Chaotic communication apparatus and method for use with a wired

Details Chaotic communication apparatus and method for use with a wired Chaotic communication apparatus and method for use with a wired

1996-07-05

1999-07-13

Cangialosi, Salvatore

Cryptography

Communication system using cryptography

Wireless communication

380 48, H04C 900

Patent

active

059237600

ABSTRACT:
A covert communication apparatus exploits chaotic dynamics in the multi-dimensional phase space with a continuous number of states and wide internal spectral bandwidth. The information modulates a chaotically generated signal, and the modulated chaotic signal is shaped for compatibility with the specific constraints demanded by the communication channel. In an analog embodiment, the chaotic signal spectrum is band limited to be compatible with the bandwidth requirements of the transmission link, and in a digital embodiment the word length and baud rate of the transmitted digital data are selected for similar transmission link compatibility. After transmission over the communication link, the received signal is applied to a receiver chaotic signal generator substantially identical to the transmitter chaotic signal generator and the chaotic signal is recovered. This chaotic signal is used to demodulate the received signal for recovery of the information.

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patent: 5379346 (1995-01-01), Pecora et al.
patent: 5680462 (1997-10-01), Miller et al.
"Synchronous Chaotic Response of Nonlinear Oscillator System". . . Jolkovski & Rulkov--Tech. Phys Letter--19(2) Feb. 1993.
"Chaotic Digital Encoding: An Approach to Secure Communication" D. R. Frey, IEEE Transactions vol. 40 No. 10 Oct. 1993.
"Using Filters for Chaotic Synchronization For Communications" T.L. Carroll--IEEE International Symposium 1995 Seattle Wash.

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