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Electronic dispersion compensation method, device and system in burst mode

A burst mode, electrochromic technology, applied in the field of optical communication, can solve the problem of lack of EDC method, and achieve the effect of rapid convergence

Inactive Publication Date: 2013-09-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides an electrical dispersion compensation method, device and system in burst mode, which solves the lack of an EDC method for burst mode in the prior art

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  • Electronic dispersion compensation method, device and system in burst mode
  • Electronic dispersion compensation method, device and system in burst mode
  • Electronic dispersion compensation method, device and system in burst mode

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Embodiment Construction

[0024] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0025] figure 1 The schematic flow chart of the first method provided by the embodiment of the present invention includes:

[0026] Step 11: The EDC compensation device determines the current working mode of the ONU, and the current working mode is a normal working mode or an initializing working mode.

[0027] In the embodiment of the present invention, the ONU is divided into two working modes, including an initializing working mode and a normal working mode. The initializing working mode means that the ONU works in the registration and ranging state, and the ONU has not yet obtained the media access control layer of the OLT. The id assigned by the (Media Access Control, MAC) entity, or the ONU has obtained the id but the EDC compensation device at the OLT end has not yet obtained the initial coefficient through the...

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Abstract

The invention discloses an electronic dispersion compensation method, an electronic dispersion compensation device and an electronic dispersion compensation system in a burst mode. The method comprises the following steps of: determining the current working mode of an optical network unit (ONU), wherein the current working mode is a normal working mode or an initialization working mode; obtaining an initial value of a filter coefficient in the current working mode, wherein the initial value of the filter coefficient in the initialization working mode is a preset random value and the initial value of the filter coefficient in the normal working mode is a final value of the filter coefficient in the initialization working mode; receiving data sent by the ONU and filtering the data sent by the ONU by adopting the initial value of the filter coefficient in the current working mode so as to obtain the data subjected to electronic dispersion compensation (EDC). The embodiment of the invention can realize electronic dispersion compensation in the burst mode.

Description

technical field [0001] The invention relates to optical communication technology, in particular to an electrical dispersion compensation method, device and system in a burst mode. Background technique [0002] The optical communication technology using optical fiber is increasingly occupying an important position in the wired access technology, and the cost of optical network products needs to be continuously reduced in the optical communication technology. In a Passive Optical Network (Passive Optical Network, PON) system, multiple Optical Network Units (Optical Network Units, ONUs) may share one Optical Line Termination (Optical Line Termination, OLT). In order to reduce the cost of the ONU, FP (Fabry-Perot) lasers can be used instead of distributed feedback (Distributed Feedback, DFB) lasers as the transmitting module. However, the data sent to the OLT using the FP laser as the transmitting module will have a large Large jitter (that is, the existence of electric dispers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2507H04Q11/00H04B10/2525
Inventor 付生猛李胜平弗兰克·埃芬博格
Owner HUAWEI TECH CO LTD