Design of low-density parity-check codes using linear programming for modulation and detection
Yi Yang, Changqing Xu, Zhang Haibin · 2006
LDPC-MIMO system provides great capacity increment in wireless communications. Based on the powerful analysis tool of the extrinsic information transfer chart, we are able to design optimal LDPC code via curve fitting. Degree profile of the code can be optimized using linear programming and mutual information transfer function. Via simulation, our profile provides a better curve match and performance in MIMO fading channels. This fact manifests the significance to design good LDPC codes to fit different channels.