Full-Duplex Backscatter Communications in Symbiotic Radio Systems

In this paper, we are interested in a symbiotic radio (SR) system, in which a passive full-duplex backscatter device (BD) is parasitic in an active primary transmission. The primary transmitter (PT) with multiple antennas is designed to broadcast common messages to the primary receiver (PR) and the...

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Autores principales:	Ruizhe Long, Huayan Guo, Lin Zhang, Ying-Chang Liang
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2019
Materias:	Symbiotic radio backscatter communication Internet-of-Things (IoT) full-duplex optimization Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/2f82379576854708ad7ba70917bf9ef0
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spelling	oai:doaj.org-article:2f82379576854708ad7ba70917bf9ef02021-11-19T00:02:14ZFull-Duplex Backscatter Communications in Symbiotic Radio Systems2169-353610.1109/ACCESS.2019.2898474https://doaj.org/article/2f82379576854708ad7ba70917bf9ef02019-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/8638762/https://doaj.org/toc/2169-3536In this paper, we are interested in a symbiotic radio (SR) system, in which a passive full-duplex backscatter device (BD) is parasitic in an active primary transmission. The primary transmitter (PT) with multiple antennas is designed to broadcast common messages to the primary receiver (PR) and the BD, as well as to support passive information transmission from the BD to the PR. To do so, the full-duplex BD absorbs a fraction of the incident signal from the PT to decode the common messages and simultaneously transmits its own information to the PR by backscattering the remaining part of the incident signal. We derive the achievable rates of the BD transmission with Gaussian and quadrature amplitude modulation codewords. We also formulate a transmit power minimization problem by jointly designing the beamforming vector at the PT and the power splitting factor at the BD. This problem is first solved by the semi-definite relaxation technique together with a one-dimensional linear exhaustive search over the power splitting factor. Then, a suboptimal but low-complexity solution with closed-form expressions is proposed. The simulation results have shown that the proposed suboptimal solution achieves almost the same performance as that obtained by the exhaustive search. In addition, our proposed SR system with the full-duplex BD outperforms the half-duplex system with the time-division-multiplexing mode in general.Ruizhe LongHuayan GuoLin ZhangYing-Chang LiangIEEEarticleSymbiotic radiobackscatter communicationInternet-of-Things (IoT)full-duplexoptimizationElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 7, Pp 21597-21608 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Symbiotic radio backscatter communication Internet-of-Things (IoT) full-duplex optimization Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Symbiotic radio backscatter communication Internet-of-Things (IoT) full-duplex optimization Electrical engineering. Electronics. Nuclear engineering TK1-9971 Ruizhe Long Huayan Guo Lin Zhang Ying-Chang Liang Full-Duplex Backscatter Communications in Symbiotic Radio Systems
description	In this paper, we are interested in a symbiotic radio (SR) system, in which a passive full-duplex backscatter device (BD) is parasitic in an active primary transmission. The primary transmitter (PT) with multiple antennas is designed to broadcast common messages to the primary receiver (PR) and the BD, as well as to support passive information transmission from the BD to the PR. To do so, the full-duplex BD absorbs a fraction of the incident signal from the PT to decode the common messages and simultaneously transmits its own information to the PR by backscattering the remaining part of the incident signal. We derive the achievable rates of the BD transmission with Gaussian and quadrature amplitude modulation codewords. We also formulate a transmit power minimization problem by jointly designing the beamforming vector at the PT and the power splitting factor at the BD. This problem is first solved by the semi-definite relaxation technique together with a one-dimensional linear exhaustive search over the power splitting factor. Then, a suboptimal but low-complexity solution with closed-form expressions is proposed. The simulation results have shown that the proposed suboptimal solution achieves almost the same performance as that obtained by the exhaustive search. In addition, our proposed SR system with the full-duplex BD outperforms the half-duplex system with the time-division-multiplexing mode in general.
format	article
author	Ruizhe Long Huayan Guo Lin Zhang Ying-Chang Liang
author_facet	Ruizhe Long Huayan Guo Lin Zhang Ying-Chang Liang
author_sort	Ruizhe Long
title	Full-Duplex Backscatter Communications in Symbiotic Radio Systems
title_short	Full-Duplex Backscatter Communications in Symbiotic Radio Systems
title_full	Full-Duplex Backscatter Communications in Symbiotic Radio Systems
title_fullStr	Full-Duplex Backscatter Communications in Symbiotic Radio Systems
title_full_unstemmed	Full-Duplex Backscatter Communications in Symbiotic Radio Systems
title_sort	full-duplex backscatter communications in symbiotic radio systems
publisher	IEEE
publishDate	2019
url	https://doaj.org/article/2f82379576854708ad7ba70917bf9ef0
work_keys_str_mv	AT ruizhelong fullduplexbackscattercommunicationsinsymbioticradiosystems AT huayanguo fullduplexbackscattercommunicationsinsymbioticradiosystems AT linzhang fullduplexbackscattercommunicationsinsymbioticradiosystems AT yingchangliang fullduplexbackscattercommunicationsinsymbioticradiosystems
_version_	1718420660509736960

Full-Duplex Backscatter Communications in Symbiotic Radio Systems

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