Method of reducing the effect of narrowband jammers in radio communication between two stations.

摘要

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>1</Sub>...f<Sub>n</Sub>) 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</Sub>) in relation to the status of the remaining frequencies (f<Sub>1</Sub>...f<Sub>n</Sub>).