Cognitive Radio Oriented Wireless Networks. 10th International Conference, CROWNCOM 2015, Doha, Qatar, April 21–23, 2015, Revised Selected Papers

Research Article

Non-uniform Quantized Distributed Sensing in Practical Wireless Rayleigh Fading Channel

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  • @INPROCEEDINGS{10.1007/978-3-319-24540-9_7,
        author={Sina Fard and Hadi Hashemi and Abbas Taherpour and Tamer Khattab},
        title={Non-uniform Quantized Distributed Sensing in Practical Wireless Rayleigh Fading Channel},
        proceedings={Cognitive Radio Oriented Wireless Networks. 10th International Conference, CROWNCOM 2015, Doha, Qatar, April 21--23, 2015, Revised Selected Papers},
        proceedings_a={CROWNCOM},
        year={2015},
        month={10},
        keywords={Collaborative spectrum sensing Non-uniform quantization Rayleigh fading channel},
        doi={10.1007/978-3-319-24540-9_7}
    }
    
  • Sina Fard
    Hadi Hashemi
    Abbas Taherpour
    Tamer Khattab
    Year: 2015
    Non-uniform Quantized Distributed Sensing in Practical Wireless Rayleigh Fading Channel
    CROWNCOM
    Springer
    DOI: 10.1007/978-3-319-24540-9_7
Sina Fard1, Hadi Hashemi1, Abbas Taherpour1, Tamer Khattab2,*
  • 1: Imam Khomeini International University
  • 2: Qatar University
*Contact email: tkhattab@ieee.org

Abstract

In this paper, we study non-uniform multilevel quantization problem in cognitive radio networks (CRNs). We consider a practical collaborative spectrum sensing (CSS) scenario in which secondary users (SUs) cooperate with each other to decide about the presence of the primary user (PU). We consider a cooperative parallel access channel (CPAC) scheme in reporting channels in which SUs transmit their quantized data to fusion center (FC) for the final decision. Also, we evaluate the final summation-based decision statistic and Kullback-Leibler (KL) divergence performance criterion in the Rayleigh fading channel and additive Gaussian noise. We compare the non-uniform quantization scheme performance with the uniform one and illustrate the sensitivity of the provided quantization scheme to average error probability of symbols. Furthermore, the effect of the collaboration in the CPAC scheme on performance of the distributed sensing compared with non-cooperative scheme is investigated.