Pulse or digital communications – Repeaters – Testing
Patent
1994-03-28
1996-07-23
Gregory, Bernarr E.
Pulse or digital communications
Repeaters
Testing
375202, 380 34, 380 46, 331 78, 364717, 395 3, 395 61, 395900, H04B 169, H04B 1713, G06G 700
Patent
active
055397697
ABSTRACT:
A system and method for fuzzy spread spectrum communication. The system includes a fuzzy spreader for spreading an input signal over a range of frequencies and fuzzy despreader for extracting the spread input signal from the range of frequencies. In the illustrative implementation, the inventive system a fuzzy pseudo-random generator for use in the fuzzy spreader and the fuzzy despreader. The fuzzy pseudo-random generator uses a novel method for generating pseudo-random numbers. It does not use encryption or decryption techniques. The invention further provides a method for adaptive rule generation and a novel method for identifying the centroid of the set of output numbers. This allows the fuzzy system to learn spreading rules that favor data compression, compact multiplexing, bandwidth conservation, and other communication tasks as well as rules that favor security.
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Pacini et al., "Adaptive Fuzzy Frequency Hopper", article submitted to the IEEE Transactions on Communications in 1993.
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Pacini et al, "Adaptive fuzzy systems for target tracking"; Intelligent Systems Engineering, (vol. 1, No. 1; Fall 1992).
L. A. Zadeh, "Probability Measures of Fuzzy Events"; Journal of Mathematical Analysis and Applications, (pp. 421-427, 1968).
Kosko Bart
Pacini Peter J.
Gregory Bernarr E.
University of Southern California
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