Forward error correction decoding method and apparatus for satellite digital audio radio broadcasting
US7577893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2006 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Feb 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/2948
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an improved decoding scheme for use in a concatenated channel decoder. In the present invention, the decoding of the concatenated code is done iteratively to increase the confidence for any corrected symbols. As a result, the overall performance of the decoder is improved. This iterative process comprises using a Maximal a posteriori (MAP) decoder which generates decoded information, to include Erasure Information. The output of the MAP decoder is then supplied to a Reed Solomon (RS) decoder, which attains better error correction performance by using this Erasure Information. This improved output of the RS decoder is then supplied back to the MAP decoder, thereby improving the performance of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.