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Buffer-Aided Successive Relay Selection Scheme for Energy Harvesting IoT Networks
Univ Engn & Technol Taxila, Taxila 47050, Pakistan..
Univ Engn & Technol Taxila, Taxila 47050, Pakistan..
Univ Lahore, Lahore 54000, Pakistan..
Univ Engn & Technol Taxila, Taxila 47050, Pakistan..ORCID iD: 0000-0003-4968-993X
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2019 (English)In: IEEE Access, E-ISSN 2169-3536, Vol. 7, p. 36246-36258Article in journal (Refereed) Published
Abstract [en]

In this paper, we analyze the impact of buffer-aided full-duplex successive relay selection schemes with energy harvesting capability of relay nodes in amplifying and forward (AF) and decode and forward (DF) relaying environments for the Internet of Things networks. We propose to select a relay pair based on the energy harvested and signal strength at relay and destination to receive and transmit in the same time slot, respectively. Contrary to the previous relay pair selection schemes which are based on the signal strength only and cause the relay overuse problem, the proposed scheme ensures the balanced use of energy of relay nodes. The proposed relay selection scheme is implemented with the time switching (TS) and power splitting (PS)-based energy harvesting models in AF and DF relaying environments separately. Furthermore, we derive the closed-form expression of the outage probability and average throughput for both the TS and PS approaches in the DF and AF relaying modes. We compare the proposed relay selection scheme with the S-MMRS scheme and prove that the proposed scheme significantly reduces the outage probability and improves the average throughput. Furthermore, the analytical findings are reinforced with the extensive Monte Carlo simulations.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2019. Vol. 7, p. 36246-36258
Keywords [en]
Buffer-aided, SWIPT, cooperative relaying, diversity gain, successive relaying
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-251232DOI: 10.1109/ACCESS.2019.2901734ISI: 000464563300001Scopus ID: 2-s2.0-85063948822OAI: oai:DiVA.org:kth-251232DiVA, id: diva2:1315026
Note

QC 20190510

Available from: 2019-05-10 Created: 2019-05-10 Last updated: 2019-05-10Bibliographically approved

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Tenhunen, Hannu

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