Showing 1 - 20 results of 32 for search '"cognitive radio networks"', query time: 0.11s Refine Results
  1. 1

    Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access by Ammar Zafar, Mohamed-Slim Alouini, Yunfei Chen, Redha M. Radaydeh

    Published 2012-01-01
    “…Optimal resource allocation for cooperative cognitive radio networks with opportunistic access to the licensed spectrum is studied. …”
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    Article
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    Quorum Systems towards an Asynchronous Communication in Cognitive Radio Networks by Sylwia Romaszko, Petri Mähönen

    Published 2012-01-01
    “…This paper reviews quorum systems (QS) from the perspective of cognitive radio networks. Quorum systems were originally developed for and widely used in the scope of operating systems. …”
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    Article
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    Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks by Andreas Merentitis, Dionysia Triantafyllopoulou

    Published 2010-01-01
    “…An algorithm for cooperative Dynamic Spectrum Access in Cognitive Radio networks is presented. The proposed algorithm utilizes Medium Access Control layer mechanisms for message exchange between secondary nodes that operate in license exempt spectrum bands, in order to achieve interference mitigation. …”
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    Article
  5. 5

    Optimal sensing performance for cooperative and non-cooperative cognitive radio networks by Waqas Khalid, Heejung Yu

    Published 2017-11-01
    “…Spectrum sensing plays a vital role in cognitive radio networks, and its reliability determines the success of transmission. …”
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    Article
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    A Truthful Bilateral Multiunit Auction for Heterogeneous Cognitive Radio Networks by Jinzhao Su, Jianfei Wang, Wei Wu

    Published 2011-10-01
    “…Existing auction schemes are either to be unilateral trade which only supports heterogeneous cognitive radio networks without guarantee of bid truthfulness, or to be truthful single-unit auction which only supports homogeneous channels. …”
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    Article
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    Energy-efficient and intelligent cooperative spectrum sensing algorithm in cognitive radio networks by Tangsen Huang, Xiangdong Yin, Xiaowu Li

    Published 2022-09-01
    “…As the next-generation communication network, cognitive radio network also needs to meet the requirements of green communication. …”
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    Article
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    A Secure Cooperative Spectrum Sensing Scheme in Mobile Cognitive Radio Networks by Jun Du, Daoxing Guo, Bangning Zhang, Ligang Shang

    Published 2014-06-01
    “…However, in existing works, the problem of secure CSS in mobile cognitive radio networks (CRNs) has not been well considered yet. …”
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    Secure Cooperative Spectrum Sensing for the Cognitive Radio Network Using Nonuniform Reliability by Muhammad Usman, Insoo Koo

    Published 2014-01-01
    “…Both reliable detection of the primary signal in a noisy and fading environment and nullifying the effect of unauthorized users are important tasks in cognitive radio networks. To address these issues, we consider a cooperative spectrum sensing approach where each user is assigned nonuniform reliability based on the sensing performance. …”
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    Channel Selection Based on Trust and Multiarmed Bandit in Multiuser, Multichannel Cognitive Radio Networks by Fanzi Zeng, Xinwang Shen

    Published 2014-01-01
    “…This paper proposes a channel selection scheme for the multiuser, multichannel cognitive radio networks. This scheme formulates the channel selection as the multiarmed bandit problem, where cognitive radio users are compared to the players and channels to the arms. …”
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    Improved Energy Detector with Weights for Primary User Status Changes in Cognitive Radio Networks by Xianzhong Xie, Xiaofeng Hu, Bin Ma, Ting Song

    Published 2014-03-01
    “…This paper presents an improved energy detector (ED) with weights to improve detection performance in this situation that the primary user's status changes as arriving or leaving randomly in cognitive radio networks. The idea is derived from the concept of unequal scale sampling such that the instantaneous energy statistic of the sampling points in the sensing period is endowed with monotonic weights. …”
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    Joint Subchannel Pairing and Power Control for Cognitive Radio Networks with Amplify-and-Forward Relaying by Yanyan Shen, Shuqiang Wang, Zhiming Wei

    Published 2014-01-01
    “…Dynamic spectrum sharing has drawn intensive attention in cognitive radio networks. The secondary users are allowed to use the available spectrum to transmit data if the interference to the primary users is maintained at a low level. …”
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    Article
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    The User Requirement Based Competitive Price Model for Spectrum Sharing in Cognitive Radio Networks by Fang Ye, Yibing Li, Rui Yang, Zhiguo Sun

    Published 2013-11-01
    “…We analyze the competitive price game model for spectrum sharing in cognitive radio networks with multiple primary users and secondary users and propose a user requirement based competitive price game model for the calculation of the shared spectrum size of cognitive user in Bertrand game. …”
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    Cooperative Communication in Cognitive Radio Networks under Asymmetric Information: A Contract-Theory Based Approach by Nan Zhao, Minghu Wu, Wei Xiong, Cong Liu

    Published 2015-10-01
    “…This paper establishes a valuable cooperative communication mechanism in cognitive radio networks.…”
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    Article
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    Dynamic Spectrum Sensing Under Crash and Byzantine Failure Environments for Distributed Convergence in Cognitive Radio Networks by Ali Mustafa, Muhammad Najam Ul Islam, Salman Ahmed

    Published 2021-01-01
    “…Energy detector module is modeled for each cooperating SU in cognitive radio network for sensing the presence of PU in a dedicated spectrum. …”
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    Article