Adaptive desaturation in min-sum decoding of LDPD codes
US10177786B2 · kind B2 · utility
1Cited by
2References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2017 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Aug 1, 2037 |
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.