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Title:
光受信器識別閾値の最適化方法及び装置
Document Type and Number:
Japanese Patent JP5149996
Kind Code:
B2
Abstract:
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.

Inventors:
Peng Xiao
Application Number:
JP2011527181A
Publication Date:
February 20, 2013
Filing Date:
July 24, 2009
Export Citation:
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Assignee:
ZTE CORPORATION
International Classes:
H04B10/69; H04B10/43
Domestic Patent References:
JP2000341344A
JP2004172783A
JP2007150485A
JP2006180506A
JP2003348019A
Attorney, Agent or Firm:
Kenzo Hara International Patent Office