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WFRFT secure communication method based on chaotic mapping parameter pool

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

Active Publication Date: 2019-08-16
SHENYANG LIGONG UNIV
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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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  • WFRFT secure communication method based on chaotic mapping parameter pool
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  • WFRFT secure communication method based on chaotic mapping parameter pool

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Embodiment Construction

[0011] 1) The Lyapunov exponent value of Tent mapping is relatively high, that is, it has a better initial value sensitive dependence on the initial value, and the full mapping of Tent mapping has a wider range of fractal parameters and a larger application space. Therefore, the Tent mapping based The parameter pool constructor. The Tent sequence is generated by the iterative equation of formula (1), and the initial value range of the Tent map is [0 1), so x m Sequence values ​​also range from [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 cycle characteristics of the modulation order.

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

[0015] 3) With the growth of the sequence rank m, use the real-valued parameter y m A parameter pool is formed, m∈[1N], the upper limit of m is determined...

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Abstract

The invention discloses a WFRFT secure communication method based on a chaotic mapping parameter pool. According to the method, the good characteristics of the Tent mapping are utilized, the output range characteristics of the Tent sequence are combined, the WFRFT modulation order period can be met through parameter transformation, and therefore a parameter pool construction function is established through the Tent mapping and parameter transformation processing, and a parameter pool is generated. Furthermore, in each parameter selection period, parameters are sequentially selected from the parameter pool, the parameters serve as modulation orders, and WFRFT processing is carried out on to-be-transmitted information at the moment. The receiving end generates a real value sequence through the same Tent chaotic equation, generates a parameter pool which is the same as that of the transmitting end through parameter transformation processing, and then performs WFRFT inverse processing on the received signal so as to recover the transmission information. A modulation order parameter pool with similar random characteristics is formed through a chaotic sequence, so that the scanning difficulty of an unauthorized user is greatly increased, and the concealment and safety of original information transmission are improved.

Description

technical field [0001] The invention relates to the technical field of chaos technology and secure communication, in particular to a WFRFT security communication method based on a chaos 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 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. 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 communication process using WFRFT technology, the unlicensed receiver can obtain demodulation parameters through parameter scann...

Claims

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Application Information

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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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