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On the Performance Advantage of Relaying under the Finite Blocklength Regime
RWTH Aachen University.
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-6682-6559
RWTH Aachen University.
2015 (English)In: IEEE Communications Letters, ISSN 1089-7798, E-ISSN 1558-2558, Vol. 19, no 5, 779-782 p.Article in journal (Refereed) Published
Abstract [en]

We consider a two-phase relaying system with finite blocklengths. We study the performance difference of relaying under the finite blocklength regime as well as under the Shannon capacity regime. Most importantly, we are interested in the conditions that lead to a higher performance of relaying under the finite blocklength regime. We find that these situations are characterized by error probabilities of relaying, e.g., the overall error probability of relaying and the error probability of the bottleneck link of relaying. We identify scenarios where relaying outperforms direct transmission under the finite blocklength regime even if their performances are similar under the Shannon capacity regime. Moreover, we prove that under these scenarios the performance advantage of relaying is more significant with short blocklengths. Finally, numerical results are provided and discussed.

Place, publisher, year, edition, pages
IEEE Communications Society, 2015. Vol. 19, no 5, 779-782 p.
Keyword [en]
Finite blocklength, relaying, coding rate, error probability
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-165941DOI: 10.1109/LCOMM.2015.2410770ISI: 000354466200021OAI: oai:DiVA.org:kth-165941DiVA: diva2:809169
Funder
ICT - The Next Generation
Note

QC 20150604

Available from: 2015-04-30 Created: 2015-04-30 Last updated: 2017-12-04Bibliographically approved

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Gross, James

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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Output format
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