KSII Transactions on Internet and Information Systems (TIIS)

Korean Society for Internet Information (한국인터넷정보학회)
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Increasing Secrecy Capacity via Joint Design of Cooperative Beamforming and Jamming

  • Guan, Xinrong (Department of Wireless Communications, PLA University of Science and Technology) ;
  • Cai, Yueming (Department of Wireless Communications, PLA University of Science and Technology) ;
  • Yang, Weiwei (Department of Wireless Communications, PLA University of Science and Technology) ;
  • Cheng, Yunpeng (Department of Wireless Communications, PLA University of Science and Technology) ;
  • Hu, Junquan (Department of Wireless Communications, PLA University of Science and Technology)
  • Received : 2011.09.24
  • Accepted : 2012.03.19
  • Published : 2012.04.30
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Abstract

In this paper, we propose a hybrid cooperative scheme to improve the secrecy rate for a cooperative network in presence of multiple relays. Each relay node transmits the mixed signal consisting of weighted source signal and intentional noise. The problem of power allocation, the joint design of beamforming and jamming weights are investigated, and an iterative scheme is proposed. It is demonstrated by the numerical results that the proposed hybrid scheme further improves secrecy rate, as compared to traditional cooperative schemes.

Keywords

References

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