Systems and methods for communication system control utilizing corrected forward error correction error location identifiers
US7962049B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2007 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Feb 18, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0066
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides systems and methods for communication system control utilizing corrected forward error correction (FEC) error location identifiers in multi-level modulation scheme systems. The present invention utilizes precise error correction information, available for each FEC block of a particular code (including, but not limited to, block codes and concatenated block codes employing iterative decoding as well as convolutional codes (including turbo codes) and low-density parity-check code (LDPC) class codes) used (e.g., Bose, Ray-Chaudhuri, Hocquenghem (BCH), Reed-Solomon, etc.), as a result of the FEC decoding process to provide feedback to close the loop for control of a demodulator (i.e., receiver). Each error location can be uniquely traced back to a particular sub-rate signal path, with running, post-FEC corrected BER (bit error rate) calculations generated on each sub-rate signal. Advantageously, this provides the ability to adjust thresholds and various other parameters to achieve and maintain error-free operation quickly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.