Method and apparatus optimizing determination level of optical receiver

一种判决电平、光接收机的技术，应用在光通信领域，能够解决影响系统稳定性和可靠性等问题，达到避免震荡现象、实现简单的效果

Active Publication Date: 2009-02-04
ZTE CORP
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Problems solved by technology

[0008] The present invention provides a method and device for optimizing the decision level of an optical receiver, which is used to solve the problem of affecting the stability and reliability of the system existing in the real-time adjustment of the decision level during the operation of the optical communication system in the prior art

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  • Method and apparatus optimizing determination level of optical receiver
  • Method and apparatus optimizing determination level of optical receiver
  • Method and apparatus optimizing determination level of optical receiver

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Embodiment Construction

[0029] The main technical concept of the present invention is to optimize and adjust the decision level of the optical receiver based on the error rate before forward error correction before the equipment leaves the factory and when the service is opened, and obtain the best value corresponding to the minimum bit error rate before forward error correction. Optimum decision level value, thereby avoiding the oscillation caused by frequent adjustment of the decision level when the optical receiver is in normal operation.

[0030] see figure 1 , this figure is a flow chart of the realization principle of the method for optimizing the decision level of the optical receiver described in the present invention, which mainly includes steps:

[0031] Step 10, determine that the system parameters of the optical receiver are within the normal range and remain unchanged, determine the maximum value and minimum value of the adjustment range of the decision level, and determine the step size...

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Abstract

The invention discloses a method and a device optimizing determining power level of an optical receiver, and is used for solving the problem of affecting system stability and reliability and the problem exists in a mode of real-time adjustment to the determining power level of the prior art during the running process of an optical communication system. The method comprises the steps: adjusting determining power level value in the adjusting range of the determining power level; respectively detecting corresponding former FEC BER of different determining power level values; and finding the minimum value in the detected former FEC BER, and the corresponding determining power level value is the best determining power level value. The device comprises a determining power level adjustment unit, a former FEC BER detecting unit, a determining power level control unit and a best determining power level determining unit. The realization of the invention is simple, and the invention avoids turbulence phenomenon caused by frequent adjustment of the determining power level when the optical receiver is in the case of the normal work.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a method and device for optimizing the decision level of an optical receiver. Background technique [0002] In the optical communication system, the optical transmitter at the sending end converts the digital electrical signals of 0 and 1 into optical signals for transmission in the optical fiber, and the optical receiver at the receiving end undergoes photoelectric conversion to restore the digital electrical signals of 0 and 1. Ideally, the decision level of the optical receiver is at the average value, that is, at 50%, and the 0 and 1 signals can be accurately judged. However, due to the influence of factors such as noise and fiber nonlinear effects during long-distance transmission, signal 1 and signal 0 are distorted. Therefore, it is necessary to adjust the judgment level of the optical receiver to accurately judge 0 and 1 signals. [0003] At present, an FEC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/158H04L1/24H04B10/43
CPCH04B10/695H04B10/60H03M13/03
Inventor 彭肖
Owner ZTE CORP
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