Low-density parity-check codes for nonergodic block-fading channels

Joseph Jean Boutros, Albert Guillén I Fàbregas, Ezio Biglieri, Gilles Zémor

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

We design powerful low-density parity-check (LDPC) codes with iterative decoding for the block-fading channel. We first study the case of maximum-likelihood decoding, and show that the design criterion is rather straightforward. Since optimal constructions for maximum-likelihood decoding do not perform well under iterative decoding, we introduce a new family of full-diversity LDPC codes that exhibit near-outage-limit performance under iterative decoding for all block-lengths. This family competes favorably with multiplexed parallel turbo codes for nonergodic channels.

Original languageEnglish
Article number5550477
Pages (from-to)4286-4300
Number of pages15
JournalIEEE Transactions on Information Theory
Volume56
Issue number9
DOIs
Publication statusPublished - Sep 2010

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Keywords

  • Block-fading (BF) channel
  • iterative decoding
  • low-density parity-check (LDPC) codes
  • maximum-distance separable (MDS) codes
  • maximum-likelihood (ML) decoding
  • outage probability

ASJC Scopus subject areas

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences

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