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LED nonlinear compensation method, system, equipment and medium based on legendre polynomial

A nonlinear compensation and 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 high applicability

Active Publication Date: 2022-07-26
SOUTH CHINA NORMAL UNIVERSITY
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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 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

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  • LED nonlinear compensation method, system, equipment and medium based on legendre polynomial
  • LED nonlinear compensation method, system, equipment and medium based on legendre polynomial
  • LED nonlinear compensation method, system, equipment and medium based on legendre polynomial

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[0056] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

[0057] In the description of the present invention, it should be understood that the azimuth description, such as the azimuth or position relationship indicated by up, down, front, rear, left, right, etc., is based on the azimuth or position relationship shown in the drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a particular orientation, be construc...

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Abstract

The invention discloses an LED nonlinear compensation method, system, equipment and medium based on Legendre polynomial, belonging to the technical field of optical communication. The LED nonlinear compensation method of the present invention includes: acquiring a distortion signal; performing feature broadening processing on the distortion signal by using Legendre polynomial to obtain an orthogonal function set; performing nonlinear compensation on the orthogonal function set to obtain an output signal; according to the output signal and the reference signal The structural coefficient of the nonlinear compensator is updated, and the updated structural coefficient is fed back to the nonlinear compensator. This LED nonlinear compensation method based on Legendre polynomial can perform nonlinear compensation for LED distortion signals of different modulation formats in different application scenarios, and has high applicability.

Description

technical field [0001] The present invention relates to the technical field of optical communication, in particular to a method, system, device and medium for non-linear compensation of LED based on Legendre polynomial. Background technique [0002] At present, when nonlinear compensation is performed on light-emitting diodes, nonlinear equalizers or blind equalization techniques are often used to correct distorted signals, such as Volterra model and neural network model, etc., but these methods are not based on the physical mechanism of LED nonlinearity. Solve problems, or cannot be deployed due to high algorithm complexity, so that both 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. SUMMARY OF THE INVENTION [0003] The present invention aims to solve at least...

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Application Information

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Patent Type & Authority Patents(China)
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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