Monitoring apparatus and method for an optical signal-to-noise ratio and receiver
AssigneeFujitsu Limited
InventorsLiang Dou, Zhenning Tao
Life of this patent
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Abstract
A monitoring apparatus and method for an optical signal-to-noise ratio and a receiver, where the apparatus includes: a processing unit configured to perform nonlinear processing on a pilot signal in received signals, or on a pilot signal in received signals and data signals in a predefined range neighboring the pilot signal; and a calculating unit configured to calculate an optical signal-to-noise ratio of the received signals according to a result of the nonlinear processing. Complexity of calculation may be lowered and accuracy of calculation of an optical signal-to-noise ratio may be improved, thereby efficiently improving the performance of the system.
Claims9
A monitoring apparatus for an optical signal-to-noise ratio, comprising:
- a processing unit configured to perform nonlinear processing on one of a pilot signal in received signals and the pilot signal in the received signals and data signals in a predefined range neighboring the pilot signal;
- and
- a calculating unit configured to calculate an optical signal-to-noise ratio of the received signals according to a result of the nonlinear processing.
A monitoring method for an optical signal-to-noise ratio, comprising:
- performing nonlinear processing on one of a pilot signal in received signals and the pilot signal in the received signals and data signals in a predefined range neighboring the pilot signal;
- and
- calculating an optical signal-to-noise ratio of the received signals according to a result of the nonlinear processing.
Dependencies are inferred from the claim text.