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A method and device for phase ambiguity processing in an optical transmission network

An optical transmission network and phase ambiguity technology, applied in the field of communication, can solve the problems of high hardware complexity, strong filtering effect, low calculation accuracy, etc., and achieve the effect of flexible structure and improved processing accuracy.

Active Publication Date: 2020-07-24
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the wavelength division multiplexing system will bring many problems such as chromatic dispersion, polarization film dispersion, strong filtering effect, phase ambiguity and so on during the transmission process.
[0004] The phase ambiguity processing algorithm of traditional optical transmission network generally adopts differential decoding to eliminate phase ambiguity. However, traditional differential decoding will cause error diffusion and bring certain loss to system performance.
If these losses are to be corrected, the BJCR (named after the inventors, respectively, Bahl, Cocke, Jelinek and Raviv) method with high complexity is used to realize decoding, and then combined with forward error correction (Forward Error Correction, FEC ) for cascading and iterative operations, the complexity of hardware implementation is very high, and the resource consumption is large
[0005] At present, the mainstream phase ambiguity processing method is to use the training sequence TS (Training Sequence) known by the sending end and the receiving end to calculate whether phase ambiguity occurs. This calculation method is widely used, but this method also has obvious defects: it is not effective Judging whether the training sequence itself has phase ambiguity, the calculation accuracy is low, and it cannot effectively adapt to various application scenarios

Method used

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  • A method and device for phase ambiguity processing in an optical transmission network
  • A method and device for phase ambiguity processing in an optical transmission network
  • A method and device for phase ambiguity processing in an optical transmission network

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no. 2 example

[0102] In order to better reflect the purpose of the present invention, further illustrations are made on the basis of the first embodiment of the present invention.

[0103] Figure 4 It is a flow chart of the second embodiment of the method for phase ambiguity processing in the optical transmission network of the present invention, and the method includes:

[0104] Step 200: Determine whether phase ambiguity occurs in the training sequence TS1, if not, execute step 201; if yes, skip to step 202.

[0105] In the embodiment of the present invention, three adjacent training sequences (TS1, TS2, TS3) are used to judge whether phase ambiguity occurs in the training sequence TS2, wherein whether the phase ambiguity occurs in the training sequence TS1 has been determined. When the phase ambiguity of the training sequence itself and the phase ambiguity of the data between the training sequences TS occur, the compensation factors of three adjacent training sequences (TS1, TS2, TS3) ...

no. 3 example

[0141] With respect to the method of the embodiment of the present invention, the embodiment of the present invention also provides a device for phase ambiguity processing in an optical transmission network. Figure 10 It is a schematic diagram of the first component structure of the device for phase ambiguity processing in the optical transmission network according to the embodiment of the present invention, as shown in Figure 10 As shown, the device includes an acquisition module 300, a judgment module 301 and a compensation module 302; wherein,

[0142] The obtaining module 300 is located at the receiving end, and is used for obtaining the training sequence TS.

[0143] The judging module 301 is configured to notify the compensation module when it is determined that phase ambiguity occurs in the training sequence TS according to a preset phase ambiguity detection method.

[0144] The compensation module 302 is configured to use the compensation factor of the previous trai...

no. 4 example

[0159] In order to better reflect the purpose of the present invention, further illustrations will be made on the basis of the third embodiment of the present invention.

[0160] Figure 11 It is a schematic diagram of the second component structure of the device for phase ambiguity processing in the optical transmission network according to the embodiment of the present invention, as shown in Figure 11 As shown, the device includes a detection module 400, a first processing module 401 and a second processing module 402; wherein,

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Abstract

Disclosed in embodiments of the present invention are a data processing method and apparatus, and a computer storage medium. The method comprises: obtaining a training sequence; and according to a preset phase ambiguity detection method, when it is determined that phase ambiguity occurs on the training sequence, compensating data between a previous training sequence of the training sequence and the training sequence by using a compensation factor of the previous training sequence, and compensating data between a next training sequence of the training sequence and the training sequence by using a compensation factor of the next training sequence.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for phase fuzzy processing in an optical transmission network. Background technique [0002] In the development of transmission technology, optical fiber has proved to be an indispensable medium. How to use the least amount of optical fiber to transmit the most abundant information, out of this exploration, the development of optical transmission has basically gone through the following stages: space division multiplexing (Space Division Multiplexing, SDM), time division multiplexing (Time Division Multiplexing, TDM) and wavelength division multiplexing stage (Wavelength Division Multiplexing, WDM). [0003] Up to now, the optical transmission is still dominated by the wavelength division multiplexing system. With the development of communication technology, the current commercial 40G WDM transmission has gradually evolved to 100G and 400G WDM transmi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/61H04J14/02
CPCH04B10/6165H04J14/02H04B10/61H04L25/02
Inventor 刘卓周晏陈欢
Owner SANECHIPS TECH CO LTD