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Signal encryption transmission method based on hyper-chaos model

A technology of signal encryption and transmission method, which is applied in the field of optical transmission, can solve the problems of low security performance, achieve high security, improve security performance, and improve the effect of bit error performance

Pending Publication Date: 2022-05-17
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a signal encryption transmission method based on a hyperchaotic model, which solves the defect of relatively low security performance in the prior art, improves the security performance of optical transmission, and reduces signal damage caused by chaotic encryption

Method used

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  • Signal encryption transmission method based on hyper-chaos model
  • Signal encryption transmission method based on hyper-chaos model
  • Signal encryption transmission method based on hyper-chaos model

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Embodiment 1

[0052] Such as figure 1 As shown, a hyperchaotic model-based signal encryption transmission method provided by an embodiment of the present invention includes:

[0053] S1. Obtain a signal to be sent.

[0054] Get the signal to be sent, that is, the original binary data.

[0055] S2. Perform probability shaping and serial-to-parallel conversion on the signal to be sent to obtain a parallel signal.

[0056] The signal to be sent (original binary data) is sent to the distribution matcher for probability shaping to achieve the required probability distribution.

[0057] The main principle of probability shaping is to use the distribution matcher to set the probability distribution of random binary data streams, compress the probability of external constellation points as much as possible, and increase the probability of internal constellation points, thereby reducing the optical power requirements of the transmitter and suppressing the optical fiber occurrence of nonlinear effec...

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Abstract

The invention discloses a signal encryption transmission method based on a hyper-chaos model, which belongs to the technical field of optical transmission and comprises the following steps: acquiring a signal to be sent; probabilistic shaping and serial-parallel conversion are carried out on the to-be-sent signal to obtain a parallel signal; encrypting constellation points of the parallel signals by using a masking vector generated by the hyper-chaos model, and then performing constellation mapping to obtain mapping signals; modulating the mapping signal into multiple carriers, and encrypting a subcarrier frequency by using a frequency encryption vector generated by a hyper-chaos model to obtain a modulation signal; performing inverse Fourier transform on the modulation signal to transform a frequency domain into a time domain, and performing time slot encryption on the modulation signal by using a time slot encryption vector generated by a hyperchaos model in the time domain to obtain a time slot encrypted signal; performing filtering and parallel-serial conversion on the time slot encryption signal, and then transmitting to complete signal encryption transmission; encryption is carried out in the three dimensions of constellation points, frequency and time, the safety performance of optical transmission is improved, the transmission performance is improved, and signal damage is reduced.

Description

technical field [0001] The invention relates to a signal encryption transmission method based on a hyperchaotic model, belonging to the technical field of optical transmission. Background technique [0002] Optical communication technology plays an important role in our information industry because of its large transmission capacity, fast transmission speed, and long-distance transmission. With the development of social economy and the continuous progress of society, people's demand for traffic is increasing day by day; the expansion of optical communication system is an eternal topic. In 2021, the Ministry of Industry and Information Technology also proposed to accelerate the high-quality development of the information communication industry from various aspects, with the intention of comprehensive Promote the process of social informatization on a larger scale and at a higher level. [0003] As a multi-carrier technology, Orthogonal Frequency Division Multiplexing (OFDM) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/85H04L9/00H04L9/08H04L27/34
CPCH04L9/001H04L9/0816H04B10/85H04L27/3405Y02D30/70
Inventor 刘博任建新毛雅亚陈帅东吴翔宇吴泳锋孙婷婷赵立龙戚志鹏李莹王凤哈特
Owner NANJING UNIV OF INFORMATION SCI & TECH
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