Iterative Channel Estimation and Decoding of LDPC Coded BICM on block fading channels
Chuangang Zhao, Jiaru Lin, Weiling Wu · Turbo Codes&Related Topics; 6th International ITG-Conference on Source and Channel Coding (TURBOCODING), 2006 4th International Symposium on · 2011
This paper focuses on the performance analysis of regular LDPC coded BICM for block fading channels. We propose an iterative receiver which carries out channel estimation and decoding iteratively via belief propagation algorithm over coherent and non-coherent block fading channels and derive the ML and MAP channel estimator for higher order modulations. Analysis shows that as Signal-to-Noise Ratio (SNR)or channel memory increases, MAP channel estimator becomes ML channel estimator. Simulation result verifies our analysis.