Doped Accumulate LT Codes
Xiaojun Yuan, Li Ping · 2007
We introduce a family of rateless codes, namely the doped accumulate LT (DALT) codes, that are capacity-approaching on a binary erasure channel (BEC) with bounded encoding and decoding complexity. DALT codes can be either systematic or non-systematic. Non-systematic DALT codes are very similar to raptor codes, except that joint optimization on the full coding graph can be applied to DALT codes, and thus they can be optimized to have better asymptotic performance than raptor codes. Systematic DALT codes, with the proposed protocol, exhibit better performance and lower complexity than their non-systematic counterparts.