| US 7,499,490 B2 | ||
| Encoders for block-circulant LDPC codes | ||
| Dariush Divsalar, Pacific Palisades, Calif. (US); Aliazam Abbasfar, Cupertino, Calif. (US); Christopher R. Jones, Pacific Palisades, Calif. (US); Samuel J. Dolinar, Sunland, Calif. (US); Jeremy C. Thorpe, Redlands, Calif. (US); Kenneth S. Andrews, Pasadena, Calif. (US); and Kung Yao, Sherman Oaks, Calif. (US) | ||
| Assigned to California Institute of Technology, Pasadena, Calif. (US); and The Regents of the University of California, Oakland, Calif. (US) | ||
| Filed on Jun. 24, 2005, as Appl. No. 11/166,041. | ||
| Prior Publication US 2006/0291571 A1, Dec. 28, 2006 | ||
| Int. Cl. H04B 1/66 (2006.01) | ||
| U.S. Cl. 375—240 [375/254; 375/271; 375/302; 341/51; 341/74; 714/758; 714/800] | 28 Claims |
| 21. An encoding apparatus to encode input symbols in accordance with a block-circulant low density parity check (LDPC) code,
the apparatus comprising:
a plurality of recursive convolutional encoders, each recursive convolutional encoder comprising storage units, multipliers
and adders to encode the input symbols; and
a plurality of circulant patterns to be fed to the recursive convolutional encoders, one set of patterns for each recursive
convolutional encoder.
|