Patent ID: 6993085

Claim:
A method for encoding a source sequence of symbols ( u ) as an encoded sequence, comprising the steps of: performing a first operation of division into sub-sequences and encoding, consisting of dividing the source sequence ( u ) into p 1 first sub-sequences ( U i ) p 1 being a positive integer, and encoding each of the first sub-sequences ( U i ) using a first circular convolutional encoding method; performing an interleaving operation of interleaving the source sequence ( u ) into an interleaved sequence ( u *); and performing a second operation of division into sub-sequences and encoding, including dividing the interleaved sequence ( u *) into p 2 second sub-sequences (U′ i ), p 2 being a positive integer, and encoding each of the second sub-sequences ( U ′ i ) using a second circular convolutional encoding method, wherein at least one of the integers p 1 and p 2 being strictly greater than 1 and at least one of the first sub-sequences ( U i ) not being interleaved into any of the second sub-sequences ( U ′ j ).