Frequency-Domain SWIPT and Modulation Classification: Design and Experimental Validation

Simultaneous wireless information and power transfer (SWIPT) constitutes an emerging paradigm that prolongs the lifetime of energy-constrained devices, such as wireless sensors and Internet-of-Things (IoT) nodes. Its frequency-domain (FD) variant enables energy harvesting (EH) by using (low-power) l...

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Autores principales:	Rahul Gupta, Konstantinos Ntougias, Ioannis Krikidis
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	SWIPT multitone energy signal waveform design optimization experimental validation Telecommunication TK5101-6720 Transportation and communications HE1-9990
Acceso en línea:	https://doaj.org/article/d7ad52bea21d4fe5b428d6ce5a89e656
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spelling	oai:doaj.org-article:d7ad52bea21d4fe5b428d6ce5a89e6562021-12-03T00:01:26ZFrequency-Domain SWIPT and Modulation Classification: Design and Experimental Validation2644-125X10.1109/OJCOMS.2021.3130757https://doaj.org/article/d7ad52bea21d4fe5b428d6ce5a89e6562021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9627136/https://doaj.org/toc/2644-125XSimultaneous wireless information and power transfer (SWIPT) constitutes an emerging paradigm that prolongs the lifetime of energy-constrained devices, such as wireless sensors and Internet-of-Things (IoT) nodes. Its frequency-domain (FD) variant enables energy harvesting (EH) by using (low-power) local oscillators/mixers. In this paper, a novel FD-SWIPT waveform design that minimizes the multitone interference induced to the information signal by the energy signal, thus eliminating the need for using receive filters to this end, is described. The inherent interference suppression of the proposed strategy allows also for applying modulation classification (MC). This functionality is highly desirable in contemporary networks, where the access points utilize adaptive transmission. In this context, we analytically derive the average error probability of the proposed waveform over a Rayleigh fading channel for various modulation schemes under non-zero interference and frequency synchronization errors. Furthermore, we optimize the power of the energy tones, such that the signal-to-interference-ratio at the information signal is maximized subject to the EH and transmission power constraints. In addition, we investigate the coexistence of SWIPT with blind MC under this framework. Numerical simulation results reveal that the proposed approach substantially increases both the data rate and the harvested power in comparison to the conventional power-splitting method at the cost of a negligibly higher error probability. Also, they indicate that the employed MC scheme achieves a high success rate even in the low signal-to-noise-ratio regime. The proposed concept is validated experimentally in a realistic indoor environment by using a testbed based on software-defined radio units.Rahul GuptaKonstantinos NtougiasIoannis KrikidisIEEEarticleSWIPTmultitone energy signalwaveform designoptimizationexperimental validationTelecommunicationTK5101-6720Transportation and communicationsHE1-9990ENIEEE Open Journal of the Communications Society, Vol 2, Pp 2581-2596 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	SWIPT multitone energy signal waveform design optimization experimental validation Telecommunication TK5101-6720 Transportation and communications HE1-9990
spellingShingle	SWIPT multitone energy signal waveform design optimization experimental validation Telecommunication TK5101-6720 Transportation and communications HE1-9990 Rahul Gupta Konstantinos Ntougias Ioannis Krikidis Frequency-Domain SWIPT and Modulation Classification: Design and Experimental Validation
description	Simultaneous wireless information and power transfer (SWIPT) constitutes an emerging paradigm that prolongs the lifetime of energy-constrained devices, such as wireless sensors and Internet-of-Things (IoT) nodes. Its frequency-domain (FD) variant enables energy harvesting (EH) by using (low-power) local oscillators/mixers. In this paper, a novel FD-SWIPT waveform design that minimizes the multitone interference induced to the information signal by the energy signal, thus eliminating the need for using receive filters to this end, is described. The inherent interference suppression of the proposed strategy allows also for applying modulation classification (MC). This functionality is highly desirable in contemporary networks, where the access points utilize adaptive transmission. In this context, we analytically derive the average error probability of the proposed waveform over a Rayleigh fading channel for various modulation schemes under non-zero interference and frequency synchronization errors. Furthermore, we optimize the power of the energy tones, such that the signal-to-interference-ratio at the information signal is maximized subject to the EH and transmission power constraints. In addition, we investigate the coexistence of SWIPT with blind MC under this framework. Numerical simulation results reveal that the proposed approach substantially increases both the data rate and the harvested power in comparison to the conventional power-splitting method at the cost of a negligibly higher error probability. Also, they indicate that the employed MC scheme achieves a high success rate even in the low signal-to-noise-ratio regime. The proposed concept is validated experimentally in a realistic indoor environment by using a testbed based on software-defined radio units.
format	article
author	Rahul Gupta Konstantinos Ntougias Ioannis Krikidis
author_facet	Rahul Gupta Konstantinos Ntougias Ioannis Krikidis
author_sort	Rahul Gupta
title	Frequency-Domain SWIPT and Modulation Classification: Design and Experimental Validation
title_short	Frequency-Domain SWIPT and Modulation Classification: Design and Experimental Validation
title_full	Frequency-Domain SWIPT and Modulation Classification: Design and Experimental Validation
title_fullStr	Frequency-Domain SWIPT and Modulation Classification: Design and Experimental Validation
title_full_unstemmed	Frequency-Domain SWIPT and Modulation Classification: Design and Experimental Validation
title_sort	frequency-domain swipt and modulation classification: design and experimental validation
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/d7ad52bea21d4fe5b428d6ce5a89e656
work_keys_str_mv	AT rahulgupta frequencydomainswiptandmodulationclassificationdesignandexperimentalvalidation AT konstantinosntougias frequencydomainswiptandmodulationclassificationdesignandexperimentalvalidation AT ioanniskrikidis frequencydomainswiptandmodulationclassificationdesignandexperimentalvalidation
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Frequency-Domain SWIPT and Modulation Classification: Design and Experimental Validation

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