System and method for adjusting soft decision thresholds in a soft-decision error correction system
US7363553B2 · kind B2 · utility
4Cited by
7References
25Claims
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Key dates
| Filing date | Oct 22, 2004 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Dec 20, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/45
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The soft decision thresholds in a soft decision forward error correction (FEC) system may be adjusted based on mutual information of a detected signal. In one embodiment, a recursive algorithm may be used to optimize threshold values by maximizing the mutual information. In another embodiment, an adaptive scheme may be used to optimize threshold values based on a pre-knowledge of the noise in the channel. In a further embodiment, an adaptive scheme may be used to optimize threshold values by without pre-knowledge of the noise in the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.