Secure Full-Duplex Two-Way Relaying for SWIPT

Alexander A. Okandeji, Muhammad R. A. Khandaker*, Kai-Kit Wong, Gan Zheng, Yangyang Zhang, Zhongbin Zheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)
29 Downloads (Pure)


This letter studies bi-directional secure information exchange in a simultaneous wireless information and power transfer system enabled by a full-duplex multiple-input multiple-output amplify-and-forward (AF) relay. The AF relay injects artificial noise (AN) in order to confuse the eavesdropper. Specifically, we assume a zeroforcing (ZF) solution constraint to eliminate the residual self-interference. As a consequence, we address the optimal joint design of the ZF matrix and the AN covariance matrix at the relay node as well as the transmit power at the sources. We propose an alternating algorithm utilizing semi-definite programming technique and 1-D searching to achieve the optimal solution. Simulation results are provided to demonstrate the effectiveness of the proposed algorithm.

Original languageEnglish
Pages (from-to)336-339
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number3
Early online date23 Nov 2017
Publication statusPublished - 1 Jun 2018


  • energy harvesting
  • Full-duplex
  • physical layer security
  • relay
  • secrecy

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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