A full-duplex SWIPT system with self-energy recycling to minimize energy consumption

Hyunjong Na, Chungyong Lee

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In simultaneous wireless information and power transfer system (SWIPT), additional resource allocation for power transfer degrades system performance. Therefore, how to allocate power and time to data transmission and energy transfer is very important for the performance of time switching-based SWTPT system. In this paper, we propose a time switching-based full-duplex SWIPT system combined with self-energy recycling since self-interference harvesting is more efficient than simultaneous data transmission if the magnitude of self-interference is sufficiently large. Proposed system has additional self-energy recycling phases compared to the conventional time switching-based full-duplex SWIPT system. Considering the limitation of maximum transmission power, proposed system is optimized transmission time as well as power. For the validity of the proposed system, we show the bi-convexity of proposed system and propose an iterative algorithm for optimization of proposed system. In simulations, we compare proposed system with the half-duplex system without simultaneous data transmission phase and the full-duplex system without self-energy recycling phase. Simulation results show proposed system consume less energy than the conventional systems.

Original languageEnglish
Article number253
JournalEurasip Journal on Wireless Communications and Networking
Issue number1
Publication statusPublished - 2018 Dec 1

Bibliographical note

Funding Information:
This study was supported by the National Research Foundation of Korea (NRF-2015R1D1A1A01058644).

Publisher Copyright:
© 2018, The Author(s).

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Science Applications
  • Computer Networks and Communications


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