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dc.contributor.authorAtapattu, S
dc.contributor.authorFan, R
dc.contributor.authorDharmawansa, P
dc.contributor.authorWang, G
dc.contributor.authorEvans, J
dc.date.accessioned2020-07-14T02:13:00Z
dc.date.available2020-07-14T02:13:00Z
dc.date.issued2020-06-19
dc.identifier.citationAtapattu, S., Fan, R., Dharmawansa, P., Wang, G. & Evans, J. (2020). Two-Way Communications via Reconfigurable Intelligent Surface. Proceedings of the 2020 IEEE Wireless Communications and Networking Conference (WCNC), 2020-May, IEEE. https://doi.org/10.1109/WCNC45663.2020.9120479.
dc.identifier.isbn9781728131061
dc.identifier.issn1525-3511
dc.identifier.urihttp://hdl.handle.net/11343/241455
dc.description.abstractThe novel reconfigurable intelligent surface (RIS) is an emerging technology which facilitates high spectrum and energy efficiencies in Beyond 5G and 6G wireless communication applications. Against this backdrop, this paper investigates two-way communications via reconfigurable intelligent surfaces (RISs) where two users communicate through a common RIS. We assume that uplink and downlink communication channels between two users and the RIS can be reciprocal. We first obtain the optimal phase adjustment at the RIS. We then derive the exact outage probability and the average throughput in closed-forms for single-element RIS. To evaluate multiple-element RIS, we first introduce a gamma approximation to model a product of Rayleigh random variables, and then derive approximations for the outage probability and the average throughput. For large average signal-to-interference-plus-noise ratio (SINR) \rho, asymptotic analXsis also shows that the outage decreases at the rate (\log(\rho)/\rho) where L is the number of elements, whereas the throughput increases with the rate \log(\rho).
dc.languageEnglish
dc.publisherIEEE
dc.source2020 IEEE Wireless Communications and Networking Conference (WCNC)
dc.titleTwo-Way Communications via Reconfigurable Intelligent Surface
dc.typeConference Paper
dc.identifier.doi10.1109/WCNC45663.2020.9120479
melbourne.affiliation.departmentElectrical and Electronic Engineering
melbourne.source.titleProceedings of the 2020 IEEE Wireless Communications and Networking Conference (WCNC)
melbourne.source.volume2020-May
melbourne.elementsid1456281
melbourne.contributor.authorAtapattu Mudiyanselage, Saman
melbourne.contributor.authorEvans, Jamie
melbourne.identifier.fundernameidMONASH UNIVERSITY, DP180101205
melbourne.identifier.fundernameidTHE UNIVERSITY OF MELBOURNE, DE160100020
melbourne.event.locationELECTR NETWORK
melbourne.accessrightsOpen Access


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