Bch code decoder and method for decoding a bch code

Details Bch code decoder and method for decoding a bch code Bch code decoder and method for decoding a bch code

H - Electricity

03

M

354/67

H03M 13/00 (2006.01) H03M 13/15 (2006.01)

Patent

CA 2031643

There is disclosed a BCH code decoder for correcting a natural number N of error bits occurring in a code sequence composed of bits encoded by a BCH encoding method, and a method therefor. In the BCH code decoder and the BCH decoding method, first to N-th syndromes are generated from an inputted code sequence encoded by the BCH encoding method, respectively, and first to N-th check codes are generated by subtracting predetermined syndromes to be calculated when an error occurs at a predetermined bit of said code sequence from said first to N-th syndromes, respectively. Thereafter, error correction information is generated when a number of error bits represented by said first to N-th syndromes is equal to the sum of one and a number of error bits represented by said first to N-th check codes, and one or more error bits of said inputted code sequence are corrected according to said error correction information, thereby outputting the decoded code sequence.

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