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An im-dd optical communication system based on channel coding and secondary vnle

An optical communication system, IM-DD technology, applied in the field of optical communication, can solve the problems of high bit error rate floor, poor channel coding effect, and affecting the performance of IMDD optical communication system, so as to improve the overall performance and make up for the considerable performance Loss, high reliability effect

Active Publication Date: 2022-05-17
TONGJI UNIV
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Problems solved by technology

However, in the existing IM-DD optical communication system, due to linear damage such as attenuation and chromatic dispersion in the optical fiber channel, as well as nonlinear damage caused by instantaneous chirp and adiabatic chirp, the effect of channel coding is not good. The existence of these factors seriously affects the performance of the IMDD optical communication system

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  • An im-dd optical communication system based on channel coding and secondary vnle
  • An im-dd optical communication system based on channel coding and secondary vnle
  • An im-dd optical communication system based on channel coding and secondary vnle

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0044] An IM-DD optical communication system based on channel coding and secondary VNLE, its structure is as follows figure 1 As shown, considering comprehensive factors such as system calculation speed and compensation effect, the present invention innovatively combines channel coding and secondary VNLE for application in the IMDD optical communication system. Through the secondary VNLE, the error correction code is equivalent to working in the AWGN chann...

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Abstract

The invention relates to an IM-DD optical communication system based on channel coding and secondary VNLE, comprising: a signal generation module, a channel coding module, a signal modulation module, a direct modulation laser, an optical fiber link, a digital signal processing module, and a signal recovery module , channel decoding and error analysis module and signal receiving module; signal generation module, signal encoding module, signal modulation module, direct modulation laser, optical fiber link, digital signal processing module, signal recovery module, channel decoding and error analysis module and The signal receiving modules are connected in sequence. Compared with the prior art, the present invention has the advantages of realizing the maximum coding benefit and effect of channel coding, stable performance and high reliability.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an IM-DD optical communication system based on channel coding and secondary VNLE. Background technique [0002] Since entering the 21st century, information in modern society has shown explosive growth, and people have higher and higher requirements for the speed, capacity and quality of communication networks. How to maximize the use of existing optical equipment, maximize spectral efficiency and reliability, and increase system data storage capacity has become a hot spot in the field of optical communications. [0003] Today's traffic growth is dominated by wireless communications and data center applications, and the choice of optical transmission technology is largely due to the relatively short transmission distances and short rotations of the transmission systems that support such applications Depends on the ability to carry high data rate signals with low im...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/54H04B10/2525H04B10/079
CPCH04B10/541H04B10/2525H04B10/07953Y02D30/70
Inventor 周俊鹤岳文骄王玉桁
Owner TONGJI UNIV
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