Spatially Coupled Hybrid Concatenated Codes

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceeding

Abstract

The main purpose of this paper is to make the study of spatially coupled turbo-like codes (SC-TCs) more complete by investigating the impact of spatial coupling on the thresholds of hybrid concatenated codes (HCCs). In our previous studies, we introduced some classes of SC-TCs and considered their density evolution (DE) analysis. The obtained results indicated that for a fixed coupling memory, braided convolutional codes (BCCs) have the best belief propagation (BP) thresholds among the considered classes. Besides having excellent BP thresholds, BCCs have good distance properties and their minimum distance grows linearly with block length. Similarities between BCCs and HCCs make HCCs good competitors for BCCs. This has motivated us to investigate the impact of spatial coupling on HCCs. In this paper, we introduce two spatially coupled ensembles of HCCs, referred to as Type-I SC-HCCs and Type-II SC-HCCs. Then, we derive the exact density evolution (DE) equations for the uncoupled and the coupled ensembles for the binary erasure channel (BEC). Finally, considering different component encoders, we compute the thresholds of the SC-HCC ensembles and compare them with the thresholds of BCCs for a range of different rates.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Chalmers University of Technology
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Kommunikationssystem
Originalspråkengelska
Titel på värdpublikationProceedings of 11th International ITG Conference on Systems, Communications and Coding (SCC)
FörlagVDE Verlag gmbh Berlin
ISBN (tryckt)978-3-8007-4362-9
StatusPublished - 2017
PublikationskategoriForskning
Peer review utfördJa
Evenemang 11th International ITG Conference on Systems, Communications and Coding (SCC 2017) - Hamburg, Tyskland
Varaktighet: 2017 feb 62017 feb 9

Konferens

Konferens 11th International ITG Conference on Systems, Communications and Coding (SCC 2017)
LandTyskland
OrtHamburg
Period2017/02/062017/02/09

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