Full-Duplex DF Relaying With Parallel Hybrid FSO/RF Transmissions

The ever-increasing demands for higher data rates in telecommunications networks, along with the significant benefits offered by wireless communications, have pushed the technological developments to new frontiers. Free-space optical (FSO) communications are among the technologies that can address t...

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Autores principales:	Michalis P. Ninos, Priyadarshi Mukherjee, Constantinos Psomas, Ioannis Krikidis
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Hybrid RF/FSO systems full-duplex relaying Nakagami-<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">m</italic> fading self-interference IQ imbalance atmospheric turbulence Telecommunication TK5101-6720 Transportation and communications HE1-9990
Acceso en línea:	https://doaj.org/article/ab912263e1d149cfaedb5d33b24e6b48
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spelling	oai:doaj.org-article:ab912263e1d149cfaedb5d33b24e6b482021-11-23T00:02:05ZFull-Duplex DF Relaying With Parallel Hybrid FSO/RF Transmissions2644-125X10.1109/OJCOMS.2021.3126544https://doaj.org/article/ab912263e1d149cfaedb5d33b24e6b482021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9608969/https://doaj.org/toc/2644-125XThe ever-increasing demands for higher data rates in telecommunications networks, along with the significant benefits offered by wireless communications, have pushed the technological developments to new frontiers. Free-space optical (FSO) communications are among the technologies that can address these emerging demands, offering large and unregulated bandwidth. In addition, recent advances in radio frequency (RF) systems have enabled the development of in-band full-duplex (FD) radios with the employment of advanced self-interference cancelation techniques. Therefore, in this paper we study a robust FD relaying system comprised of parallel hybrid FSO/RF communication links, where the coordination of transmissions between the FSO/RF subsystems is carried out by the hard-switching protocol. The operation of the RF links is impaired by Nakagami-<inline-formula> <tex-math notation="LaTeX">$m$ </tex-math></inline-formula> fading, the residual self-interference due to the FD relaying operation, and the in-phase and quadrature-phase imbalance effect due to imperfect RF front-ends. As far as the FSO links are concerned, we consider the influence of the joint effects of atmospheric turbulence, beam wander and pointing errors. We first derive analytical closed-form expressions for the outage probability of both subsystems as well as for the overall FD relaying hybrid system. Then, asymptotic expressions are extracted for the outage performance in the high signal-to-noise ratio regime. The achievable outage diversity orders of both FSO and RF subsystems are determined, which provide significant insight into the design of such hybrid systems in a wide variety of operating conditions. Finally, the numerical results are presented using the derived outcomes, and significant conclusions are drawn about FD relaying hybrid systems.Michalis P. NinosPriyadarshi MukherjeeConstantinos PsomasIoannis KrikidisIEEEarticleHybrid RF/FSO systemsfull-duplex relayingNakagami-<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">m</italic> fadingself-interferenceIQ imbalanceatmospheric turbulenceTelecommunicationTK5101-6720Transportation and communicationsHE1-9990ENIEEE Open Journal of the Communications Society, Vol 2, Pp 2502-2515 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Hybrid RF/FSO systems full-duplex relaying Nakagami-<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">m</italic> fading self-interference IQ imbalance atmospheric turbulence Telecommunication TK5101-6720 Transportation and communications HE1-9990
spellingShingle	Hybrid RF/FSO systems full-duplex relaying Nakagami-<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">m</italic> fading self-interference IQ imbalance atmospheric turbulence Telecommunication TK5101-6720 Transportation and communications HE1-9990 Michalis P. Ninos Priyadarshi Mukherjee Constantinos Psomas Ioannis Krikidis Full-Duplex DF Relaying With Parallel Hybrid FSO/RF Transmissions
description	The ever-increasing demands for higher data rates in telecommunications networks, along with the significant benefits offered by wireless communications, have pushed the technological developments to new frontiers. Free-space optical (FSO) communications are among the technologies that can address these emerging demands, offering large and unregulated bandwidth. In addition, recent advances in radio frequency (RF) systems have enabled the development of in-band full-duplex (FD) radios with the employment of advanced self-interference cancelation techniques. Therefore, in this paper we study a robust FD relaying system comprised of parallel hybrid FSO/RF communication links, where the coordination of transmissions between the FSO/RF subsystems is carried out by the hard-switching protocol. The operation of the RF links is impaired by Nakagami-<inline-formula> <tex-math notation="LaTeX">$m$ </tex-math></inline-formula> fading, the residual self-interference due to the FD relaying operation, and the in-phase and quadrature-phase imbalance effect due to imperfect RF front-ends. As far as the FSO links are concerned, we consider the influence of the joint effects of atmospheric turbulence, beam wander and pointing errors. We first derive analytical closed-form expressions for the outage probability of both subsystems as well as for the overall FD relaying hybrid system. Then, asymptotic expressions are extracted for the outage performance in the high signal-to-noise ratio regime. The achievable outage diversity orders of both FSO and RF subsystems are determined, which provide significant insight into the design of such hybrid systems in a wide variety of operating conditions. Finally, the numerical results are presented using the derived outcomes, and significant conclusions are drawn about FD relaying hybrid systems.
format	article
author	Michalis P. Ninos Priyadarshi Mukherjee Constantinos Psomas Ioannis Krikidis
author_facet	Michalis P. Ninos Priyadarshi Mukherjee Constantinos Psomas Ioannis Krikidis
author_sort	Michalis P. Ninos
title	Full-Duplex DF Relaying With Parallel Hybrid FSO/RF Transmissions
title_short	Full-Duplex DF Relaying With Parallel Hybrid FSO/RF Transmissions
title_full	Full-Duplex DF Relaying With Parallel Hybrid FSO/RF Transmissions
title_fullStr	Full-Duplex DF Relaying With Parallel Hybrid FSO/RF Transmissions
title_full_unstemmed	Full-Duplex DF Relaying With Parallel Hybrid FSO/RF Transmissions
title_sort	full-duplex df relaying with parallel hybrid fso/rf transmissions
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/ab912263e1d149cfaedb5d33b24e6b48
work_keys_str_mv	AT michalispninos fullduplexdfrelayingwithparallelhybridfsorftransmissions AT priyadarshimukherjee fullduplexdfrelayingwithparallelhybridfsorftransmissions AT constantinospsomas fullduplexdfrelayingwithparallelhybridfsorftransmissions AT ioanniskrikidis fullduplexdfrelayingwithparallelhybridfsorftransmissions
_version_	1718417394738659328

Full-Duplex DF Relaying With Parallel Hybrid FSO/RF Transmissions

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