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Signal denoising method for free space optical communication

A free space and optical communication technology, applied in free space transmission, electrical components, electromagnetic wave transmission systems, etc., can solve problems such as poor effects, and achieve good noise removal effects, safety, reliability and practicality

Active Publication Date: 2022-02-11
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the many and complex environmental factors, the actual interference is unavoidable, and the effect is not good only by improving the anti-interference, improving the coupling efficiency of light, and improving the signal-to-noise ratio.

Method used

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  • Signal denoising method for free space optical communication
  • Signal denoising method for free space optical communication
  • Signal denoising method for free space optical communication

Examples

Experimental program
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Embodiment Construction

[0030] Such as figure 1 Shown is a schematic flow chart of the method of the present invention: the signal denoising method of the free space optical communication provided by the present invention includes the following steps:

[0031] S1. Build a free space optical communication system (such as figure 1 shown); specifically includes the transmitting end laser, the transmitting end encoder, the transmitting end modulator, the transmitting end optical antenna, the receiving end optical antenna, the receiving end optical detector, the receiving end filter and the receiving end signal processor; the transmitting end laser Send laser signal light to the encoder at the sending end; the encoder at the sending end encodes the received signal light and load it to the modulator at the sending end; the modulator at the sending end modulates the signal light, and then converts it into an optical signal through the optical antenna at the sending end and transmit to free space; the optic...

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Abstract

The invention discloses a signal denoising method for free-space optical communication, which includes building a free-space optical communication system; in the presence of various noises and interferences, using the built system to conduct communication experiments and obtain corresponding noise-containing experimental data and Ideal experimental data; form a corresponding group of acquired data and process them to obtain training set, test set and verification set; establish a theoretical denoising model based on Fourier transform and autoencoder and train to obtain the optimal denoising model; in practice When optical communication is carried out in free space, the optimal denoising model is used to denoise the communication data. The present invention establishes a denoising model, and uses the trained model as a means of real-time signal denoising to carry out real-time denoising on the optical communication process; therefore, the method of the present invention can not only denoise the signal of free-space optical communication, but also remove noise The utility model has the advantages of good effect, safety, reliability and good practicability.

Description

technical field [0001] The invention belongs to the field of free-space optical communication, and in particular relates to a signal denoising method for free-space optical communication. Background technique [0002] Optical wireless communication is also called atmospheric laser communication or free space optical communication (free space optical-communication, FSO). Way. Optical wireless communication combines the characteristics of microwave communication and optical fiber communication. It has the advantages of large communication capacity, strong confidentiality, and no spectrum authorization. It can effectively support high-speed and high-capacity front-end and backhaul links. It is a cutting-edge technology that has emerged in recent years. Considered a promising communication use case and deployment scenario. [0003] However, the atmosphere between the air signal source and the ground signal source contains many atmospheric gas molecules and aerosol particles; a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/11H04B10/69
CPCH04B10/11H04B10/697
Inventor 黄端罗海森
Owner CENT SOUTH UNIV
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