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Self-adaptive equalization method, device and equalizer

A technology of adaptive equalization and equalizer, which is applied in the field of communication and can solve problems such as the inability to realize the work of adaptive equalizer

Active Publication Date: 2017-12-19
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Therefore, in the current technical solution, it is impossible to realize the efficient and stable work of the adaptive equalizer during the convergence process

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  • Self-adaptive equalization method, device and equalizer
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  • Self-adaptive equalization method, device and equalizer

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Embodiment Construction

[0103] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0104] The present invention aims at the problem that the adaptive equalizer cannot efficiently and stably work in the convergence process in the existing technical solutions, and provides an adaptive equalization method, device and equalizer, which utilizes the adjustment of the tap coefficients to realize the equalizer in the Work more efficiently and stably in steady state.

[0105] Such as figure 2 As shown, an adaptive equalization method in an embodiment of the present invention includes:

[0106] Step 101 , acquiring frame alignment information of polarization state data output by an equalizer and updated tap coefficients after blind equalization processing.

[0107] The specific diagram of the equalizer is as follows image 3 As shown, the co...

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Abstract

The invention provides a self-adaptive equalization method, a device and an equalizer, which relate to the field of communication. The self-adaptive equalization method comprises steps: frame positioning information about polarization state data outputted by the equalizer and a tap coefficient updated after blind equalization processing are acquired; according to the frame positioning information and performance information of the equalizer, a current operating state of the equalizer is determined; according to the current operating state of the equalizer and the tap coefficient updated after blind equalization processing, the tap coefficient or a leakage factor in blind equalization processing are correspondingly adjusted; and according to the adjusted tap coefficient or the leakage factor, self-adaptive convergence is carried out until the equalizer operates stably in a stable state. The solution of the disclosure solves the problem in an existing technical solution that the efficient and stable operation of a self-adaptive equalizer cannot be realized during a convergence process.

Description

technical field [0001] The invention relates to the communication field, in particular to an adaptive equalization method, device and equalizer. Background technique [0002] Generally, in a communication system, an equalizer is needed to compensate losses such as symbol crosstalk of transmitted data in a channel. The equalizer often adopts a method based on adaptive blind equalization, using data characteristics, and the equalizer adaptively tracks and compensates for channel changes and losses. Because of its simple structure and does not occupy data bandwidth, it is a commonly used method for equalizers in communication systems . However, there is a certain probability that the blind equalization algorithm will converge to a non-optimal state during the convergence process, that is, enter a metastable state. [0003] In particular, for high-speed optical transmission systems, coherent receivers need to compensate for various impairments in the optical channel, such as p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03
CPCH04L25/03025H04L25/03885H04B10/61H04L25/03
Inventor 王卫明周伟勤蔡轶
Owner ZTE CORP
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