Method for encoding data with at least two encoding steps, and at least one permutation step, corresponding encoding device, computer program and signal

A device for encoding data to be transmitted to at least one receiver, the device comprising:

• at least two identical or encoding modules, each encoding module associating, with a block of data to be encoded, a block of data encoded by using at least two base encoders, each base encoder processing one subset of said block of data to be encoded, and
• at least one permutation module, each permutation module being interposed between two encoding modules, called a current encoding module and a previous encoding module, so that the order of pieces of data of the block of data to be encoded by said current encoding module, is different from the order of these pieces of data encoded by said previous encoding module, wherein said permutation module comprises:
• means for rotating the data of said block of data;
• and
• means for inverting the order of the data of said block of data.

A computer program product recorded on a non-transitory computer-readable medium and executable by a processor, wherein the computer program product comprises program code instructions to implement method for encoding data to be transmitted to at least one receiver, when the instructions are executed on the processor, wherein the method comprises:

• at least two identical encoding steps, each encoding step associating, with a block of data to be encoded, a block of encoded data, using at least two base codes, each base code processing a subset of said block of data to be encoded, and
• at least one permutation step, each permutation step being interposed between two encoding steps, called a current encoding step and a previous encoding step, so that the order of pieces of data of the block of data to be encoded by said current encoding step is different from the order of these pieces of data encoded by said previous encoding step, and wherein said permutation step implements the following sub-steps for said block of data:
• applying rotation to the data of said block of data;
• and
• inverting the order of the data of said block of data.