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On cognitive processes in cognitive radio networks
Wireless Networks, 2013In this article we model the cognitive processes and evaluate their impact on the performance of cognitive radio networks (CRN). Operation of the cognitive radio nodes, can be characterized by two types of processes: communication processes such as packets transmission, and cognitive processes such as estimation of the network state and decision-making
Boris Oklander, Moshe Sidi
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Cognitive radio network management
IEEE Vehicular Technology Magazine, 2008The regulatory agencies have been pushed by the increasing demand for wireless ubiquitous connectivity to be ever more aggressive in providing innovative ways to use spectra efficiently. Driven by these new opportunities, the future radio systems should look for the optimized architecture, circuit, and algorithm as a whole. In this article, it has been
Cheng-Xiang Wang 0001 +3 more
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Cooperation in Cognitive Radio Networks
2014 Brazilian Symposium on Computer Networks and Distributed Systems, 2014The operation of cognitive radio (CR) networks involves opportunistic access to the spectrum licensed to primary users (PUs) by secondary users (SUs). Traditionally, this access is performed in such a way that the PUs suffer minimal interference to their access to the spectrum, trying to make the SUs as transparent as possible to PUs.
Pedro Smith Coutinho +2 more
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, 2010 S.423-455Cognitive radio networks are believed to be self-managed. Do we know how to engineer such systems? And, if such engineering is done, do we know how to assess the properties of a self-managed system?
Mikhail Smirnov +2 more
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Convergence of cognitive radio networks
2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733), 2004In this paper, we examine the conditions and behavior of several common convergence dynamics from game theory and show how they influence the structure of networks of cognitive radios. We then apply these to previously proposed distributed power control algorithms and describe how they impact network complexity.
James O. Neel +2 more
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Cognitive Radio Network Tomography
IEEE Transactions on Vehicular Technology, 2010The cognitive radio network (CRN), as a promising technique in future wireless communication networks, shall execute some critical functionalities to enhance existing wireless networks, such as network reconfigurability to adaptively select networks (e.g., in IEEE P1900.4 and ETSI-RSS), spectrum opportunity utilization for transmissions over ...
Chung-Kai Yu +2 more
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Radio Resource Tomography of Cognitive Radio Networks
VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009Cognitive radio (CR) is promising toward future wireless communication. By incorporating co-existing primary system(s) and CRs into a cognitive radio network (CRN), it is possible to significantly enhance overall spectrum efficiency, provided that CRs can precisely explore appropriate spectrum and network activities, which we call CRN tomography by ...
Chung-Kai Yu, Kwang-Cheng Chen
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The security in cognitive radio networks
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly, 2009Recent developments of wireless communication lead to the problem of growing spectrum shortage. Cognitive radio, as a novel technology, tends to solve this problem by dynamically utilizing the spectrum. Security in cognitive radio network becomes a challenging issue, since more chances are given to attackers by cognitive radio technology compared to ...
Xueying Zhang, Cheng Li 0005
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On the Route Priority for Cognitive Radio Networks
IEEE Transactions on Communications, 2015To fully unleash the potentials of the cognitive radio (CR) paradigm, new challenges must be addressed. Specifically, as regards the network layer, the problem of the route priority , i.e., the problem of prioritizing the routes for the CR packet transmission, is crucial, since the communication opportunities provided by a route are deeply affected
CACCIAPUOTI, ANGELA SARA +3 more
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A Survey on Cognitive Radio Networks
2010The limitation of the spectrum bands is a major bottleneck for the development of next generation wireless networks. Cognitive Radio (CR) aims at improving the spectrum utilization by taking advantage of licensed but currently unused spectrum. CR has broad applications including dynamic spectrum access and interference management, which will largely ...
Jingfang Huang +2 more
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