Rate-compatible codes based on puncturing parity check bits in group
Jiandong Li · Journal of Xidian University · 2009
A new class of rate-compatible(RC) punctured codes with linear encoding complexity based on the punctured multiple accumulated crossover parallel-concatenated SPC(M-ACSPC) codes are proposed.The parity check bits are grouped according to the order of the branch where they are generated in the mother codes.The puncturing priority for each group is determined by the density evolution using a Gaussian approximation.Different groups of parity check bits are punctured to implement RC-M-ACSPC codes at different code rates.Simulation results show that the RC-M-ACSPC codes proposed have a better bit-error-rate performance over a wide code rate range than punctured RC codes based on(3,6) regular LDPC codes.