Abstract: A method of communication in a Multi-Carrier transmission network including plural mobile terminals. The method includes dynamically assigning subgroups of spreading sequences of a set of spreading sequences to each of the mobile terminals. Each of the subgroups includes different spreading sequences than in other subgroups, and each of the subgroups of spreading sequences includes a first spreading sequence and at least one other spreading sequence.

Abstract: The present invention concerns a method for obtaining an error correcting code of a given first size (N), including a systematic information part of a given second size (K) and a redundancy part. A block turbo-code is first obtained from said systematic information part and from predetermined information elements provided at known locations, said block turbo-code consisting in a product of elementary systematic block codes, at least said predetermined information elements being removed from the obtained block turbo-code to produce a shortened block turbo-code. An additional error correcting code is derived from at least a portion of said shortened block turbo-code and said shortened block turbo-code is stuffed with stuffing elements so as to attain said given first size, said stuffing elements being information elements of said additional error correcting code.

Abstract: The present invention concerns a device and a method of dynamically assigning subgroups of spreading sequences of a set of spreading sequences to mobile terminals of a Multi-Carrier transmission network, characterised in that each subgroup comprises different spreading sequences than the spreading sequences comprised in other subgroups, each subgroup of spreading sequences comprising a first spreading sequence and at least one other spreading sequence, each element of the first spreading sequence being, by the mobile terminal of which the first spreading sequence has been assigned, multiplied by pilot symbols to be transmitted and then transmitted on a corresponding sub-carrier and each element of the at least one other spreading sequence being, by the mobile terminal of which the spreading sequence has been assigned, multiplied by data symbols to be transmitted and then transmitted on a corresponding sub-carrier. The method comprises also the equalization device and the method associated.

Abstract: A method of improving turboencoding by re-encoding erroneous information and subtracting their contribution at the input of the turboencoder. The subtraction of this contribution remedies the lack of convergence or convergence towards erroneous solutions observed in certain turbodecoding configurations. The method also applies to parallel concatenation turbodecoding, to serial concatenation turbodecoding, or to block turbodecoding. Different operations result according to the type of feedback envisaged.

Abstract: The present invention concerns a method for obtaining an error correcting code of a given first size (N), including a systematic information part of a given second size (K) and a redundancy part.

Abstract: Turbodecoding method with re-encoding of erroneous information and feedback The invention in general terms relates to a method of improving turbodecoding by re-encoding erroneous information and subtracting their contribution at the input of the turbodecoder. The subtraction of this contribution remedies the lack of convergence or convergence towards erroneous solutions observed in certain turbodecoding configurations. The invention applies equally well to parallel concatenation turbodecoding, to serial concatenation turbodecoding or to block turbodecoding. Several embodiments are presented according to the type of feedback envisaged.