In this paper, we propose a novel approach to secure communication based on spatiotemporal chaos. At the transmitter end, the state variables of the coupled map lattice system are divided into two groups: one is used ...In this paper, we propose a novel approach to secure communication based on spatiotemporal chaos. At the transmitter end, the state variables of the coupled map lattice system are divided into two groups: one is used as the key to encrypt the plaintext in the N-shift encryption function, and the other is used to mix with the output of the N-shift function to further confuse the information to transmit. At the receiver end, the receiver lattices are driven by the received signal to synchronize with the transmitter lattices and an inverse procedure of the encoding is conducted to decode the information.Numerical simulation and experiment based on the TI TMS320C6713 Digital Signal Processor(DSP) show the feasibility and the validity of the proposed scheme.展开更多
A method of Direct Sequence Spread-Spectrum(DS/SS)corn,nunication based on synchronizedspatiotemporal chootic sequences is proposed.We use Coupled Logistic Maps(CLM)to generate the chaotictimes sequences.This coupled ...A method of Direct Sequence Spread-Spectrum(DS/SS)corn,nunication based on synchronizedspatiotemporal chootic sequences is proposed.We use Coupled Logistic Maps(CLM)to generate the chaotictimes sequences.This coupled mop lattices has long chaotic transient and can be recovered easily.Therobustness and the error probability is discussed and the advantage of the method in Spectral spreading andsecure communication is demonstrated.展开更多
in this paper a chaotic secure communication System using a feedback controlling subsystem is presented.The transmitter and the receiver are built with Chua's circuits.We find that,using feedback controlling,the t...in this paper a chaotic secure communication System using a feedback controlling subsystem is presented.The transmitter and the receiver are built with Chua's circuits.We find that,using feedback controlling,the time for the receiver to obtain the Synchronization with the transmitter can be obviously decreased.Thecorrelation between the time and the feedback coefficient is presented at the end of this paper.展开更多
Chua＇s circuit, which is improved to integrate conveniently, is presented. A drive-response chaotic synchronization system is constructed, which possesses a certain stability, resisting-disturbance, and so on. By mea...Chua＇s circuit, which is improved to integrate conveniently, is presented. A drive-response chaotic synchronization system is constructed, which possesses a certain stability, resisting-disturbance, and so on. By means of research, it can be concluded that the chaotic synchronization system is provided with the characteristic of chaos synchronization self-maintenance. Utilizing the characteristic, the critical problem of how to simultaneously transmit the controlling signal of chaotic synchronization and the secret signal at a channel can be solved, and that a practical experiment validates the method; as a result, the research in the paper provides the foundation of putting chaos into practice application to secret communication.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.61172070)the Funds from the Science and Technology Innovation Team of Shaanxi Province,China(Grant No.2013CKT-04)
文摘In this paper, we propose a novel approach to secure communication based on spatiotemporal chaos. At the transmitter end, the state variables of the coupled map lattice system are divided into two groups: one is used as the key to encrypt the plaintext in the N-shift encryption function, and the other is used to mix with the output of the N-shift function to further confuse the information to transmit. At the receiver end, the receiver lattices are driven by the received signal to synchronize with the transmitter lattices and an inverse procedure of the encoding is conducted to decode the information.Numerical simulation and experiment based on the TI TMS320C6713 Digital Signal Processor(DSP) show the feasibility and the validity of the proposed scheme.
文摘A method of Direct Sequence Spread-Spectrum(DS/SS)corn,nunication based on synchronizedspatiotemporal chootic sequences is proposed.We use Coupled Logistic Maps(CLM)to generate the chaotictimes sequences.This coupled mop lattices has long chaotic transient and can be recovered easily.Therobustness and the error probability is discussed and the advantage of the method in Spectral spreading andsecure communication is demonstrated.
文摘in this paper a chaotic secure communication System using a feedback controlling subsystem is presented.The transmitter and the receiver are built with Chua's circuits.We find that,using feedback controlling,the time for the receiver to obtain the Synchronization with the transmitter can be obviously decreased.Thecorrelation between the time and the feedback coefficient is presented at the end of this paper.
基金the Special Scientific Research Program of Education Department of Shaanxi Province (Grant No. 05Jk159)
文摘Chua＇s circuit, which is improved to integrate conveniently, is presented. A drive-response chaotic synchronization system is constructed, which possesses a certain stability, resisting-disturbance, and so on. By means of research, it can be concluded that the chaotic synchronization system is provided with the characteristic of chaos synchronization self-maintenance. Utilizing the characteristic, the critical problem of how to simultaneously transmit the controlling signal of chaotic synchronization and the secret signal at a channel can be solved, and that a practical experiment validates the method; as a result, the research in the paper provides the foundation of putting chaos into practice application to secret communication.
