Selectively applied hybrid min-sum approximation for constraint node updates of LDPC decoders
US8156409B2 · kind B2 · utility
21Cited by
6References
21Claims
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Key dates
| Filing date | Feb 29, 2008 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Feb 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/6583
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In accordance with one or more embodiments, a decoder may determine whether a lowest reliability value of a plurality of codeword bits that correspond to a particular output reliability value for a particular constraint node of a parity-check matrix is greater than a threshold value (e.g., an offset), and if so, selectively applies a modified min-sum approximation constraint node update with a reliability value modification (e.g., an offset or normalized min-sum approximation).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.