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dc.contributor.authorRao, Yepuri Sudhakaraen_US
dc.contributor.authorMadhukumar, A. S.en_US
dc.contributor.authorSirigina, Rajendra Prasaden_US
dc.identifier.citationRao, Y. S., Madhukumar, A. S., & Sirigina, R. P. (2018). RF energy harvesting based multiple access relay systems : a DMT perspective. IEEE Access, 6, 76075-76086. doi:10.1109/ACCESS.2018.2883505en_US
dc.description.abstractA multiple-access relay system, where the relay node is powered by radio frequency radiation is analyzed in this paper. Specifically, the focus is on the time-switching-based scheme in which the intermediate relay switches between the energy harvesting (EH), information decoding (ID), and the information re-transmission (TX). For this system, we have characterized the diversity-multiplexing trade-off (DMT) for two variants of the EH-based dynamic decode-and-forward (DDF) protocols: without feedback (EH-DDF) and with limited feedback (EH-DDF-LF). Analysis of the protocols reveals that the diversity gain of EHDDF scheme is inferior to that of the traditional non-EH-based DDF protocol. Furthermore, the impact of energy harvesting duration on the DMT performance has been extensively investigated. Consequently, it is observed that the achievable diversity gain of the EH-DDF improves with the reduction in energy harvesting interval. However, there exists a performance difference between the classical non-EH-based DDF and EHDDF even for the minute harvest duration. On the other hand, in the case of EH-DDF-LF, the performance approaches the diversity upper bound in the high multiplexing gain regime. Finally, a detailed comparison of the proposed EH-based schemes has been presented.en_US
dc.relation.ispartofIEEE Accessen_US
dc.rights© 2018 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. Articles accepted before 12 June 2019 were published under a CC BY 3.0 or the IEEE Open Access Publishing Agreement license. Questions about copyright policies or reuse rights may be directed to the IEEE Intellectual Property Rights Office at +1-732-562-3966 or
dc.subjectEngineering::Computer science and engineeringen_US
dc.titleRF energy harvesting based multiple access relay systems : a DMT perspectiveen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Computer Science and Engineeringen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsEnergy Harvestingen_US
dc.subject.keywordsDiversity-multiplexing Tradeoffen_US
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