scholarly journals WFRFT Secure Communication Method Based on Chaotic Parameter Pool

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Fang Liu
Keyword(s):  
Bit Error Rate ◽  
Secure Communication ◽  
Order Parameter ◽  
Processing Time ◽  
Fractional Fourier Transform ◽  
Effective Characteristics ◽  
Communication Method ◽  
Random Modulation ◽  
Chaotic Parameter ◽  
Original Information

In this study, to solve the hidden limitation of conventional weighted fractional Fourier transform (WFRFT), a random modulation order parameter pool is established by applying chaos technology. Further, a WFRFT secure communication method based on the chaotic parameter pool (CPP) is proposed. Based on the effective characteristics of tent mapping and the sequence output range, the parameter pool constructor is established by parameter transformation. Furthermore, for each parameter selection period, the information can be processed by WFRFT using different modulation orders. The modeling and simulation demonstrate that this method can significantly increase the bit error rate and processing time of unauthorized receivers. This indicates that it can greatly increase the scanning difficulty of unauthorized users and improve the concealment and security of the original information transmission.

Invisible Encryption Communication Method based on WFRFT

2021 ◽  
Author(s):  
Fang Liu ◽  
Lizhi Chen ◽  
Yongxin Feng
Keyword(s):  
Fractional Fourier Transform ◽  
Signal Transmission ◽  
Single Parameter ◽  
Communication Process ◽  
Statistical Characteristics ◽  
Control Rules ◽  
Communication Method ◽  
Micro Features ◽  
Encryption Method ◽  
Technical Basis

Abstract Considering that the open signal transmission mode can lead to the potential risk of interception, identification, decoding, and interference, high confidentiality is imperative for wireless communication. The security of communication process is typically ensured by encrypting and concealing transmitted information. The weighted fractional Fourier transform (WFRFT) technology can substantially change the signal characteristics, and the statistical characteristics of the signal diversify to effectively hide the communication information. In this paper, considering a single parameter-WFRFT as the breakthrough point, the in-depth investigation of the mechanism of a single-parameter fractional domain and the analysis of its potential micro-features and dark features are presented; accordingly, an invisible encryption method with vector jumping is proposed. The relationship between modulation order and constellation diagram is utilized, the jumping matrix and vector are thereafter established, and the control rules are formulated accordingly; furthermore, the dynamic modulation order is obtained by the jumping vector control. The new method can improve the security performance of the system and provide a technical basis for securing communication with anti-jamming, anti-interception, and anti-deception capability.

scholarly journals Multistage Synchronous Secure Communication Method

2018 ◽  
Vol 1087 ◽  
pp. 032011
Author(s):  
Wei Sun ◽  
Jun He ◽  
Lei Quan
Keyword(s):  
Secure Communication ◽  
Communication Method

scholarly journals The Design and Its Application in Secure Communication and Image Encryption of a New Lorenz-Like System with Varying Parameter

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Lilian Huang ◽  
Donghai Shi ◽  
Jie Gao
Keyword(s):  
Numerical Simulation ◽  
Secure Communication ◽  
State Feedback ◽  
Complex Dynamic ◽  
State Variable ◽  
Encryption And Decryption ◽  
Single State ◽  
Chaotic Parameter ◽  
Synchronization Scheme ◽  
New System

A new Lorenz-like chaotic system with varying parameter is proposed by adding a state feedback function. The structure of the new designed system is simple and has more complex dynamic behaviors. The chaos behavior of the new system is studied by theoretical analysis and numerical simulation. And the bifurcation diagram shows a chaos-cycle-chaos evolution when the new parameter changes. Then a new synchronization scheme by a single state variable drive is given based on the new system and a chaotic parameter modulation digital secure communication system is also constructed. The results of simulation demonstrate that the new proposed system could be well applied in secure communication. Otherwise, based on the new system, the encryption and decryption of image could be achieved also.

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