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

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Author

Summary, in English

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.

Publishing year

2015

Language

English

Publication/Series

[Host publication title missing]

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

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

Conference name

IEEE BlackSeaCom

Conference date

2015-05-19

Conference place

Constanta, Romania

Status

Published

Research group

  • Telecommunication Theory