Robust Secrecy Beamforming and Power-Splitting Design for Multiuser MISO Downlink with SWIPT

Hehao Niu, Bangning Zhang, Yuzhen Huang, Daoxing Guo, Zheng Chu, Zhengyu Zhu

Research output: Journal PublicationArticlepeer-review

18 Citations (Scopus)


In this paper, we investigate the physical layer security design in multiuser multiple-input single-output downlink with simultaneous wireless information and power transfer. Specifically, by considering that legitimate receivers use power splitting to extract information and harvest energy simultaneously, we investigate the robust weighted sum secrecy rate maximization design, subject to multiple signal-to-interference-and-noise ratio and harvested energy constraints. To solve the formulated highly nonconvex problem and avoid high-rank solution obtained by the common semidefinite relaxation method, we utilize the constrained concave convex procedure and second-order cone programming to formulate a tractable problem and propose an iterative algorithm to obtain the solution. In addition, we discuss the feasibility condition and computational complexity of our algorithm. Furthermore, our algorithm can be extended to other optimization designs. Simulation results show the superiority of our proposed design.

Original languageEnglish
Article number8340765
Pages (from-to)1367-1375
Number of pages9
JournalIEEE Systems Journal
Issue number2
Publication statusPublished - Jun 2019
Externally publishedYes


  • Energy harvesting (EH)
  • physical layer security (PLS)
  • power splitting (PS)
  • robust optimization
  • simultaneous wireless information and power transfer (SWIPT)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Information Systems
  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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