Multilevel coding with low-density parity-check component codes


Conference Paper

We design multilevel coding (MLC) schemes with low-density parity-check (LDPC) codes as component codes at each level. We develop a method to analyze the performance of an LDPC code at any level as the codeword length goes to infinity even if the equivalent binary, input component channels are not symmetric. By joint optimization of code rates and degree distributions, the optimized irregular LDPC codes at each level are capable of achieving reliable transmission at signal-to-noise ratios (SNR) very close to the capacity of the additive white Gaussian noise (AWGN) channel as the codeword length tends to infinity. Simulation results show that the optimized LDPC codes also perform very well at moderate code-word lengths.

Duke Authors

Cited Authors

  • Hou, J; Siegel, PH; Milstein, LB; Pfister, HD

Published Date

  • December 1, 2001

Published In

  • Conference Record / Ieee Global Telecommunications Conference

Volume / Issue

  • 2 /

Start / End Page

  • 1016 - 1020

Citation Source

  • Scopus