Method of reducing the effect of narrowband jammers in radio com

Details Method of reducing the effect of narrowband jammers in radio com Method of reducing the effect of narrowband jammers in radio com

1985-11-08

1987-12-29

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375109, 455 69, H04K 100

Patent

active

047165731

ABSTRACT:
A method for reducing the effect of narrowband jammers in communication between two stations utilising frequency hopping. A new frequency at a hop is not selected merely with the aid of random number generation, but also with learnt knowledge of the radio communication surroundings affecting the selection. The frequencies (f.sub.l . . . f.sub.n) available for frequency hopping are stored with different status in a list (X). The status of the different frequencies is determined by quality measurement of the channel selected in a radio communication, and by examining the status of the selected frequency (f.sub.x) in relation to the status of the remaining frequencies (f.sub.l . . . f.sub.n).

REFERENCES:
patent: 2862203 (1958-11-01), Skaraeus et al.
patent: 3934224 (1976-01-01), DuLaney et al.
patent: 4004098 (1977-01-01), Shimasaki
patent: 4271524 (1981-06-01), Goodman et al.
patent: 4309771 (1982-01-01), Wilkens
patent: 4355399 (1982-10-01), Timor

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