Showing 61 - 80 results of 269 for search '"cognitive radio"', query time: 0.05s Refine Results
  1. 61

    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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    Social-aware routing for cognitive radio–based vehicular ad hoc networks by Jing Wang, Huyin Zhang, Xing Tang, Sheng Hao

    Published 2019-07-01
    “…In cognitive radio–based vehicular ad hoc networks, the high mobility of vehicles and the dynamic spectrum activity of cognitive radio make routing in such networks a great challenge. …”
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    Article
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    COMPARATIVE ANALYSIS OF NON-COOPERATIVE SPECTRUM SENSING TECHNIQUES IN COGNITIVE RADIO NETWORK by HAMMED OYEBAMIJI LASISI, OLAJIDE MICHEAL ODOFIN, MUHAMMED BABAJIDE HAMMED, IDOWU OLAMIDE HUSSEIN

    Published 2024-03-01
    Subjects: “…cognitive radio, spectrum sensing, non-cooperative, energy detection, cyclostationary feature…”
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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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    Article
  11. 71

    Secrecy Cognitive Gain of Cognitive Radio Sensor Networks with Primary Outage Constraint by Hongyu Ma, Kai Niu, Weiling Wu, Shengyu Li, Guangqian Chu

    Published 2015-06-01
    “…This paper studies the physical layer security issue for cognitive radio sensor networks (CRSNs) with primary outage constraint, for which a tractable framework is developed to analyze the secrecy performance for CRSNs related to the random channel characteristics, the spatial distributions of nodes, the nearest neighbour routing protocol, and the aggregate interference. …”
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    Article
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    Delay optimal opportunistic pipeline routing scheme for cognitive radio sensor networks by Anfeng Liu, Wei Chen, Xiao Liu

    Published 2018-04-01
    “…In order to solve the problem of spectrum scarcity in wireless sensor networks, cognitive radio technology can be introduced into wireless sensor networks, giving rising to cognitive radio sensor networks. …”
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    Article
  15. 75

    Resource Allocation in a Cognitive Radio System with Imperfect Channel State Estimation by Tao Qin, Cyril Leung, Chunyan Miao, Zhiqi Shen

    Published 2010-01-01
    “…Cognitive radio (CR) is a promising concept for improving the utilization of scarce radio spectrum resources. …”
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    Article
  16. 76

    A contract-based cooperative spectrum sharing model in cognitive radio network by Guangqiang SHI, Ying LIU, Xiaomin MU

    Published 2016-05-01
    “…A contract-based cooperative spectrum sharing model in cognitive radio network was proposed.In this model,secondary user offers relay service for primary user when primary user's channel is poor.In return,when primary user's channel is good,secondary user can use spectrum with the underlay mode under the condition that the interference is limited.Contract theory in economics was introduced to this framework,the problem of collaboration between the primary and secondary users was modeled as a contract design problem,and the effectiveness function of evaluate primary and secondary users on contract revenue was set up.And the differential evolution algorithm was used to solve the problem.Finally,in different circumstances,primary user collaboration and un-collaboration were contrasted.The results showed that the main users under the condition of no additional input spectrum,not only save the sending power,but also effectively improve the data transfer rate,and improve the energy efficiency and spectrum efficiency.…”
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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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    Article
  20. 80

    Goodness-of-Fit Based Secure Cooperative Spectrum Sensing for Cognitive Radio Network by Hiep Vu-Van, Insoo Koo

    Published 2014-01-01
    “…Cognitive radio (CR) is a promising technology for improving usage of frequency band. …”
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    Article