Secure Beamforming Designs for Secrecy MIMO SWIPT Systems

Zhengyu Zhu, Zheng Chu, Fuhui Zhou, Hehao Niu, Zhongyong Wang, Inkyu Lee

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)


In this letter, secure beamforming designs are investigated in a multiple-input multiple-output secrecy channels with simultaneous wireless information and power transfer. In order to achieve fairness among different multiple energy harvesting receivers, the minimum harvested energy is maximized under the secrecy rate requirements. In particular, in order to reduce the computational complexity of the semidefinite programming problem, a successive convex approximation (SCA) iterative algorithm is proposed in the perfect channel state information (CSI) case to obtain a near-optimal rank-one solution. Moreover, the original problem is extended to the imperfect CSI case by incorporating a norm-bounded error model, where an SCA-based iterative algorithm is also proposed. Simulation results reveal that the SCA-based iterative algorithm achieves the same performance as the semidefinite relaxation method with reduced complexity.

Original languageEnglish
Pages (from-to)424-427
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number3
Publication statusPublished - 2018 Jun

Bibliographical note

Funding Information:
Manuscript received November 12, 2017; accepted November 28, 2017. Date of publication December 7, 2017; date of current version June 19, 2018. This work was supported in part by the National Nature Science Foundation of China under Grant 61571402, Grant 61301150, Grant 61571401, Grant 61640005, Grant 61701214, and Grant 61401401, and in part by the National Research Foundation funded by the Ministry of Science, ICT and Future Planning of Korea Government under Grant 2017R1A2B3012316. The associate editor coordinating the review of this paper and approving it for publication was I. Krikidis. (Corresponding author: Zhongyong Wang.) Z. Zhu and Z. Wang are with the School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China (e-mail:;

Publisher Copyright:
© 2012 IEEE.


  • MIMO system
  • secure beamforming
  • semidefinite relaxation
  • successive convex approximation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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