Error correction improvement for concatenated codes
US7146553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2002 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Sep 25, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/2927
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An enhanced forward error correction system is disclosed. Transmitted data is encoded into codewords in multiple dimensions. The decoding of received data by a decoder is performed in multiple passes in each dimension, with corrected data provided as an output from each pass into another decoder for the next decode pass. The encoder in one embodiment comprises a parallel inner RS(247,239) encoder or encoders and parallel outer BCH(255,247) encoder or encoders. Additional steps are added for error multiplication reduction. The system provides an approach to detect generally uncorrectable patterns for concatenated codes and provides a correction mechanism for improving error correction performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.