Frequency hopping radio communications apparatus having pseudo-r

Details Frequency hopping radio communications apparatus having pseudo-r Frequency hopping radio communications apparatus having pseudo-r

1982-06-08

1984-10-09

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 22, 370 93, H04B 712, H04J 600

Patent

active

044765665

ABSTRACT:
Channel selection in a frequency hopping radio set is controlled by a pseudo-random number generator, the pseudo-random number being used to address an N bit memory (3) which is used to identify each of n available channels from N equipped channels. When a preselected number of the n channels have been identified by the psuedo-random number generator a latch (4) is enabled to store the channel number for selection purposes. Various scrambling methods are employed so that the channels on which one network of radio sets is operating is not readily identifiable from the channels on which another network of radio sets is operating.

REFERENCES:
patent: 4271524 (1981-06-01), Goodman et al.
patent: 4320514 (1982-03-01), Haskell
patent: 4355399 (1982-10-01), Timor
patent: 4383323 (1983-05-01), Timor
patent: 4392231 (1983-07-01), Henry

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