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Cooperative wideband spectrum sensing based on sequential compressed sensing

  • Published:
Journal of Electronics (China)

Abstract

Compressed sensing offers a new wideband spectrum sensing scheme in Cognitive Radio (CR). A major challenge of this scheme is how to determinate the required measurements while the signal sparsity is not known a priori. This paper presents a cooperative sensing scheme based on sequential compressed sensing where sequential measurements are collected from the analog-to-information converters. A novel cooperative compressed sensing recovery algorithm named Simultaneous Sparsity Adaptive Matching Pursuit (SSAMP) is utilized for sequential compressed sensing in order to estimate the reconstruction errors and determinate the minimal number of required measurements. Once the fusion center obtains enough measurements, the reconstruction spectrum sparse vectors are then used to make a decision on spectrum occupancy. Simulations corroborate the effectiveness of the estimation and sensing performance of our cooperative scheme. Meanwhile, the performance of SSAMP and Simultaneous Orthogonal Matching Pursuit (SOMP) is evaluated by Mean-Square estimation Errors (MSE) and sensing time.

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Authors and Affiliations

  1. Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China

    Bin Gu, Zhen Yang & Haifeng Hu

  2. Key Lab of Broadband Wireless Communication and Sensor Network Technology, Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China

    Bin Gu, Zhen Yang & Haifeng Hu

  3. Nanjing University of Posts and Telecommunications, Mailbox 214, Nanjing, 210003, China

    Bin Gu

Authors
  1. Bin Gu
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  2. Zhen Yang
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  3. Haifeng Hu
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Corresponding author

Correspondence to Bin Gu.

Additional information

Supported by the National High Technology Research and Development Program (No. 2009AA01Z241) and the National Natural Science Foundation (No. 60971129, No. 61071092).

Communication author: Gu Bin, born in 1983, male, Ph.D. student.

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Gu, B., Yang, Z. & Hu, H. Cooperative wideband spectrum sensing based on sequential compressed sensing. J. Electron.(China) 28, 313–319 (2011). https://doi.org/10.1007/s11767-011-0612-y

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  • DOI: https://doi.org/10.1007/s11767-011-0612-y

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