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A WFRFT Secure Communication Method Based on Chaotic Map Parameter Pool

A technology for secure communication and chaotic mapping, applied in the field of chaotic technology and secure communication, to achieve the effect of increasing the difficulty of scanning, increasing concealment and security

Active Publication Date: 2022-06-07
SHENYANG LIGONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of the concealed limitations of the existing conventional WFRFT, introduce chaos technology, and then establish a modulation order parameter pool similar to random characteristics, thereby proposing a WFRFT secure communication method based on the chaotic mapping parameter pool

Method used

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  • A WFRFT Secure Communication Method Based on Chaotic Map Parameter Pool
  • A WFRFT Secure Communication Method Based on Chaotic Map Parameter Pool
  • A WFRFT Secure Communication Method Based on Chaotic Map Parameter Pool

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Embodiment Construction

[0011] 1) The Lyapunov exponent value of the Tent mapping is relatively high, that is, it has a better sensitivity dependence on the initial value, and the fractal parameter range of the full mapping of the Tent mapping is wider and the application space is larger. The parameter pool constructor. The Tent sequence is generated by the iterative equation of formula (1). The initial value range of the Tent map is [0, 1), for which x m The sequence value range is also [0,1).

[0012]

[0013] 2) Then use the Tent mapping output sequence to perform parameter transformation processing, such as formula (2), so that the transformed parameter y m The value interval is [0,4), and the value interval conforms to the 0-4 period characteristic of the modulation order.

[0014] y m =4x m-1 (2).

[0015] 3) As the sequence rank m increases, use the real-valued parameter y m A parameter pool is formed, m∈{1, 2, 3..., N}, the upper limit of m is determined according to the number of s...

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Abstract

A WFRFT secure communication method based on chaotic map parameter pool: Utilizing the good characteristics of Tent mapping, combined with the characteristics of the output range of Tent sequence, it can satisfy the WFRFT modulation order period through parameter transformation, and establish parameters through Tent mapping and parameter transformation processing Pool constructor, and generate parameter pool. Further, in each parameter selection cycle, parameters are sequentially selected from the parameter pool, and the parameters are used as the modulation order, and the information to be transmitted at this moment is subjected to WFRFT processing. The receiving end generates real-valued sequences through the same Tent chaotic equation, and generates the same parameter pool as the transmitting end through parameter transformation processing, and then performs WFRFT inverse processing on the received signal to recover the transmitted information. A random-like modulation order parameter pool is formed through the chaotic sequence, which greatly increases the difficulty of scanning for unauthorized users and increases the concealment and security of original information transmission.

Description

technical field [0001] The invention relates to the field of chaotic technology and secure communication technology, in particular to a WFRFT secure communication method based on a chaotic mapping parameter pool. Background technique [0002] Weighted Fractional Fourier Transform (WFRFT) is an emerging transform domain signal processing and analysis method in wireless communication systems. The WFRFT signal is represented as a signal form of time-frequency domain signal fusion. The weighted fractional domain is in the intermediate state of the traditional time domain and frequency domain. The features based on WFRFT retain the respective advantages of traditional time and frequency domain signals. new physical properties. WFRFT has been widely used in engineering technologies such as information optics and image encryption, and has gradually expanded to image encryption, signal fractional domain sampling, reconstruction, and communication signal processing. However, in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00H04L9/08H04B1/7073H04B1/7097
CPCH04L9/001H04L9/0869H04B1/7073H04B1/7097
Inventor 刘芳冯永新
Owner SHENYANG LIGONG UNIV
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