Back to results
US 2010/0303457 A1Published application
Signal quality detector
AssigneeNokia Siemens Networks Oy
InventorsErich Gottwald, Werner Paetsch
Life of this patent
Estimating the term…
Abstract
In the signal quality detector (7, 8, 10), a 3R-regenerated electrical received signal (REDS) is correlated with a non-regenerated received signal (EDS). The result is a direct measure of the correlation between non-regenerated and regenerated received signals and can be used for controlling a PMD-compensator (3).
Claims8
A signal quality detector, particularly for a PMD compensator, which is supplied with an optical received signal (ODS) converted into an electrical received signal (EDS), characterized by
- a 3R regenerator (10) which regenerates the electrical received signal (EDS) and outputs a regenerated received signal (REDS), a correlator (8) which is supplied with the electrical received signal (EDS) and the regenerated electrical received signal and which outputs a correlation signal (KAS) which is rated as a measure of the difference or match between the regenerated received signal (REDS) and the nonregenerated electrical received signal (EDS).
The use of a signal quality detector as claimed in one of the preceding claims, characterized
- in that it is used for controlling a PMD compensator (3), a dispersion compensator or for tuning a transmission laser.
Dependencies are inferred from the claim text.