Interrogator

Details Interrogator Interrogator

2011-08-16

2011-08-16

Flores, Leon (Department: 2611)

Pulse or digital communications

Spread spectrum

Frequency hopping

C375S130000, C375S132000, C375S134000, C375S135000, C375S136000

Reexamination Certificate

active

08000375

ABSTRACT:
A hopping pattern setting section sets, as a frequency hopping pattern code, elements of a matrix in which all integers of “1” to “the number of frequencies to be used” appear only once and which is obtained by adding, as an offset, any one of integers of “0” to “(the number of frequencies to be used)−1” to each of elements of a matrix obtained by excluding integers larger than the number of frequencies to be used from a matrix in which all integers of “1” to “(prime number larger than the number of frequencies to be used)−1” appear only once. A frequency oscillation section converts the frequency hopping pattern code into the frequencies to be used to output unmodulated signals of the frequencies to a transmission section and a reception section.

REFERENCES:
patent: 5946624 (1999-08-01), Petranovich et al.
patent: 6061389 (2000-05-01), Ishifuji et al.
patent: 2008/0079542 (2008-04-01), Rofougaran
patent: 9-102980 (1997-04-01), None

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