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Probability shaping method based on chaotic encryption

A chaotic encryption and probabilistic technology, applied in the field of optical communication, can solve the problems of increasing hardware costs, high hardware requirements, and high computing power, and achieve the effect of saving hardware costs and improving channel capacity

Active Publication Date: 2021-09-24
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the probabilistic shaping algorithm based on CCDM requires more computing power and higher hardware requirements, which increases the hardware cost

Method used

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  • Probability shaping method based on chaotic encryption
  • Probability shaping method based on chaotic encryption
  • Probability shaping method based on chaotic encryption

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Embodiment Construction

[0031] The present invention will be described in detail below with reference to the drawings and embodiments. At the same time, the technical problems and beneficial effects solved by the technical solution of the present invention are also described. It should be pointed out that the described embodiments are only intended to facilitate the understanding of the present invention, and have no limiting effect on it.

[0032] In order to enable those skilled in the art to easily understand the principle and implementation of the present invention, the embodiment of the present invention takes the 16QAM probability shaping method based on chaotic Logistic mapping as an example to illustrate the working principle of the embodiment of the present invention.

[0033] The specific embodiment of the present invention is described below in conjunction with accompanying drawing, concrete steps:

[0034] 1. Obtain the information sequence and set the initial value of the chaotic system....

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Abstract

The invention discloses a probability shaping method based on chaotic encryption, and belongs to the field of optical communication. A chaotic sequence and an information sequence generated in a chaotic system are adopted, a redundant sequence is added according to the setting of a threshold value through a sending end bit operation module, and a binary sending sequence with specific symbol distribution is output; probabilistic shaping of the sequence is realized through signal modulation with a specific mapping table; and the bit operation module at the receiving end realizes decryption of chaotic encryption at the sending end by using the chaotic sequence and the redundant sequence added at the sending end. According to the invention, the probability shaping effect is realized while chaotic encryption is carried out, and the channel capacity is improved; as the probability shaping part hardly occupies the hardware computing power, the hardware cost is greatly saved; the method can be superposed with various multi-dimensional chaotic encryption technologies, and one-dimensional increase of the key space is realized. The method can be applied to the field of optical fiber communication, and signal encryption and channel capacity improvement are achieved.

Description

technical field [0001] The invention belongs to the field of optical communication, in particular to an optical transmitter and receiver system with probability shaping technology based on chaotic encryption. Background technique [0002] Optical fiber communication has the advantages of large capacity, high speed, low loss, good anti-electromagnetic interference performance, and strong security, and has become the backbone of today's information transmission. Digital signal processing technologies to improve the capacity of optical fiber channels are also emerging, among which probability shaping technology has received extensive attention. The current mainstream probability shaping method is a probability shaping algorithm based on CCDM (Constant Composition Distribution Matching), which can reduce the transmit power and obtain shaping gains with high spectral efficiency. However, the probabilistic shaping algorithm based on CCDM requires more computing power and higher h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60G06F21/62
CPCG06F21/602G06F21/6209
Inventor 郭栋忻向军刘宇航高然张琦姚海鹏王光全
Owner BEIJING INSTITUTE OF TECHNOLOGYGY