US 8,913,650 B2Granted

Measuring bit-error-rates of forward error correction code encoded signals

AssigneeVerizon Patent and Licensing Inc.

InventorsJames M. Cervenka, John Fasolino, Steven Franks, Stephen Clark, Tiejun J. Xia

Life of this patent

Estimating the term…

Loading patent…

Abstract

A device may include one or more components and a processor. The one or more components may obtain bit-error-rates of a signal and signal-to-noise ratios of the signal. The processor may select a target signal-to-noise ratio for the signal, determine a target noise level based on the target signal-to-noise ratio, set a noise level of the signal to the target noise level, determine a signal-to-noise ratio of the signal via the one or more components, adjust the noise level of the signal based on the determined signal-to-noise ratio, to stabilize the signal-to-noise ratio, determine a bit-error-rate of the signal via the one or more components, and record the bit-error-rate.

Claims10

Dependent claims

A device comprising:

one or more components configured to:
obtain, from a bit-error-rate analyzer, bit-error-rates of a signal, via a network interface, and
obtain, from an optical signal analyzer, signal-to-noise ratios of the signal, via the network interface;
a user interface configured to:
receive a user-specified range of signal-to-noise ratio of the signal;
and
a processor configured to:
select, from the user-specified range, a target signal-to-noise ratio for the signal,
determine a target noise level based on the target signal-to-noise ratio,
set a noise level of the signal to the target noise level,
determine a signal-to-noise ratio of the signal via the one or more components,
adjust the noise level of the signal, by an amount determined based on a difference between a noise level of the determined signal-to-noise ratio and the target noise level, to stabilize the determined signal-to-noise ratio within a particular level of tolerance with respect to the target signal-to-noise ratio,
determine, responsive to the stabilization of the determined signal-to-noise ratio within the particular level of tolerance, a bit-error-rate of the signal via the one or more components, and
record the determined bit-error-rate.

11 more elements

A device comprising:

one or more components to obtain bit-error-rates of a signal, signal-to-noise ratios of the signal, and noise levels of the signal;
and
a processor configured to:
obtain, via a user interface associated with the device, a user-specified range of signal-to-noise ratio,
select, from the user-specified range, a target signal-to-noise ratio for the signal,
determine a target noise level based on the target signal-to-noise ratio,
set a noise level of the signal to the target noise level,
determine a noise level of the signal via the one or more components,
receive, via the user interface, a first user-specified level of accuracy for the noise level of the signal,
adjust the noise level of the signal, based on a difference between the determined noise level and the target noise level, to within the first user-specified level of accuracy, to stabilize a signal-to-noise ratio of the signal,
receive, via the user interface, a second user-specified level of accuracy for a power level of the signal,
control a variable optical attenuator that attenuates the signal, to adjust the power level of the signal to within the second user-specified level of accuracy,
obtain, via the one or more components, the signal-to-noise ratio,
determine whether the obtained signal-to-noise ratio is maintained within a particular tolerance level of the target signal-to-noise ratio,
determine, responsive to a determination that the obtained signal-to-noise ratio is maintained within the particular tolerance level of the target signal-to-noise ratio, a bit-error rate of the signal via the one or more components, and
record the bit-error-rate.

13 more elements

Dependencies are inferred from the claim text.