A Novel Decoding Method for Rateless Codes Basing on Packet Combing

In this paper, two novel decoding methods are designed for two kinds of rateless codes: binary deterministic rateless (BDRC) codes and LT codes. The traditional decoding algorithms for the two kinds of codes discard the erroneous packets that may only contain few erroneous bits, which will causes the waste of bandwidth. The novel decoding methods adopt the packet combining technology to find the positions of the erroneous bits in the erroneous packets and correct them, which will accelerate the collection of the correct packets for the traditional decoding methods. The simulation results show that the proposed decoding methods outperform the traditional decoding methods for both BDRC codes and LT codes.