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A New Cooperative Spectrum Sensing Scheme for Cognitive Ad-Hoc Networks

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Abstract

As the radio spectrum is becoming more and more crowded, cognitive radio has recently become a hot research topic to improve the spectrum utilization efficiency. It is well known that the success of cognitive radio depends heavily on fast and efficient spectrum sensing that is very difficult in practice. Toward this end, this paper introduces a new guard-resident cooperative spectrum sensing scheme for a cognitive ad-hoc network. In particular, we classify cognitive nodes as either resident or guard based on the spectrum neighbor decision and distributed boundary search. The guard nodes sense the spectrum and then inform the resident nodes that are greatly relieved from spectrum sensing about the radio environmental changes. The analysis and simulation results show that the proposed algorithm can significantly reduce the total spectrum sensing load without sacrificing the sensing accuracy.

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Acknowledgments

This work was supported in part by the US National Science Foundation (#1032567), the University of Louisville Research Initiation Grant. The work of Weiyao Lin was supported by the National Natural Science Foundation of China (#61001146). The work of Xudong Wang was supported by the National Natural Science Foundation of China (No. 61172066), Shanghai Pujiang Scholar Program (10PJ1406100), and the MOE Program for New Century Excellent Talents.

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Authors and Affiliations

  1. School of Automation Science and Electrical Engineering, Beihang University, Beijing, China

    Yang Du & Sentang Wu

  2. Department of Electrical and Computer Engineering, University of Louisville, Louisville, KY, USA

    Hongxiang Li

  3. Institute of Image Communication and Information Processing, Shanghai Jiaotong University, Shanghai, China

    Weiyao Lin

  4. Department of Electrical Engineering and Computer Science, University of Kansas, Lawrence, KS, USA

    Lingjia Liu

  5. UM-SJTU Joint Institute, Shanghai Jiao Tong University, Shanghai, China

    Xudong Wang

  6. Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND, USA

    Samee U. Khan

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  1. Yang Du
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  2. Hongxiang Li
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  3. Weiyao Lin
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  4. Lingjia Liu
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  5. Xudong Wang
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  6. Samee U. Khan
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  7. Sentang Wu
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Correspondence to Yang Du.

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Du, Y., Li, H., Lin, W. et al. A New Cooperative Spectrum Sensing Scheme for Cognitive Ad-Hoc Networks. Mobile Netw Appl 17, 746–757 (2012). https://doi.org/10.1007/s11036-012-0387-x

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  • DOI: https://doi.org/10.1007/s11036-012-0387-x

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