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A BUILDING BLOCK APPROACH FOR DESIGNING SELF-SYNCHRONOUS CHAOTIC SYSTEMS FOR SECURE COMMUNICATION

MENG, LI
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1057759148

Abstract Details

2003, MS, University of Cincinnati, Engineering : Electrical Engineering.
Linear and time-invariant algorithms and systems are frequently used in many areas of engineering, due to the relative ease with which such systems can be characterized, analyzed and synthesized. However, the use of nonlinear and/or time-varying (NLTV) algorithms and systems are essential for the design of intelligent systems. Designing such systems however is not that easy, and though rich tools for their characterization are available, we have only scratched the surface in terms of their actual design and use. Prof. Ramamoorthy has developed a new paradigm, called the building block approach, for the design of NLTV systems that makes the design much easier. In this approach, a study of 1) Various electrical elements needed for the design of NLTV circuits; 2) The rules for their interconnections; 3) The types of dynamics that will result from such circuits and 4) The types of elements needed for various applications are made. Such knowledge then is used to design NLTV systems. In this thesis, the application of the above approach for self-synchronous chaotic systems design for secure communication is considered. The tasks here are to: 1) Design NLTV systems producing chaotic signals, 2) Develop methodologies to embed digital information on such chaotic signals, and 3) Design NLTV receivers to extract the digital information. We consider these three tasks from the building block perspective. We show that the transmitter dynamics should correspond to NLTV circuits with non-passive elements with specific properties. Similarly, we show that the error dynamics, that is, the dynamics expressed in terms of the difference between the transmitter and the receiver state variables, should correspond to the dynamics from a passive NLTV circuit with specific properties. Further insights on how to embed the data etc. can be derived from the building block approach. Using the above-mentioned procedures, we design a number of chaotic transmitters, demonstrate different ways the information signal can be embedded, and design the receivers that help to extract the data. We provide the results of many simulations. The results show that it is very easy to design complex NLTV systems using the building block approach.
Dr. Panapakkam A. Ramamoorthy (Advisor)
152 p.
chaotic system; self-synchronization; building block approach; secure communication; nonlinear time-varing elements

Recommended Citations

Citations

  • MENG, L. (2003). A BUILDING BLOCK APPROACH FOR DESIGNING SELF-SYNCHRONOUS CHAOTIC SYSTEMS FOR SECURE COMMUNICATION [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1057759148

    APA Style (7th edition)

  • MENG, LI. A BUILDING BLOCK APPROACH FOR DESIGNING SELF-SYNCHRONOUS CHAOTIC SYSTEMS FOR SECURE COMMUNICATION. 2003. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1057759148.

    MLA Style (8th edition)

  • MENG, LI. "A BUILDING BLOCK APPROACH FOR DESIGNING SELF-SYNCHRONOUS CHAOTIC SYSTEMS FOR SECURE COMMUNICATION." Master's thesis, University of Cincinnati, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1057759148

    Chicago Manual of Style (17th edition)

ucin1057759148
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© 2003, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.