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Improving Physical Layer Security Using Artificial Noise for Buffer-Aided Relay Networks

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Book cover Communications, Signal Processing, and Systems (CSPS 2018)

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 515))

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Abstract

It has been verified that cooperative communication technology is an effective way to achieve physical layer security. Recently, people paid much attention to the cooperative networks with buffering relay, which can get a significant performance advantage. In this paper, we investigate the secure problem in decode-and-forward buffer-aided cooperative networks. Based on modified Max-ratio relay selection criteria, artificial noise is transmitted by the source when the selected buffering relay decode and forward message to the destination. The numerical simulation results demonstrate that our proposed Max-ratio with artificial noise (Max-ratio-AN for short) not only outperforms previously reported no-buffer-aided cooperative secure schemes by providing a significant coding gain for small buffer sizes but also ensures a diversity gain enhancement. Comparing to the existing Max-ratio scheme, it also can offer higher secure performance with appropriate artificial noise added.

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Notes

  1. 1.

    Here, perfect synchronization is assumed between Alice and relays. In fact, the synchronization can be easily guaranteed, for example, when Alice has no information data to transmit, she can emit the artificial noise to guarantee the timely jamming confusion for Eve.

  2. 2.

    T-DFbORS is the abbreviation of the traditional DF-based optimal relay selection scheme, it does not consider the wiretap link’s channel state information (CSI) and only maximizes the main channel’s SNR.

  3. 3.

    P-DFbORS is the abbreviation of the proposed DF-based optimal relay selection scheme [19], it chooses the optimal relay that maximizes the secrecy capacity of DF relaying transmission.

  4. 4.

    The theoretic performance bound is an important research work in the future.

  5. 5.

    Secrecy diversity order determines the slope of the asymptotic outage probability curve [19]. The bigger the value, the outage probability declines more quickly as SNR.

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Acknowledgments

This research was supported by the National Nature Science Foundation of China under grant 61471392 and 41705042.

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Authors and Affiliations

  1. Army Academy of Artillery and Air Defense (Nanjing Campus), Nanjing, China

    Yajun Zhang, Huaming Wang & Wenli Shi

Authors
  1. Yajun Zhang
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  2. Huaming Wang
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  3. Wenli Shi
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Corresponding author

Correspondence to Yajun Zhang .

Editor information

Editors and Affiliations

  1. Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX, USA

    Qilian Liang

  2. School of Information and Communication Engineering, Dalian University of Technology, Dalian, Liaoning, China

    Xin Liu

  3. School of Information Science and Technology, Dalian Maritime University, Dalian, China

    Zhenyu Na

  4. College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin, China

    Wei Wang

  5. College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin, China

    Jiasong Mu

  6. College of Physical and Electronic Information, Tianjin Normal University, Tianjin, China

    Baoju Zhang

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Zhang, Y., Wang, H., Shi, W. (2019). Improving Physical Layer Security Using Artificial Noise for Buffer-Aided Relay Networks. In: Liang, Q., Liu, X., Na, Z., Wang, W., Mu, J., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2018. Lecture Notes in Electrical Engineering, vol 515. Springer, Singapore. https://doi.org/10.1007/978-981-13-6264-4_5

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  • DOI: https://doi.org/10.1007/978-981-13-6264-4_5

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-6263-7

  • Online ISBN: 978-981-13-6264-4

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