Verfahren zur Verbesserung der Leistung eines GSM Erzeuger von Frequenzsprungsequenzen für Kanälen mit halb und viertel Rat

The present invention solves the aforementioned problem of decreased signal performance which occurs during half rate and lower channel relative to full rate channel by dividing the position number of the frame (the frame number) by the frequency hopping rate, rounding the resultant down to the nearest integer and using the new integer as the frame number to obtain the carrier frequency for the time slot of the upcoming frame. Stated as a relationship, f1_1 = fn/x where fn is the position number of the upcoming frame and f1_n is the position number of the frame that is to be used to determine the actual carrier frequency that is to be used for the time slot of the upcoming frame fn, and x is the channel rate. With cyclic hopping, the above relationship is valid in those instances where the number of carrier frequencies and the reciprocal of the channel hopping rate have a common divisor.