Fig. 1From: An ECSO-based approach for optimizing degree distribution of short-length LT codes Framework of SIB strategy. Describes the mechanism and process of the substitution of bottom individual (SBI) strategy. After the operation of initialization and ranking, the initial rooster and bottom individuals are selected. Substitution and classification are then implemented to redefine the hierarchy of the population. Afterward, subgroup can be obtained by grouping operationBack to article page