitive radio networks there is a persistent trend of competition to acquire under-utilized and idle channels for data transmission. The competition for spectrum resources often results in the misuse of the spectrum resources as networks ...
Kenneth Ezirim, Shamik Sengupta
doaj   +1 more source

DETECTION OF UNKNOWN SIGNALS IN COGNITIVE RADIO NETWORKS

open access: yesInformation and Telecommunication Sciences, 2018
Background. At this stage of the development of wireless technologies, there is a rapid growth in the volume of information services, as well as the speed of information transfer. To meet these needs, additional frequency bands should be used.
Valeriy Bezruk, Stanislav Ivanenko
doaj   +1 more source

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