liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Utility maximization models for two-hop energy relaying in practical RF harvesting networks
Department of Electrical Engineering, Indian Institute of Technology Delhi, New Delhi, India.ORCID iD: 0000-0002-3225-6495
Department of Electrical Engineering, Indian Institute of Technology Delhi, New Delhi, India.
2017 (English)In: IEEE International Conference on Communications Workshops (ICC Workshops), Institute of Electrical and Electronics Engineers (IEEE), 2017, p. 41-46Conference paper, Published paper (Refereed)
Abstract [en]

Cooperative energy relaying helps in improving the radio frequency (RF) energy transfer (ET) efficiency by harvesting the otherwise dissipated energy and then transferring it to the nearby energy receiver. The achievable RF-ET gains are strongly influenced by the relative relay placement (RP), which may cause blocking of the direct energy transfer (DET) path between RF source and receiver, or energy signals from RF source and relay may add destructively. So, to maximize the utility of an RF energy harvesting (RF-EH) energy relay, we propose (a) a novel slotted harvest-then-transfer-energy protocol to avoid interference to DET, and (b) optimal no-impact on line-of-sight (Ni-LoS) RP model for avoiding obstruction to the existing LoS or DET path due to its physical presence. Further, an accurate piecewise linear approximation for harvested dc power as a function of received RF power is presented to incorporate the practical RF-EH hardware constraints. Since the optimal RP problem for maximizing harvested energy at receiver from EH relay is nonconvex, conditional generalized convexity principles are used to obtain the closed-form global-optimal solution. Numerical performance of the proposed utility maximization models for EH RP is investigated under practical RF-EH system settings.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2017. p. 41-46
Series
IEEE International Conference on Communications Workshops (ICC Workshops), E-ISSN 2474-9133 ; 2017
Keywords [en]
Energy dissipation; Piecewise linear techniques, Cooperative energies; Direct energy transfers; Generalized convexity; Global optimal solutions; Hardware constraints; Numerical performance; Piecewise linear approximations; Utility maximization model, Energy transfer
National Category
Communication Systems Signal Processing Computer and Information Sciences
Identifiers
URN: urn:nbn:se:liu:diva-155750DOI: 10.1109/ICCW.2017.7962631OAI: oai:DiVA.org:liu-155750DiVA, id: diva2:1299088
Conference
IEEE International Conference on Communications Workshops (ICC Workshops), 21-25 May, Paris, France
Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-03-26Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Mishra, Deepak

Search in DiVA

By author/editor
Mishra, Deepak
Communication SystemsSignal ProcessingComputer and Information Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 8 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf