A Density Evolution Based Framework for Dirty-Paper Code Design Using TCQ and Multilevel LDPC Codes Academic Article uri icon

abstract

  • We propose a density evolution based dirty-paper code design framework that combines trellis coded quantization with multi-level low-density parity-check (LDPC) codes. Unlike existing design techniques based on Gaussian approximation and EXIT charts, the proposed framework tracks the empirically collected log-likelihood ratio (LLR) distributions at each iteration, and employs density evolution and differential evolution algorithms to design each LDPC component code. The performance of the dirty-paper codes designed using the proposed method comes within 0.37 dB of the theoretical limit at 1 bit per sample transmission rate, achieving an 0.21 dB gain over the best known result. © 2012 IEEE.

author list (cited authors)

  • Yang, Y., Xiong, Z., Yu-chun, W. u., & Zhang, P.

citation count

  • 4

publication date

  • October 2012