Dynamically scaled LLR for an LDPC decoder
US8286048B1 · kind B1 · utility
29Cited by
3References
20Claims
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Key dates
| Filing date | Dec 30, 2008 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Jul 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/41
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for decoding an LDPC (low-density parity check) code word. The method includes receiving a plurality of LLR (log likelihood ratio) terms from a demodulation unit of a receiver and generating a scaling factor in accordance with at least one parameter descriptive of communication channel conditions for the receiver. The scaling factor is applied to each of the plurality of LLR terms to compute a corresponding plurality of scaled LLR terms. An iterative layered belief propagation algorithm is then executed by using the plurality of scaled LLR terms to generate decoded information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.