Construction of Irregular LDPC Codes by Quasi-Cyclic Extension

  • Authors:

  • Jinghu Chen;R. M. Tanner;Juntan Zhang;M. P.C. Fossorier

  • Affiliations:

  • Dept. of Comput. Sci., Illinois Univ., Chicago, IL;-;-;-

  • Venue:
  • IEEE Transactions on Information Theory
  • Year:
  • 2007

Quantified Score

Hi-index 754.84

Visualization

Abstract

In this correspondence, we propose an approach to construct irregular low-density parity-check (LDPC) codes based on quasi-cyclic extension. When decoded iteratively, the constructed irregular LDPC codes exhibit a relatively low error floor in the high signal-to-noise ratio (SNR) region and are subject to relatively few undetected errors. The LDPC codes constructed based on the proposed scheme remain efficiently encodable