| US 7,500,172 B2 | ||
| AMP (accelerated message passing) decoder adapted for LDPC (low density parity check) codes | ||
| Ba-Zhong Shen, Irvine, Calif. (US); Hau Thien Tran, Irvine, Calif. (US); and Kelly Brian Cameron, Irvine, Calif. (US) | ||
| Assigned to Broadcom Corporation, Irvine, Calif. (US) | ||
| Filed on Oct. 31, 2005, as Appl. No. 11/262,574. | ||
| Claims priority of provisional application 60/656566, filed on Feb. 26, 2005. | ||
| Prior Publication US 2006/0195754 A1, Aug. 31, 2006 | ||
| Int. Cl. H03M 13/45 (2006.01) | ||
| U.S. Cl. 714—780 | 20 Claims |
| 17. A method for decoding an LDPC (Low Density Parity Check) coded signal, the method comprising:
calculating a second soft bit information corresponding to a second square sub-matrix using a first soft bit information corresponding
to a first square sub-matrix, wherein a column, of a parity check matrix that corresponds to a generator matrix employed to
generate the LDPC coded signal, includes the first square sub-matrix and the second square sub-matrix; and
performing iterative error correction decoding of the LDPC coded signal to generate a best estimate of at least one information
bit that has been encoded into the LDPC coded signal.
|