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Title: RF energy harvesting based multiple access relay systems : a DMT perspective
Authors: Rao, Yepuri Sudhakara
Madhukumar, A. S.
Sirigina, Rajendra Prasad
Keywords: Engineering::Computer science and engineering
Issue Date: 2018
Source: Rao, 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.2018.2883505
Journal: IEEE Access
Abstract: A 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.
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2018.2883505
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
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCSE Journal Articles

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