| 摘要 |
<p>A method and apparatus for optimizing a decision threshold of an optical receiver is used to solve a problem of affecting system stability and reliability, which exists in the prior art method for adjusting the decision threshold in real-time in a large range during operation of an optical communication system. The method comprises: determining a maximum value and a minimum value of an adjustment range of the decision threshold, and determining an adjustment step of the decision threshold (10); adjusting a decision threshold value within the adjustment range of the decision threshold, and separately detecting pre-FEC BERs corresponding to different decision threshold values (11); and searching for a minimum value in the detected pre-FEC BERs, a decision threshold value corresponding to the minimum value being an optimal decision threshold value (12). The apparatus comprises a decision threshold adjusting unit, a pre-FEC BER detecting unit, a decision threshold control unit and an optimal decision threshold determining unit. The present invention is simple to implement, avoiding shock phenomena caused when the optical receiver adjusts the decision threshold frequently in service bearing working condition.</p> |
