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Variable-rate anytime transmission with feedback
KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre. KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori.ORCID-id: 0000-0003-2704-6423
KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre. KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori.ORCID-id: 0000-0001-9307-484X
KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre. KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori.ORCID-id: 0000-0001-7182-9543
KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre. KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori.ORCID-id: 0000-0002-7926-5081
2016 (engelsk)Inngår i: IEEE Vehicular Technology Conference, IEEE, 2016, artikkel-id 7881963Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

sted, utgiver, år, opplag, sider
IEEE, 2016. artikkel-id 7881963
Emneord [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)
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-210142DOI: 10.1109/VTCFall.2016.7881963ISI: 000402610200441Scopus ID: 2-s2.0-85016981677ISBN: 9781509017010 (tryckt)OAI: oai:DiVA.org:kth-210142DiVA, id: diva2:1118363
Konferanse
84th IEEE Vehicular Technology Conference, VTC Fall 2016, 18 September 2016 through 21 September 2016
Merknad

QC 20170630

Tilgjengelig fra: 2017-06-30 Laget: 2017-06-30 Sist oppdatert: 2017-06-30bibliografisk kontrollert

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Grosjean, LeefkeThobaben, RagnarRasmussen, Lars K.Skoglund, Mikael

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