Forward error correction assisted receiver optimization
US5896391A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1996 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Dec 19, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0337
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for recovering an outgoing data signal from an incoming signal received over a transmission network. The method provides for preparing a bit error rate (BER) map for a data regenerator, determining, on the BER map, an optimal operation point for a provisioned BER.sub.prov value, and monitoring the data regenerator to function in the optimal operation point for providing a regenerated data signal. In addition, the errors in the regenerated data signal may be further corrected using current forward error correction circuitry. To prepare a BER map, the data regenerator operates in an error mapping mode, wherein the incoming signal is decoded using a slicing level V.sub.i and a phase shifted clock signal CL.sub.j. Each value BER.sub.i,j is measured over a preset period of time T.sub.prov for a pair V.sub.i, .phi..sub.j and stored in a memory. The BER maps may be prepared once a day or at any other suitable interval. In the optimization mode, the operation point for the regenerator is calculated for a BER contour corresponding to the provisioned BER.sub.prov, for determining the coordinates V.sub.opt and .phi..sub.opt. In the data regeneration mode, the regenerated data signal …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.