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Maximizing energy efficiency for multiple DF relay system with QoS constraint
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-6682-6559
2013 (English)In: Proceedings of the Tenth International Symposium on Wireless Communication Systems (ISWCS 2013), IEEE conference proceedings, 2013, p. 419-423Conference paper, Published paper (Refereed)
Abstract [en]

Multiple relays assisted transmission is an effective way to enhance the reliability of wireless communication network. However multiple relays joining in the transmission costs more energy and may reduce the energy efficiency of the system. In this paper, we investigate the energy efficiency performance of multiple decode-and-forward relays system under a quality of service constraint. In particular, we study a feedback-limited scenario where only the knowledge of average channel gain is available at the source. First, we define a tradeoff factor and based on it design a tradeoff mechanism between energy efficiency and outage probability. Second, we prove that the energy efficiency of the system is a piecewise strictly monotonic function of our tradeoff factor and has only one extreme value which is the global maximum. Third, by means of simulation we show that the numerical results perfectly match our theoretical analysis. In addition, we show that energy efficiency can achieve the extreme value under the loose QoS constraint.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2013. p. 419-423
Series
Proceedings of the International Symposium on Wireless Communication Systems, ISSN 2154-0217
Keywords [en]
Average CSI, Decode-and forward, Energy efficiency, Multiple relays, QoS constraint
National Category
Communication Systems Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-136881Scopus ID: 2-s2.0-84903163695ISBN: 978-3-8007-3529-7 (print)OAI: oai:DiVA.org:kth-136881DiVA, id: diva2:677432
Conference
IEEE International Symposium on Wireless Communication Systems (ISWCS 2013),27-30 Aug. 2013,Ilmenau, Germany
Note

QC 20140102

Available from: 2013-12-09 Created: 2013-12-09 Last updated: 2022-06-23Bibliographically approved

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fulltext(318 kB)182 downloads
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • 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