The electrical activity of the heart usually shows dynamical behavior which is neither periodic nor deterministically chaotic: The interbeat intervals seem to contain a random component. Although long term predictions are thus impossible, good predictions can be made for times smaller than one heart cycle. This fact is used in order to suppress measurement errors by a local geometric projection...

In this paper, a real-time implementation of the Rössler chaotic system in a Field Programmable Gate Array (FPGA) is presented. At first, we use directly the VHDL language for the hardware description of the system, contrary to some previous works where the Xilinx system generator of MATLAB/SIMULINK is used to generate the VHDL code. Then, after a step of optimization, to reduce the resources o...

s for the “Workshop on Transmission of Chaotic Signals” 1-3 August 2006, University of Bristol, UK Key: (O) – oral presentation; (P) poster presentation. Underlined author is oral presenter. The order is alphabetic according to the presenting author. Nonlinear Communications Strategies (O) Henry Abarbanel UCSD Knowledge of nonlinear physical systems has matured enough that application to practi...

This paper presents the robust design for chaotic cryptosystems. The cryptosystem combines cryptograph with chaotic synchronization. The hyperchaotic signals are synchronized between the encrypter and the decrypter based on observer gains. The technique of linear matrix inequality (LMI) is applied to determine the observer gains. A theorem has been proposed to guarantee the robust stabilization...

This paper investigates the design problem of constructing state feedback controllers for regulating the output of the unified chaotic system (Lü, Chen, Cheng and Celikovsky, 2002).Explicitly, state feedback controllers have been derived to regulate the output of the unified chaotic system so as to track constant reference signals. The control laws are derived by means of the regulator equation...

The chaotic synchronization of two electron-wave media with interacting backward waves and cubic phase nonlinearity is investigated in the paper. To detect the chaotic synchronization regime we use a new approach, the so-called time scale synchronization [Chaos 14, 603-610 (2004)]. This approach is based on the consideration of the infinite set of chaotic signals' phases introduced by means of ...