METHOD FOR PARALLEL CONCATENATED TAIL-BITING CONVOLUTIONAL CODING AND DECODING, CODER AND DECODER OF COMPOSITE CODES, CODER AND DECODER SYSTEM

摘要

The present invention relates to a method for parallel-concatenated, spiral coding, in which a pipe bit of data bits is passed to a composite codeword coder (10) comprising N-number codewords (12) and N-1 interleavers (14) concatenated and the codeword of the data bits. (10) encoding a first subword consisting of data bits and parity bits by a non-returning system spiral code (12) terminating on a first subword coding horse (12), permuting the data bit into a pipework with a data bit interleaver, bit core is passed to a subsequent sub-codeword (12), from which it is encoded with a terminating, non-returning system spiral code, thereby generating a second sub-word consisting of data bits and parity bits, the above coding and intervening steps encoder on the additional N-2 subword encoder (12) and N-2 interleaver (14), on the other, from data bits and parity bits l is created by heating stem words, and finally the subwords consisting of data bits and parity bits are formatted into a complex codeword. In another aspect, the present invention provides a concatenated, concatenated, spiral decoding method in which a sub-word concatenating a composite codeword, an N-part decoder, and an N-1 subcomponent lead to a sub-word decoder corresponding to the beer order, which sub-decoder is further provided with a temporary information corresponding to the probability value of the data bits, in the sub-word titration mode, in the N-part decoder and in the N-1 interleaver, temporary order information corresponding to the probable value of a data bit is formed for each data bit with each of the N-1 inserts, the temporary information formed on the previous sub-word decoder is passed to the next sub-decoder, and thus the temporary sub-information is formed. the probability of two possible values of a bit is first approximated by one form, and then in the next approximation steps the condition is determined by one of the Nth subword decoders and one of the first Nth decoder decoders. wherein: per azegyes sub word decoders temporary infőrmációcsőpőrtőkat azideiglenes Información ordinal skilled previous sub word decoder elsőfüggvénye to form, with a terminating the number N-1 közbeiktatásőkatfőrdítőtt order, second interleavers according to terminate közbeiktatásőkatfőrdítőtt order feed back of the N-1 stage interleavers-megszüntetőről first function -