A SUB-BLOCK BASED CYCLIC UPDATING METHOD FOR LOW-DELAY FOUNTAIN CODING

摘要

A coding method and a decoding method are provided to suppress delay of data effectively, when transmitting the data through a wireless Internet, which causes the loss in a real-time multimedia service sensitive to delay. An input symbol is divided into the predetermined number of same sub-blocks. An encoding time section is divided into same sub-time sections corresponding to the number of the divided sub-blocks. Initial input symbols are generated by using symbols having sizes corresponding to the sub-blocks. Initial output symbols are generated by using the initial input symbols. Symbols corresponding to a new sub-block, which is to be encoded every sub-time section, are sequentially received and then added to the input symbols(710). A symbol corresponding to the first received sub-block is removed to update the input symbol(720). An output symbol related to the first received sub-block is updated. A packet is generated by using the updated output symbol(725).