High Spectrual Efficiency RC-LDPC Coded IR-HARQ Scheme
Jiang Hui · Video Engineering · 2012
To improve the spectrual efficiency of incremental redundancy scheme,a rate compatible LDPC code family is proposed,of which the coding rate ranged from 0.1 to 0.9,and the granularity is 0.1.Based on the mutual information model,which is an accurate multi-carrier link error prediction method,the minimum retransmission symbols to satisfy the reliability requirement is predicted accurately,furthermore different modulation modes are allowed.The spectrual efficiency is improved significantly in a wide range of signal-to-noise ratio.