| 摘要 |
An approach is provided for generating Low Density Parity Check (LDPC) codes . An LDPC encoder (203) generates a LDPC code with an outer Bose Chaudhuri Hocquenghem (BCH) code. For 1/3 rate, the relevant parameters are as follows: q = 120, n ldpc = 64,800, k ldpc = n BCH = 21600, k BCH = 21408 (12 bit error correcting BCH). For 1/ 4 rate, the LDPC code has the following relevant parameters: q = 135, n ldpc = 64,800, k ldpc = n BCH = 16200, k BCH = 16008 (12 bit error correcting BCH). For 2/5 rate, the following parameters exist: q = 108, n ldpc = 64800, k ldpc = n BCH = 25920, k BCH = 25728 (12 bit error correcting BCH). The above approach has particular application in digital video broadcast service s over satellite.
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