METHOD OF INFORMATION ENCODING-DECODING IN DATA TRANSMISSION SYSTEMS Russian patent published in 2015 - IPC H03M13/29 H04L1/00 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to electric communication and can be used for digital data transmission. The method consists in that on the transmitting side to the initial message the cyclic checksum (CRC) is added, the resulted block is coded by noiseproof external code and internal code, originally to the communication channel all information bits are transmitted, then CRC bits are transmitted, then the coding results are transmitted to the channel: test bits of external code and test bits of BCH internal code, after receiving of information sequence of bits on the reception side, they are used for CRC calculation and check, in case of positive result the message is transmitted to a recipient, otherwise the error blocks are corrected by external code, the latter is the parity check unit, for this purpose j^th block of k bits is restored by means of the parity block then the resulted sequence is checked by CRC, in case of positive result of check the received message is transmitted to the recipient, and in case of negative result - the procedure of restoration of blocks is repeated, until all J blocks are checked, in case of absence of positive result the operation of error correction by internal code is performed, for this purpose j^th information k-bit sequence is united with j^th test sequence of BCH code, j^th block is decoded, after correction of revealed errors the CRC check procedure is repeated, and in case of negative result the operation of correction of errors in subsequent blocks up to j = J is continued.

EFFECT: decrease of time of transmission of messages.

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