University of Oulu

D. E. Pérez, O. L. A. López, H. Alves and M. Latva-aho, "Self-Energy Recycling for Low-Power Reliable Networks: Half-Duplex or Full-Duplex?," in IEEE Systems Journal, vol. 16, no. 3, pp. 4780-4791, Sept. 2022, doi: 10.1109/JSYST.2021.3127266

Self-energy recycling for low-power reliable networks : half-duplex or full-duplex?

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Author: Echevarría Pérez, Dian1; Alcaraz López, Onel L.1; Alves, Hirley1;
Organizations: 1Centre for Wireless Communications, University of Oulu, Oulu 90570, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.4 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2022-02-16


Self-energy recycling (sER), which allows transmit energy reutilization, has emerged as a viable option for improving the energy efficiency (EE) in low-power Internet of Things networks. In this article, we investigate its benefits also in terms of reliability improvements and compare the performance of full-duplex (FD) and half-duplex (HD) schemes when using multiantenna techniques in a communication system. We analyze the tradeoffs when considering not only the energy spent on transmission but also the circuitry power consumption, thus making the analysis of much more practical interest. In addition to the well-known spectral efficiency improvements, results show that FD also outperforms HD in terms of reliability. We show that sER introduces not only benefits in EE matters but also some modifications on how to achieve maximum reliability fairness between uplink and downlink transmissions, which is the main goal in this article. In order to achieve this objective, we propose the use of a dynamic FD scheme where the small base station determines the optimal allocation of antennas for transmission and reception. We show the significant improvement gains of this strategy for the system outage probability when compared to the simple HD and FD schemes.

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Series: IEEE systems journal
ISSN: 1932-8184
ISSN-E: 1937-9234
ISSN-L: 1932-8184
Volume: 16
Issue: 3
Pages: 4780 - 4791
DOI: 10.1109/JSYST.2021.3127266
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, 6Genesis Flagship under Grant 318927, in part by the Academy Professor under Grant 307492, and in part by the EE-IoT under Grant 319008.
Academy of Finland Grant Number: 307492
Detailed Information: 307492 (Academy of Finland Funding decision)
319008 (Academy of Finland Funding decision)
318927 (Academy of Finland Funding decision)
Copyright information: © The Author(s) 2021. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see