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Frequency offset estimation method and device in optical transmission network

A technology for optical transmission network and frequency offset estimation, which is applied in the field of frequency offset estimation and can solve problems such as low processing efficiency

Active Publication Date: 2016-01-27
SANECHIPS TECH CO LTD
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Problems solved by technology

Compared with the currently used 40GDSP, the processing speed of 100GDSP 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 invention discloses a frequency offset estimation method and a frequency offset estimation device in an optical transmission network. The frequency offset estimation method comprises the steps of: acquiring data symbols to be subjected to frequency offset estimation, and eliminating noise phase in the data symbols to be subjected to frequency offset estimation, phase generated by a light source and phase of information; carrying out correlation operation on the data symbols at set intervals among the data symbols after elimination processing; and determining a frequency offset estimation value by utilizing correlation operation results.

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, 100GDSP includes a frequency offset estimation part, which mainly performs frequency offset estimation to facilitate signal frequency offset compensation, and is an important part of 100GDSP processing. Compared with the currently used 40GDSP, the processing speed of 100GDSP 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 frequenc...

Claims

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Application Information

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IPC IPC(8): H04L27/00H04L27/26
CPCH04L27/227H04L2027/0026H04L27/0014H04L27/00
Inventor 芦秋雁
Owner SANECHIPS TECH CO LTD
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