Method for updating check node in low density parity check decoder
US7930620B2 · kind B2 · utility
8Cited by
5References
10Claims
0Family size
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Key dates
| Filing date | Oct 4, 2006 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Feb 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/1117
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method is provided for updating a check node in a low density parity check (LDPC) decoder, including: transmitting log-likelihood ratio (LLR) messages from variable nodes to a plurality of check nodes; decomposing the LLR messages in a plurality of node messages for each check node; and updating each check node using a modified function g(x), which is a function g′(x) comprising a sum operation of exponential functions based on the node messages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.