SC-LDPC Codes over the Block-Fading Channel: Robustness to a Synchronisation Offset

Iryna Andriyanova, Najeeb ul Hassan, Michael Lentmaier, Gerhard Fettweis

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

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Abstract

Spatially-Coupled LDPC (SC-LDPC) codes have been recently shown to be very efficient for transmissions over nonergodic channels, in particular over block-fading channels [1]. In fact, it is possible to design a SC-LDPC code with any given code diversity [2]. In this work, we investigate the performance of SC-LDPC codes over block-fading channels, assuming a mismatch (or offset) between the first bit of a transmission packet and a first bit of a codeword. Such a mismatch is called the synchronisation offset, and it has a negative impact on the code diversity. We propose a data-allocation scheme for SC-LDPC codes that allows to obtain a robustness to the synchronisation offset. Combined together with the code design from [2], it allows to design efficient SC-LDPC codes, whose performance degrades only slowly under imperfect transmission conditions.
Original languageEnglish
Title of host publication[Host publication title missing]
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Number of pages5
Publication statusPublished - 2015
EventIEEE BlackSeaCom - Constanta, Romania
Duration: 2015 May 19 → …

Conference

ConferenceIEEE BlackSeaCom
Country/TerritoryRomania
CityConstanta
Period2015/05/19 → …

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Free keywords

  • spatial coupling
  • spatially coupled codes
  • LDPC codes
  • LDPC convolutional codes
  • block fading channel
  • root LDPC codes

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