Method for optimally adjusting a decision level of a receiver and device thereof
First Claim
1. A method for optimally adjusting a decision level of a receiver, including:
- monitoring optical power received by an optical receiver;
determining whether the variation amplitude of the optical power is greater than a predefined value;
if yes, then updating a current initial value of the decision level according to the optical power;
obtaining an error signal of a transmitted signal from the output end of the optical receiver;
determining whether the decision level needs adjusting according to the error signal;
if yes, then further analyzing the error signal according to the current initial value to obtain the result of the analysis;
otherwise, exiting the execution program directly; and
adjusting the decision level from the current initial value according to the result of the analysis.
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Abstract
The present invention discloses a method and a device for optimally adjusting the decision level of a receiver, wherein the method includes: monitoring optical power received by an optical receiver; determining whether the variation amplitude of the optical power is greater than a predefined value; if yes, then updating a current initial value of the decision level according to the optical power; obtaining an error signal of a transmitted signal from the output end of the optical receiver; determining whether the decision level needs adjusting according to the error signal; if yes, then further analyzing the error signal according to the current initial value to obtain the result of the analysis; otherwise, exiting the execution program directly; and adjusting the decision level from the current initial value according to the result of the analysis. By monitoring the received optical power and setting the initial value of the decision level according to the received optical power, the method and the device avoid the interruption in the system service caused by a long search for the initial value of the decision level due to the variation of the optical power and thus greatly improve the stability of the system.
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Citations
10 Claims
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1. A method for optimally adjusting a decision level of a receiver, including:
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monitoring optical power received by an optical receiver; determining whether the variation amplitude of the optical power is greater than a predefined value;
if yes, then updating a current initial value of the decision level according to the optical power;obtaining an error signal of a transmitted signal from the output end of the optical receiver; determining whether the decision level needs adjusting according to the error signal;
if yes, then further analyzing the error signal according to the current initial value to obtain the result of the analysis;
otherwise, exiting the execution program directly; andadjusting the decision level from the current initial value according to the result of the analysis. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device for optimally adjusting a decision level of a receiver, including:
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a received power monitoring module for monitoring optical power received by an optical receiver; an initial value setting module which is connected with the received power monitoring module to compare the optical power with a predefined value and re-adjust and re-set a current initial value of the decision level according to the result of the comparison; an error signal obtaining module which is connected with the output end of the optical receiver to obtain an error signal of a transmitted signal from the optical receiver; an error signal analyzing module which is connected with the error signal obtaining module to determine whether the decision level needs adjusting according to the error signal and analyze the error signal to obtain a result of the analysis; and a decision level adjusting module which is connected with the error signal analyzing module to adjust the decision level of the optical receiver from the current initial value according to the result of the analysis. - View Dependent Claims (8, 9, 10)
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Specification