ws 14(1): e3

Research Article

Spectrum Sensing: To Cooperate or Not to Cooperate?

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  • @ARTICLE{10.4108/ws.1.1.e3,
    author={Dongliang Duan and Liuqing Yang and Shuguang Cui},
    title={Spectrum Sensing: To Cooperate or Not to Cooperate?},
    journal={EAI Endorsed Transactions on Wireless Spectrum},
    volume={1},
    number={1},
    publisher={ICST},
    journal_a={WS},
    year={2014},
    month={4},
    keywords={Cognitive Radio, Cooperative Spectrum Sensing, Diversity, Efficiency and Reliability},
    doi={10.4108/ws.1.1.e3}
}
  • Dongliang Duan
    Liuqing Yang
    Shuguang Cui
    Year: 2014
    Spectrum Sensing: To Cooperate or Not to Cooperate?
    WS
    ICST
    DOI: 10.4108/ws.1.1.e3
Dongliang Duan1, Liuqing Yang2,*, Shuguang Cui3
  • 1: Department of Electrical and Computer Engineering, University of Wyoming, Laramie, WY
  • 2: Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO
  • 3: Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX
*Contact email: lqyang@engr.colostate.edu

Abstract

While it is well accepted that cooperative spectrum sensing will significantly improve the sensing performance, the necessity of cooperation is not sufficiently appreciated. In this paper, by analyzing the spectrum sensing problem from the system perspective, we show that without cooperation, the performance will suffer from a fundamental tradeoff between reliability and efficiency. However, if cooperation is incorporated in the spectrum sensing process and the threshold is selected appropriately, the efficiencyreliability tradeoff in the non-cooperative case can be largely overcome by exploiting the cooperative diversity. These results show that cooperation in spectrum sensing is not just a luxury but a necessity.

Keywords
Cognitive Radio, Cooperative Spectrum Sensing, Diversity, Efficiency and Reliability
Accepted
2013-12-08
Published
2014-04-11
Publisher
ICST
http://dx.doi.org/10.4108/ws.1.1.e3

Copyright © 2014 D. Duan et al., licensed to ICST. This is an open access article distributed under the terms of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.