Harvested Energy and Spectral Efficiency Trade-offs in Multicell MIMO Wireless Networks

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dc.contributor.authorTien Ngoc Ha
dc.contributor.authorHa Hoang Kha
dc.coverage.issue1cs
dc.coverage.volume28cs
dc.date.accessioned2020-04-23T06:56:47Z
dc.date.available2020-04-23T06:56:47Z
dc.date.issued2019-04cs
dc.description.abstractThe paper focuses on designing precoding matrices in multi-cell multiple-input multiple-output (MIMO) simultaneous wireless information and power transfer networks (SWIPT) where the sets of users are selected for data transmission in each time slot and the unselected users are dedicated to energy harvesting. The precoding design for the SWIPT problem is formulated as a general multi-objective maximization problem, in which the sum-rate (SR) and sum harvested energy (SHE) are maximized simultaneously under the transmit power constraints. Since the objective function of the maximization problem is not concave in the design matrix variables, it is difficult to directly obtain the optimal solutions. To tackle this challenge, we recast the SR function into one more amenable by applying the connection between the minimum mean square error and achievable data rate. In addition, to deal with the non-concavity of the harvested energy function, we derive its concave minorant. Then, we develop an efficient iterative algorithm based on alternating optimization (AO) to obtain the optimal precoders. We also analyze the convergence and computational complexity of the proposed algorithm. Finally, by numerical simulation results we investigate the trade-offs between the SR and SHE.en
dc.formattextcs
dc.format.extent331-339cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2019 vol. 28, č. 1, s. 331-339. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2019.0331en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/186862
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2019/19_01_0331_0339.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectMulticell MU-MIMOen
dc.subjectSWIPTen
dc.subjectspectral efficiencyen
dc.subjectprecoding designen
dc.titleHarvested Energy and Spectral Efficiency Trade-offs in Multicell MIMO Wireless Networksen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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