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Chaotic carrier pulse position modulation communication system and method

United States Patent

October 30, 2001
View the Complete Patent at the US Patent & Trademark Office
A chaotic carrier pulse position modulation communication system and method is disclosed. The system includes a transmitter and receiver having matched chaotic pulse regenerators. The chaotic pulse regenerator in the receiver produces a synchronized replica of a chaotic pulse train generated by the regenerator in the transmitter. The pulse train from the transmitter can therefore act as a carrier signal. Data is encoded by the transmitter through selectively altering the interpulse timing between pulses in the chaotic pulse train. The altered pulse train is transmitted as a pulse signal. The receiver can detect whether a particular interpulse interval in the pulse signal has been altered by reference to the synchronized replica it generates, and can therefore detect the data transmitted by the receiver. Preferably, the receiver predicts the earliest moment in time it can expect a next pulse after observation of at least two consecutive pulses. It then decodes the pulse signal beginning at a short time before expected arrival of a pulse.
Abarbanel; Henry D. I. (Del Mar, CA), Larson; Lawrence E. (Del Mar, CA), Rulkov; Nikolai F. (San Diego, CA), Sushchik; Mikhail M. (San Diego, CA), Tsimring; Lev S. (San Diego, CA), Volkovskii; Alexander R. (San Diego, CA)
The Regents of the University of California (Oakland, CA)
09/ 376,440
August 18, 1999
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under grant number DAAG55-98-1-0269 from the Army Research Office, and under grant number DE-FG03-90ER14138 from the Department of Energy, Office of Basic Energy Sciences. The Government has certain rights in this invention.