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Frequency offset estimation method and device in optical transmission network

An optical transmission network and frequency offset estimation technology, applied in the field of frequency offset estimation, can solve the problems of low processing efficiency and achieve the effects of fast convergence speed, self-adaptive precision, and accurate frequency offset estimation

Active Publication Date: 2019-04-30
SANECHIPS TECH CO LTD
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

Compared with the currently used 40G DSP, the processing speed of the 100G DSP is greatly improved. If the existing frequency offset estimation technology is still used, the processing efficiency will be quite low

Method used

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  • Frequency offset estimation method and device in optical transmission network
  • Frequency offset estimation method and device in optical transmission network
  • Frequency offset estimation method and device in optical transmission network

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Embodiment Construction

[0058] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0059] figure 1 It is a flowchart of a frequency offset estimation method in an optical transmission network according to an embodiment of the present invention, such as figure 1 As shown, the frequency offset estimation method in the optical transmission network of this example includes the following steps:

[0060] Step 101, acquire data symbols to be estimated for frequency offset, and eliminate noise phase, phase generated by a light source, and information phase in the data symbols to be estimated for frequency offset.

[0061] Here, the data symbols to be estimated by the...

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Abstract

The embodiment of the present invention discloses a method and device for estimating frequency offset in an optical transmission network. The method includes: acquiring data symbols to be estimated for frequency offset, eliminating noise phases in the data symbols to be estimated for frequency offset, The phase generated by the light source and the information phase; performing a correlation operation on the data symbols at a set interval in the data symbols after the elimination process, and using the correlation operation results to determine the estimated value of the frequency offset.

Description

technical field [0001] The invention relates to frequency offset estimation technology, in particular to a frequency offset estimation method and device in an optical transmission network. Background technique [0002] The 100G digital processor (DSP, Digital Signal Processor) is used in the 100G optical module in the 100G line card, mainly for data signal processing, and is an important part of the 100G optical module. Among them, 100G DSP includes a frequency offset estimation part, which mainly performs frequency offset estimation to facilitate signal frequency offset compensation, and is an important part of 100G DSP processing. Compared with the currently used 40G DSP, the processing speed of the 100G DSP is greatly improved. If the existing frequency offset estimation technology is still used, the processing efficiency will be quite low. Contents of the invention [0003] In order to solve the above technical problems, embodiments of the present invention provide a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00H04L27/26
CPCH04L27/227H04L2027/0026H04L27/0014H04L27/00
Inventor 芦秋雁
Owner SANECHIPS TECH CO LTD