METHOD FOR ENCODING DATA WITH AT LEAST TWO ENCODING STEPS AND AT LEAST ONE PERMUTATION STEP, CORRESPONDING ENCODING DEVICE, COMPUTER PROGRAM AND SIGNAL

摘要

The invention relates to a method for encoding data to be sent to at least one receiver, including at least two identical encoding steps and at least one permutation step, each encoding step associating a block of encoded data with a block of data to be encoded, using at least two basic codes, each code processing a subset of said data block to be encoded, and a permutation step being inserted between two encoding steps, i.e. a current encoding step and a previous encoding step, such that the order of the data in a data block to be encoded by said current encoding step is different from the order of the data encoded by said previous encoding step. According to the invention, said permutation step implements, for a data block, a rotation applied to the data of said data block and a reversal of the order of the data of said data block. Said operations can be implemented by means of an interleaving matrix.