Signal identification method

Details Signal identification method Signal identification method

2005-09-24

2009-11-24

Pascal, Leslie (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S095000, C398S202000, C398S209000

Reexamination Certificate

active

07623790

ABSTRACT:
A signal identification method for efficiently identifying Dense Wavelength Division Multiplexing (DWDM) channel modulation formats, signal powers, and center frequency detuning of signals that may be used in conjunction with telecom-grade monitoring equipment. The method utilizes least-square curve fitting estimates applied to a set of curves, each curve is characteristic of a modulation format and rate. For each least-square estimate an error value is calculated, and a curve fit with the least error is selected as the identified signal format for a signal.

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