Cascading synchronized chaotic systems

U.S. Patent Number: 5379346

Abstract: A cascaded synchronized nonlinear system includes a nonlinear transmitter having stable first and second subparts. The first subpart produces a first transmitter signal for driving the second subpart and the second subpart produces a second transmitter signal for driving the first subpart. The nonlinear transmitter transmits the second transmitter signal to a nonlinear cascaded receiver. The receiver, being for producing an output signal in synchronization with the second transmitter signal, includes a first stage (a duplicate of the first subpart) responsive to the second transmitter signal for producing a first receiver signal. The receiver further includes a second stage (a duplicate of the second subpart) responsive to the first receiver signal for producing the output signal. The cascaded synchronized nonlinear system can be used in an information transfer system. The transmitter, responsive to an information signal produces a drive signal for transmission to the receiver. An error detector compares the drive signal and the output signal produced by the receiver to produce an error signal indicative of the information contained in the information signal.

Inventors: Pecora; Louis M. (Alexandria, VA), Carroll; Thomas L. (Alexandria, VA)

Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC)

Application Number: 08/129,495

Issued: 1995-01-03

Expired: 2007-01-03

Classes: 380/263 ; 331/78; 380/46; 708/250

Field of search: 331/78 364/717 380/9,46,48,49,50

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