Message-passing and forced convergence decoding method
US8468436B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2008 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Feb 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/658
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to an iterative decoding method of the message-passing type for decoding an error correcting code susceptible of representation by a bipartite graph including a plurality of variable nodes and a plurality of control nodes, said messages being expressed in terms of a log likelihood ratio. At each iteration of a plurality of decoding iterations, for each pair consisting of a variable node and a control node, a change is detected in the sign of the extrinsic information intended to be transmitted (αmntemp) as a message by said variable node to said control node relative to that transmitted (αmn) at the previous iteration, and in the event of a sign change, said extrinsic information is subjected to an amplitude reduction operation (Fred) before it is transmitted to the control node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.