Results 11 to 20 of about 5,107,338 (277)

A dynamic spectrum access scheme for cognitive radio networks [PDF]

open access: yes, 2009
—In this paper, the dynamic spectrum access problem for cognitive radio (CR) networks is formulated as maximizing the sum channel capacity while satisfying the power budgets of individual secondary user radios as well as the SINR constraints on both the ...
Du, KL, Ni, Q, Swamy, MNS
core   +7 more sources

Reinforcement Learning-based Spectrum Sharing for Cognitive Radio [PDF]

open access: yes, 2011
This thesis investigates how distributed reinforcement learning-based resource assignment algorithms can be used to improve the performance of a cognitive radio system.
Jiang, Tao
core   +6 more sources

Cognitive MAC protocols for mobile Ad-Hoc networks [PDF]

open access: yes, 2013
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The term of Cognitive Radio (CR) used to indicate that spectrum radio could be accessed dynamically and opportunistically by unlicensed users.
Masrub, Abdullah Ashur
core   +7 more sources

Optimizing cooperative cognitive radio networks with opportunistic access [PDF]

open access: yes, 2012
Optimal resource allocation for cooperative cognitive radio networks with opportunistic access to the licensed spectrum is studied. Resource allocation is based on minimizing the symbol error rate at the receiver.
Radaydeh, Redha M.   +11 more
core   +1 more source

Algorithms for cognitive radio network and cognitive radio network cloud [PDF]

open access: yes, 2021
Η πρωτοτυπία της παρούσας διατριβής έγκειται στο ότι πρότεινε και περιέγραψε ένα πλαίσιο δικτύου αναφοράς για Έλεγχο Πρόσβασης στο Μέσο για Γνωστικά Ασύρματα Δίκτυα και Νέφος και SDR Υπηρεσίες και για Έλεγχο Πρόσβασης στο Μέσο για Γνωστικά Ασύρματα Δίκτυα και Νέφος και SDR Αφηρημένες Υπηρεσίες και ολοκλήρωση τους και ανάπτυξη τους σε όλα κατά OSI ...
openaire   +1 more source

On the Security of Cognitive Radio Networks [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2015
Cognitive radio has emerged as an essential recipe for future high-capacity, high-coverage multitier hierarchical networks. Securing data transmission in these networks is of the utmost importance. In this paper, we consider the cognitive wiretap channel and propose multiple antennas to secure the transmission at the physical layer, where the ...
Maged Elkashlan   +4 more
openaire   +2 more sources

Joint Optimization of Receiver Placement and Illuminator Selection for a Multiband Passive Radar Network

open access: yesSensors, 2017
The performance of a passive radar network can be greatly improved by an optimal radar network structure. Generally, radar network structure optimization consists of two aspects, namely the placement of receivers in suitable places and selection of ...
Rui Xie   +3 more
doaj   +1 more source

Noncooperative equilibrium solutions for spectrum access in distributed cognitive radio networks [PDF]

open access: yes, 2008
This paper considers the problem of channel selection and dynamic spectrum access in distributed cognitive radio networks. The ability of a cognitive radio to adaptively switch between channels offers tremendous scope to optimize performance.
Zhong Fan   +9 more
core   +1 more source

Spectrum Sensing, Clustering Algorithms, and Energy-Harvesting Technology for Cognitive-Radio-Based Internet-of-Things Networks

open access: yesSensors, 2023
The aim of this systematic review was to identify the correlations between spectrum sensing, clustering algorithms, and energy-harvesting technology for cognitive-radio-based internet of things (IoT) networks in terms of deep-learning-based ...
Xavier Fernando, George Lăzăroiu
doaj   +1 more source

Security in cognitive radio networks [PDF]

open access: yes2014 48th Annual Conference on Information Sciences and Systems (CISS), 2014
Submitted to CISS ...
openaire   +2 more sources

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