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Variable-rate anytime transmission with feedback
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0003-2704-6423
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-9307-484X
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-7182-9543
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0002-7926-5081
2016 (English)In: IEEE Vehicular Technology Conference, IEEE, 2016, 7881963Conference paper, (Refereed)
Abstract [en]

A generalization of the ensemble of non-terminated systematic LDPC convolutional codes developed in our previous work is proposed that allows us to design codes with lower rates than the original structure. We show that over the BEC, the modified codes have improved asymptotic and finite-length behavior and we determine the operational anytime exponent. Having shown the advantages of lowering the rate of the code, we propose a feedback protocol that permits encoder and decoder to operate at a variable rate. The rate is set on-the-fly and depends on the decoding success of the decoder. We describe the construction of the variable rate code structure and demonstrate by simulations the superiority of the variable rate scheme as compared to a scheme using a fixed rate.

Place, publisher, year, edition, pages
IEEE, 2016. 7881963
Keyword [en]
Convolutional codes, Decoding, Design codes, Feedback protocol, Finite length, LDPC convolutional codes, On the flies, Original structures, Variable rate, Variable rate codes, Codes (symbols)
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-210142DOI: 10.1109/VTCFall.2016.7881963ISI: 000402610200441Scopus ID: 2-s2.0-85016981677ISBN: 9781509017010 (print)OAI: oai:DiVA.org:kth-210142DiVA: diva2:1118363
Conference
84th IEEE Vehicular Technology Conference, VTC Fall 2016, 18 September 2016 through 21 September 2016
Note

QC 20170630

Available from: 2017-06-30 Created: 2017-06-30 Last updated: 2017-06-30Bibliographically approved

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Grosjean, LeefkeThobaben, RagnarRasmussen, Lars K.Skoglund, Mikael
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CiteExportLink to record
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Citation style
  • apa
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Output format
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