Density evolution analysis of correlated sources compressed with LDPC codes
T. Tian, Javier Garcia‐Frias, Wei Zhong · 2003
We consider a compression system for memory correlated binary sources using irregular LDPC codes as source codes. In order to incorporate the hidden Markov model (HMM) defining the source correlation, we propose a modified density evolution algorithm. Irregular LDPC codes optimized with this algorithm achieve a performance close to the theoretical Slepian-Wolf limit.