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Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding
Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).ORCID iD: 0000-0001-6497-4099
Department of Computer Engineering, Chalmers University of Technology, Gothenburg, Sweden.
Department of Computer Engineering, Chalmers University of Technology, Gothenburg, Sweden & Institute for Telecommunications Research, University of South Australia, Mawson Lakes, SA, Australia.
Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS).
2003 (English)In: The IEEE Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE, Piscataway, NJ: IEEE , 2003, p. 849-854Conference paper, Published paper (Refereed)
Abstract [en]

We consider serially concatenated block codes in a hybrid ARQ scheme using iterative decoding. The extrinsic information generated in the iterative decoding process is saved and used when a retransmission is decoded. Two different strategies are examined; one using the extrinsic information only in the very first iteration, whereas the other uses it in all subsequent iterations until another retransmission arrives. The latter can be seen as turbo or concatenated code combining whereas the former, where the extrinsic information is used only once may be seen as code doping, providing an alternative perspective. The strategy of saving the extrinsic information is also compared to traditional type-III, equal gain diversity combining. Using the extrinsic information from previous retransmission is shown to improve performance not only in terms of bit error rate but also in terms of throughput and convergence speed and requires only negligible additional decoder complexity. The performance of this strategy is however not as good as simple equal gain combining. As a consequence, the investigated schemes are not competitive alternatives, however, the code doping procedure can be used in conjunction with traditional diversity combining schemes, improving further on convergence speed.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE , 2003. p. 849-854
Series
IEEE Wireless Communications and Networking Conference, ISSN 1525-3511 ; 2003, vol. 2
Keywords [en]
Automatic repeat request, Block codes, Concatenated codes, Convergence, Turbo codes, Packet radio networks
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:hh:diva-403DOI: 10.1109/WCNC.2003.1200482ISI: 000182770600154Scopus ID: 2-s2.0-4143120266ISBN: 0-7803-7700-1 (print)OAI: oai:DiVA.org:hh-403DiVA, id: diva2:237582
Conference
The IEEE Wireless Communications and Networking Coneference, 20-20 March, 2003, New Orleans, LA, USA
Note

©2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Available from: 2010-01-29 Created: 2007-01-17 Last updated: 2018-03-23Bibliographically approved

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Uhlemann, ElisabethWiberg, Per-Arne

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NO
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  • Other locale
More languages
Output format
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