Security-Reliability Tradeoff Analysis for SWIPT- and AF-Based IoT Networks With Friendly Jammers

Tan N. Nguyen, Dinh Hieu Tran, Trinh Van Chien, Van Duc Phan, Miroslav Voznak, Phu Tran Tin, Symeon Chatzinotas, Derrick Wing Kwan Ng, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Radio-frequency (RF) energy harvesting (EH) in wireless relaying networks has attracted considerable recent interest, especially for supplying energy to relay nodes in the Internet of Things (IoT) systems to assist the information exchange between a source and a destination. Moreover, limited hardware, computational resources, and energy availability of IoT devices have raised various security challenges. To this end, physical-layer security (PLS) has been proposed as an effective alternative to cryptographic methods for providing information security. In this study, we propose a PLS approach for simultaneous wireless information and power transfer (SWIPT)-based half-duplex (HD) amplify-and-forward (AF) relaying systems in the presence of an eavesdropper. Furthermore, we take into account both static power splitting relaying (SPSR) and dynamic power splitting relaying (DPSR) to thoroughly investigate the benefits of each one. To further enhance secure communication, we consider multiple friendly jammers to help prevent wiretapping attacks from the eavesdropper. More specifically, we provide a reliability and security analysis by deriving closed-form expressions of outage probability (OP) and intercept probability (IP), respectively, for both the SPSR and DPSR schemes. Then, simulations are also performed to validate our analysis and the effectiveness of the proposed schemes. Specifically, numerical results illustrate the nontrivial tradeoff between reliability and security of the proposed system. In addition, we conclude from the simulation results that the proposed DPSR scheme outperforms the SPSR-based scheme in terms of OP and IP under the influences of different parameters on system performance.

Original languageEnglish (US)
Pages (from-to)21662-21675
Number of pages14
JournalIEEE Internet of Things Journal
Issue number21
StatePublished - Nov 1 2022
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Information Systems
  • Hardware and Architecture
  • Computer Science Applications
  • Computer Networks and Communications


  • Amplify and forward (AF)
  • dynamic power splitting (PS)
  • intercept probability (IP)
  • outage probability (OP)
  • simultaneous wireless information and power transfer (SWIPT)
  • source selection


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