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Spatial-Temporal Spectrum Access Analysis for Multi-Channel Mobile Cognitive Radio Networks

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Abstract

Cognitive radios have demonstrated its ability in improving spectrum efficiency by accessing licensed spectrum bands opportunistically. Along with the popularity of mobile broadband devices in future mobile communications, research for cognitive radios with mobility will be paid more and more attentions. In this paper, a multi-channel cognitive radio network with mobile secondary users is investigated. Based on the reality that the primary licensed channels have different available states on spatial and temporal dimensions for secondary users, we analyze the spatial-temporal spectrum utilization rate and derive the network throughput of secondary users combined with successful probability of wireless transmission. Finally, through maximizing the throughput we obtain the optimal spectrum access strategy. Numerical results show the effect of the system parameters on the proposed strategy and verify our proposed strategy outperforms other strategies such as equiprobable, inverse proportional and random access strategies.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (Nos. 61271207, 61372104, 61502210) and Natural Science Foundation of Jiangsu Province of China (No. BK20160294).

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Authors and Affiliations

  1. School of Electrical and Information Engineering, Jiangsu University of Technology, Changzhou, China

    Lei Zhang

  2. NCRL, Southeast University, Nanjing, China

    Tiecheng Song & Jing Hu

  3. School of Computer Science and Communication Engineering, Jiangsu University, Zhenjiang, China

    Xu Bao

Authors
  1. Lei Zhang
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  2. Tiecheng Song
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  3. Jing Hu
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  4. Xu Bao
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Correspondence to Lei Zhang.

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Zhang, L., Song, T., Hu, J. et al. Spatial-Temporal Spectrum Access Analysis for Multi-Channel Mobile Cognitive Radio Networks. Wireless Pers Commun 94, 2819–2831 (2017). https://doi.org/10.1007/s11277-016-3720-z

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  • DOI: https://doi.org/10.1007/s11277-016-3720-z

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