| 摘要 |
PROBLEM TO BE SOLVED: To obtain a decoding device and a method for preventing an increase in circuit scale due to an increase in column weight of a parity check matrix, as well as a decrease in error correction capability due to padding or puncture. SOLUTION: An LDPC code decoding device includes: a reception LLR operation unit 520 which computes a reception LLR from a reception signal; a row operation unit 530 which performs row operation for each of a plurality of rows generated by dividing rows of the parity check matrix, by dividing a row operation into a plurality of operations, in the row operation to compute a row LLR from the reception LLR or a column LLR; a column operation unit 540 which computes a column LLR and an estimated bit string from the row LLR; and a repeated operation end determination circuit 550 which alternately repeats the row operation unit and the column operation unit, and ends the repeat when the repeat count reaches a predetermined value or the estimated bit string becomes a code word. COPYRIGHT: (C)2011,JPO&INPIT |
