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Fusion Rule for Cooperative Spectrum Sensing in Cognitive Radio

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Abstract

The increasing demands for wireless communication in all fields of life indicate a promising commercial potential. Cognitive radio (CR) is introduced as the radio that can replace the present smart phones in the future. Cooperative spectrum sensing is considered as an important step toward coexistence of CRs with primary users. Spectrum sensing needs to be reliable at anywhere at any time. In this paper, we put forward a scenario where cooperative spectrum sensing may not be reliable due to the specialty of the region. We also propose a fusion rule to make a reliable decision fusion at those regions. We have analyzed the performance of this fusion rule under Rayleigh fading channel and shadowing. Two separate simulation setups have been used to model these scenarios. Performance of the proposed fusion rule is compared with other fusion rules in the literature. The feature of adjustable weights according to the position of the CRs has enabled this fusion rule to perform better in the scenarios considered. With the feature of adaptability, this rule can work well in all scenarios related to cooperative spectrum sensing.

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Authors and Affiliations

  1. Rajagiri School of Engineering and Technology (RSET), Kochi, India

    Jaison Jacob & Jimson Mathew

  2. Division of Electronics Engineering, SOE, Cochin University of Science and Technology, Kochi, India

    Babita R. Jose

  3. Department of Computer Science, University of Bristol, Bristol, UK

    Jimson Mathew

Authors
  1. Jaison Jacob
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  2. Babita R. Jose
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  3. Jimson Mathew
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Correspondence to Jaison Jacob.

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Jacob, J., Jose, B.R. & Mathew, J. Fusion Rule for Cooperative Spectrum Sensing in Cognitive Radio. Circuits Syst Signal Process 35, 3418–3430 (2016). https://doi.org/10.1007/s00034-015-0208-0

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  • DOI: https://doi.org/10.1007/s00034-015-0208-0

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