A Collaborative RC QC-LDPC Code Construction Scheme Using Both Extension and Splitting

Huang Chang Lee, Jyun Ching Wang, Yi Tsun Huang, Yeong Luh Ueng*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

2 Scopus citations

Abstract

This letter presents a construction flow for rate-compatible LDPC (RC-LDPC) codes, collaboratively using both extension and splitting schemes. In addition to the decoding threshold used for selecting the degree distribution, a new metric, known as the Average ACE ( A{2}CE ) value, is introduced in order to estimate the Tanner graph connectivity. The proposed collaborative scheme provides more flexibility in the designs of the degree distribution and graph connectivity, both of which are critical for RC LDPC codes that have short and/or moderate lengths. The designed LDPC codes achieve a comparable or better error rate performance compared to existing codes.

Original languageEnglish
Article number9099853
Pages (from-to)1847-1851
Number of pages5
JournalIEEE Communications Letters
Volume24
Issue number9
DOIs
StatePublished - 09 2020

Bibliographical note

Publisher Copyright:
© 1997-2012 IEEE.

Keywords

  • ACE
  • Channel coding
  • RC-LDPC codes
  • extension
  • low-density parity-check code
  • rate-compatible
  • splitting

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