Results 21 to 30 of about 15,831,729 (172)
A Contract-Based Spectrum Trading Scheme for Cognitive Radio Networks Enabling Hybrid Access
IEEE Access, 2015 The latest trends in spectrum trading allow secondary users (SUs) to employ hybrid access models and exploit bandwidth employing either opportunistic spectrum access or exclusive spectrum access of vacant frequency bands (FBs) leased for exclusive usage.
Angeliki V. Kordali, Panayotis G. Cottis
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Suboptimal Approach to Distributed Detection in Cognitive Radio Networks
Journal of Telecommunications and Information Technology, 2021 In this paper a dynamic spectrum access (DSA) concept is explored for mitigating the paucity of spectral bandwidth in cognitive radio (CR) for opportunistic, dynamic access of the spectrum without any interference.
Shweta Kumari, Sirimilla Praveena
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Intelligent and Converged Networks, 2020 For a future scenario where everything is connected, cognitive technology can be used for spectrum sensing and access, and emerging coding technologies can be used to address the erasure of packets caused by dynamic spectrum access and realize cognitive ...
Peixiang Cai, Yu Zhang
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Cognitive Radio for Broadband Access in Rural Africa and other Developing Countries [PDF]
, 2011 This thesis examines how Cognitive Radio (CR) can impact broadband access in rural Africa and other developing countries. We investigate how CR through dynamic spectrum access facilitates the efficient use of underutilized spectrum (white spaces) in ...
MMARY, C. T, Charles Thomas Mmary
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ENERGY EFFICENT AUCTION BASED DYNAMIC SPECTRUM ACCESS NETWORK
International Islamic University Malaysia Engineering Journal, 2017 A framework is proposed which is aimed at increasing the much needed revenue of the wireless service providers. The model uses the price paid by the wireless users to control the amount of energy consumed and the admission process based on a dynamic ...
Abdulkarim Ayopo Oloyede
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The SS-SCR Scheme for Dynamic Spectrum Access
Journal of Computer Networks and Communications, 2012 We integrate the two models of Cognitive Radio (CR), namely, the conventional Sense-and-Scavenge (SS) Model and Symbiotic Cooperative Relaying (SCR). The resultant scheme, called SS-SCR, improves the efficiency of spectrum usage and reliability of the ...
Vinay Thumar +3 more
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Discrete Exclusion Zone for Dynamic Spectrum Access Wireless Networks
IEEE Access, 2020 The implementation of a geographic exclusion zone (GEZ) has been a scheme in regulations developed to protect a primary user (PU) in dynamic spectrum access wireless networks, where secondary users (SUs) can transmit only outside the exclusion zone ...
Chen Sun, Ruicheng Jiao
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Dynamic spectrum sharing access technology based on blockchain
物联网学报, 2020 The blockchain technology written in the smart contract has advantages of the enabling intelligent settlement,value transfer and resource sharing,which provides a new secure and trusted platform for the dynamic spectrum sharing system.Firstly,the ...
Wei WANG, Zuguang LI, Qihui WU
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Estimation of Primary Channel Mean Period Based on State Transition Probability in Cognitive Radio
IEEE Access, 2022 Primary channel mean period plays an important role in improving the performance of Dynamic Spectrum Access (DSA), because many algorithms to improve the performance of Cognitive Radio (CR) need to use the channel mean period as a prior knowledge ...
Weiqin Li, Guoliang Shentu, Xiang Gao
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Revenue Maximization in Spectrum Auction for Dynamic Spectrum Access
Proceedings of the 5th International ICST Conference on Performance Evaluation Methodologies and Tools, 2011 We investigate revenue maximization problems in auctions for dynamic spectrum access. We consider the frequency division and spread spectrum methods of dynamic spectrum sharing. In the frequency division method, a primary spectrum user allocates portions of spectrum to different secondary users. In the spread spectrum method, the primary user allocates
Ali Kakhbod +2 more
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