Adaptive desaturation in min-sum decoding of LDPC codes
US9755666B2 · kind B2 · utility
2Cited by
2References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2015 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Nov 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/658
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system implements adaptive desaturation for the min-sum decoding of LDPC codes. Specifically, when an-above threshold proportion of messages from check nodes to variable nodes (CN-to-VN messages) are saturated to a maximum fixed-precision value, all CN-to-VN messages are halved. This facilitates the saturation of correct messages and boosts error correction over small trapping sets. The adaptive desaturation approach reduces the error floor by orders of magnitudes with negligible add-on circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.