ChinaCom2009-Frontiers on Communications and Networking Symposium

Research Article

Performance Analysis of Cooperative Spectrum Sensing in Rayleigh Channel

Cite
BibTeX Plain Text
  • @INPROCEEDINGS{10.1109/CHINACOM.2009.5339961,
    author={Yunxue Liu and Dongfeng Yuan and Mingyan Jiang and Jiali Xu and Ying Wu and Feijin Shi},
    title={Performance Analysis of Cooperative Spectrum Sensing in Rayleigh Channel},
    proceedings={ChinaCom2009-Frontiers on Communications and Networking Symposium},
    publisher={IEEE},
    proceedings_a={CHINACOM2009-FCN},
    year={2009},
    month={11},
    keywords={cognitive radio cooperative relay cooperative spectrum sensing number of sampling points.},
    doi={10.1109/CHINACOM.2009.5339961}
}
  • Yunxue Liu
    Dongfeng Yuan
    Mingyan Jiang
    Jiali Xu
    Ying Wu
    Feijin Shi
    Year: 2009
    Performance Analysis of Cooperative Spectrum Sensing in Rayleigh Channel
    CHINACOM2009-FCN
    IEEE
    DOI: 10.1109/CHINACOM.2009.5339961
Yunxue Liu1,*, Dongfeng Yuan2,*, Mingyan Jiang2,*, Jiali Xu2,*, Ying Wu3,*, Feijin Shi2,*
  • 1: School of Information Science and Engineering, Shandong University Jinan, 250100; School of Science and Technology for Opto-electronic Information, Yantai University Yantai, 264005
  • 2: School of Information Science and Engineering, Shandong University Jinan, 250100
  • 3: School of Science and Technology for Opto-electronic Information, Yantai University Yantai, 264005
*Contact email: yunxueliu@sdu.edu.cn, dfyuan@sdu.edu.cn, jiangmingyan@sdu.edu.cn, xujiali@sdu.edu.cn, sdytrslyx@vip.163.com, shifeijin@mail.sdu.edu.cn

Abstract

In cognitive radio networks, cooperative spectrum sensing is employed to detect the presence of primary user quickly. In this paper, we study the sensing performance of a cognitive user U1 by allowing another cognitive radio user U2 to act as its relay (cooperation). We take the average power rather than the instantaneous power as the decision statistic, so, we can use multiple signal samples in each observation to make the decision on if the primary user is present. We derive formulas of false alarm and detection probability in Rayleigh channel for the case when U2 acts as U1’s relay and for the case when each cognitive user detects the presence of primary user independently. We then analyze the improvement of sensing performance by using cooperation, and discuss the impact of number of sampling points.

Keywords
cognitive radio cooperative relay cooperative spectrum sensing number of sampling points.
Published
2009-11-20
Publisher
IEEE
Modified
2010-05-16
http://dx.doi.org/10.1109/CHINACOM.2009.5339961
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