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    History-assisted energy-efficient spectrum sensing for infrastructure-based cognitive radio networks

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    Authors
    Syed, Tazeen Shabana
    Safdar, Ghazanfar Ali
    Affiliation
    University of Bedfordshire
    Issue Date
    2016-06-28
    Subjects
    spectrum sensing
    energy efficiency
    cognitive radio
    G420 Networks and Communications
    
    Metadata
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    Abstract
    Spectrum sensing is a prominent functionality to enable dynamic spectrum access (DSA) in cognitive radio (CR) networks. It provides protection to primary users (PUs) from interference and creates opportunities of spectrum access for secondary users (SUs). It should be performed efficiently to reduce the number of false alarms and missed detections. Continuous sensing for a long time incurs cost in terms of increased energy consumption; thus, spectrum sensing ought to be energy efficient to ensure the prolonged existence of CR devices. This paper focuses on using of history to help achieve energy-efficient spectrum sensing in infrastructure-based CR networks. The scheme employs an iteratively developed history processing database that is used by CRs to make decisions about spectrum sensing, subsequently resulting in reduced spectrum scanning and improved energy efficiency. Two conventional spectrum sensing schemes, i.e., energy detection (ED) and cyclostationary feature detection (CFD), are enriched by history to demonstrate the effectiveness of the proposed scheme. System-level simulations are performed to investigate the sensitivity of the proposed history-based scheme by performing detailed energy consumption analysis for the aforementioned schemes. Results demonstrate that the employment of history ensued in improved energy efficiency due to reduced spectrum scanning. This paper also suggests which spectrum sensing scheme can be the best candidate in a particular scenario by looking into computational complexity before comparative analysis is presented with other states of the art.
    Citation
    Syed TS, Safdar GA (2017) 'History-assisted energy-efficient spectrum sensing for infrastructure-based cognitive radio networks', IEEE Transactions on Vehicular Technology, 66 (3), pp.2462-2473.
    Publisher
    IEEE
    Journal
    IEEE Transactions on Vehicular Technology
    URI
    http://hdl.handle.net/10547/623046
    DOI
    10.1109/TVT.2016.2585763
    Additional Links
    https://ieeexplore.ieee.org/document/7501579
    Type
    Article
    Language
    en
    ISSN
    0018-9545
    ae974a485f413a2113503eed53cd6c53
    10.1109/TVT.2016.2585763
    Scopus Count
    Collections
    Computing

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