University of Oulu

I. W. G. D. Silva, J. D. V. Sánchez, E. E. B. Olivo and D. P. Moya Osorio, "Impact of Self-Energy Recycling and Cooperative Jamming on SWIPT-Based FD Relay Networks With Secrecy Constraints," in IEEE Access, vol. 10, pp. 24132-24148, 2022, doi: 10.1109/ACCESS.2022.3155498

Impact of self-energy recycling and cooperative jamming on SWIPT-based FD relay networks with secrecy constraints

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Author: Da Silva, Isabella Wanderley Gomes1; Sánchez, José David Vega2; Olivo, Edgar Eduardo Benitez1;
Organizations: 1São Paulo State University (UNESP), Campus of São João da Boa Vista, São João da Boa Vista 13876-750, Brazil
2Departamento de Electrónica, Telecomunicaciones y Redes de Información, Escuela Politécnica Nacional (EPN), Quito 170525, Ecuador
3Centre for Wireless Communications (CWC), University of Oulu, 90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.2 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2022
Publish Date: 2022-05-17


This paper investigates the secrecy performance of a power splitting-based simultaneous wireless information and power transfer cooperative relay network in the presence of an eavesdropper. The relay is considered to operate in full-duplex (FD) mode to perform both energy harvesting and information decoding simultaneously. To accomplish that, the relay is assumed to employ two rechargeable batteries, which switch between power supplying mode and charging mode at each transmission block. We also assume that the self-interference inherent of the FD mode is not completely suppressed. Therefore, it is assumed that, after some stages of passive and active self-interference cancellation, there is still a residual self-interference (RSI). A portion of this RSI (remaining after passive cancellation) is recycled for energy harvesting. In order to improve the system secrecy performance, it is considered that the relay can split its transmit power to send the information signal and to emit a jamming signal to degrade the eavesdropper’s channel. The secrecy performance is evaluated in terms of the secrecy outage probability and the optimal secrecy throughput. Tight-approximate and asymptotic expressions are obtained for the secrecy outage probability, and the particle swarm optimization method is employed for addressing the secrecy throughput optimization problem. From numerical results, we show that the secrecy performance can be increased depending on the self-energy recycling channel condition. Finally, our derived expressions are validated via Monte Carlo simulations.

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Series: IEEE access
ISSN: 2169-3536
ISSN-E: 2169-3536
ISSN-L: 2169-3536
Volume: 10
Pages: 24132 - 24148
DOI: 10.1109/ACCESS.2022.3155498
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported in part by the Academy of Finland, 6G Flagship, under Grant 318927; in part by the FAITH Project under Grant 334280; and in part by the Brazilian National Council for Scientific and Technological Development (CNPq) under Grant 421850/2018-3.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
334280 (Academy of Finland Funding decision)
Copyright information: © The Author(s) 2022. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see