Receiving apparatus and setting method
AssigneeFujitsu Limited
InventorTaizo MAEDA
Life of this patent
Estimating the term…
Abstract
A receiving apparatus includes a first processor configured to compensate, in a perturbation back-propagation (PBP) scheme, waveform degradation of an optical signal by traveling an optical transmission line due to a nonlinear optical effect; a memory; and a second processor coupled to the memory and the second processor configured to change a gamma coefficient to be used in the PBP scheme, measure reception quality of the optical signal for each of gamma coefficients obtained by the changing, specify a gamma coefficient in accordance with the reception quality from among the gamma coefficients obtained by the changing, and set the specified gamma coefficient as a parameter of the PBP scheme.
Claims9
A receiving apparatus comprising:
- a first processor configured to compensate, in a perturbation back-propagation (PBP) scheme, waveform degradation of an optical signal by traveling an optical transmission line due to a nonlinear optical effect;
- a memory;
- and
- a second processor coupled to the memory and the second processor configured to
- measure reception quality of the optical signal for each of different gamma coefficients in the PBP scheme,
- specify one gamma coefficient in accordance with the reception quality from among the different gamma coefficients obtained by the measuring, and
- set the specified gamma coefficient as a parameter of the PBP scheme.
A receiving apparatus comprising:
- a first processor;
- a memory;
- and
- a second processor coupled to the memory,
- wherein the first processor is configured to compensate, in a nonlinear polarization crosstalk canceller (NPCC) scheme, waveform degradation of an optical signal from an optical transmission line due to a nonlinear optical effect,
- wherein the second processor is configured to provide averaging lengths to be used in the NPCC scheme to the first processor,
- wherein the first processor is configured to measure reception quality of the optical signal for each of averaging lengths provided by the second processor, and
- wherein the second processor is configured to
- specify one averaging length in accordance with the reception quality from among the averaging lengths obtained by the measuring, and
- set the specified averaging length as a parameter of the NPCC scheme.
A setting method to be executed by a computer provided in a receiving apparatus configured to compensate, in a nonlinear polarization crosstalk canceller (NPCC) scheme, waveform degradation of an optical signal from an optical transmission line due to a nonlinear optical effect, the setting method comprising:
- measuring reception quality of the optical signal for each of averaging lengths in the NPCC;
- specifying one averaging length in accordance with the reception quality from among the averaging lengths obtained by the measuring;
- and
- setting the specified averaging length as a parameter of the NPCC scheme.
Dependencies are inferred from the claim text.