LED nonlinear compensation method, system and device based on Legendre polynomial and medium

A nonlinear compensation, polynomial technology, applied in the field of optical communication, can solve problems such as poor adaptability and robustness, high algorithm complexity, and inability to deploy, and achieve the effect of high applicability

Active Publication Date: 2021-11-19
SOUTH CHINA NORMAL UNIVERSITY
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  • Claims
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Problems solved by technology

[0002] At present, when performing nonlinear compensation for light-emitting diodes, it is often used to design nonlinear equalizers or blind equalization techniques to correct distorted signals, such as Volterra models and neural ...

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  • LED nonlinear compensation method, system and device based on Legendre polynomial and medium
  • LED nonlinear compensation method, system and device based on Legendre polynomial and medium
  • LED nonlinear compensation method, system and device based on Legendre polynomial and medium

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Embodiment Construction

[0056] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0057] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific ...

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Abstract

The invention discloses an LED nonlinear compensation method, system and device based on a Legendre polynomial and a medium, and belongs to the technical field of optical communication. The LED nonlinear compensation method comprises the following steps: acquiring a distortion signal; using a Legendre polynomial for carrying out feature broadening processing on the distorted signals, and obtaining an orthogonal function set; performing nonlinear compensation on the orthogonal function set to obtain an output signal; and updating the structure coefficient of the nonlinear compensator according to the output signal and the reference signal, and feeding back the updated structure coefficient to the nonlinear compensator. According to the LED nonlinear compensation method based on the Legendre polynomial, nonlinear compensation can be carried out on LED distortion signals of different modulation formats in different application scenes, and the applicability is high.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a Legendre polynomial-based LED nonlinear compensation method, system, equipment and medium. Background technique [0002] At present, when performing nonlinear compensation for light-emitting diodes, it is often used to design nonlinear equalizers or blind equalization techniques to correct distorted signals, such as Volterra models and neural network models, etc., but these methods may not be based on the physical mechanism of LED nonlinearity Solve the problem, or cannot be deployed due to the high complexity of the algorithm, so that the adaptability and robustness are poor. Therefore, how to provide an LED nonlinear compensation method that can cope with LED nonlinear compensation under different modulation signals and different application scenarios has become an urgent problem to be solved. Contents of the invention [0003] The present invention aims to s...

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Application Information

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IPC IPC(8): H04B10/50H04B10/58
CPCH04B10/502H04B10/58
Inventor 邓雄牛一楠范文祥周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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