Method and system for providing short block length low density parity check (LDPC) codes
US7673226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2007 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Mar 5, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0071
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An approach is provided for generating Low Density Parity Check (LDPC) codes. An LDPC encoder generates a short LDPC code by shortening longer mother codes. The short LDPC code has an outer Bose Chaudhuri Hocquenghem (BCH) code. According to another aspect, for an LDPC code with code rate of ⅗ utilizing 8-PSK (Phase Shift Keying) modulation, an interleaver provides for interleaving bits of the output LDPC code by serially writing data associated with the LDPC code column-wise into a table and reading the data row-wise from right to left. The above approach has particular application in digital video broadcast services over satellite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.