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Joint beamforming and cooperative jamming for secure transmission in multi-antenna decode-and-forward relaying sensor networks: A greedy switching strategy

Author

Listed:
  • Zhi Lin
  • Li Lou
  • Bin Gao
  • Fenggang Sun
  • Yuzhen Huang
  • Maoqiang Yang
  • Mingfang Ni

Abstract

In wireless sensor networks, sensor nodes are deployed to collect data and deliver the sensed information to a base station in a wireless manner. Due to the broadcast nature of wireless sensor communications, relay-sensor-based secure transmission remains a challenging issue. This article proposes a joint cooperative beamforming and jamming scheme in the relay wireless sensor networks, where the switching strategy from cooperative beamforming to cooperative jamming is applied to weaken the signal-to-interference-plus-noise ratio of the eavesdropper when the decoding threshold is not triggered. In particular, based on Charnes–Cooper transformation and S-procedure, semi-definite programming is constructed to solve the robust cooperative beamforming and jamming with a low implementation complexity, respectively. Additionally, we adopt the global power constraints in semi-definite programming to take full exploitation of the power at relay sensor. Finally, simulation results demonstrate the superiority of the proposed scheme in comparison with the traditional decode-and-forward robust scheme and the non-robust scheme.

Suggested Citation

  • Zhi Lin & Li Lou & Bin Gao & Fenggang Sun & Yuzhen Huang & Maoqiang Yang & Mingfang Ni, 2017. "Joint beamforming and cooperative jamming for secure transmission in multi-antenna decode-and-forward relaying sensor networks: A greedy switching strategy," International Journal of Distributed Sensor Networks, , vol. 13(5), pages 15501477177, May.
    • Handle: RePEc:sae:intdis:v:13:y:2017:i:5:p:1550147717709460
    DOI: 10.1177/1550147717709460
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