EXIT-chart-based threshold calculation of LDPC code in 2D ISI channels

Lingjun Kong, Yong Liang Guan, Guojun Han, Kui Cai, Kheong Sann Chan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An algorithm based on the fitting of modified Extrinsic Information Transfer (EXIT) chart is proposed to calculate the thresholds of low-density parity-check (LDPC) codes optimized for the two-dimensional (2D) intersymbol interference (ISI) channels encountered in high-density magnetic recording, such as bit-patterned magnetic recording (BPMR) and two-dimensional magnetic recording (TDMR). The modified EXIT chart algorithm determines the LDPC threshold by fitting the EXIT curve of the variable node decoder (VND) combined with 2D detector (2D-DET) to the EXIT curve of the check node decoder (CND). Both the optimal Bahl-Cocke-Jelinek-Raviv (BCJR) 2D-DET and reduced-complexity Gaussian-approximated iterative row-column 2D-DET are considered.

Original languageEnglish
Title of host publication2013 19th Asia-Pacific Conference on Communications, APCC 2013
PublisherIEEE Computer Society
Pages287-292
Number of pages6
ISBN (Print)9781467360500
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 19th Asia-Pacific Conference on Communications, APCC 2013 - Denpasar, Indonesia
Duration: Aug 29 2013Aug 31 2013

Publication series

Name2013 19th Asia-Pacific Conference on Communications, APCC 2013

Conference

Conference2013 19th Asia-Pacific Conference on Communications, APCC 2013
Country/TerritoryIndonesia
CityDenpasar
Period8/29/138/31/13

ASJC Scopus Subject Areas

  • Computer Networks and Communications

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