EXIT Chart Analysis for Split-LDPC Codes Conference Paper uri icon


  • Nonsystematic channel codes are superior to systematic codes in the presence of source redundancy. We study the performance of split-LDPC codes (we recently proposed), which are based on splitting redundant data bits into coded bits. We propose a novel method to build extrinsic information transfer (EXIT) chart to approximate the thresholds of such codes. EXIT charts provide a fast and close to accurate prediction of the thresholds of split-LDPC codes for nonuniform sources. The thresholds approximated by fast EXIT chart analysis are very close to those obtained by density evolution (DE) analysis that we recently proposed for split-LDPC codes. The EXIT chart analysis can thus be used to efficiently search for good split-LDPC codes. Simulations verify good performance close to the approximate thresholds predicted by the EXIT charts. 2006 IEEE.

name of conference

  • 2006 IEEE International Symposium on Information Theory

published proceedings

  • 2006 IEEE International Symposium on Information Theory

author list (cited authors)

  • Xie, K., Wang, L. i., Shamir, G., & Boutros, J.

citation count

  • 2

complete list of authors

  • Xie, Kai||Wang, Li||Shamir, Gil||Boutros, Joseph

publication date

  • July 2006