Method and device for forward error correction decoder system utilizing orthogonality of an H matrix
US9742439B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 2015 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Jun 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/616
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for a quasi-cyclic low density parity check (QC-LDPC) decoder utilizes a parity check matrix (H matrix) having a matrix value for each row and column position in the matrix. Each matrix value is associated with an initial soft information element where, for each one of the matrix values associated with a constrained row, the one of the matrix values is constrained to a set of constraint values associated with a set of initial soft information elements. The set of initial soft information elements excludes a number of soft information elements that immediately precede a first initial soft information element. The first initial soft information element is associated with a selected first matrix value associated with a first row that immediately precedes the constrained row, and with the same column as the one of the matrix values in the constrained row.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.