A digital radio link system and a method of adjusting the transmission power in a digital radio link system

The invention relates to a digital radio link system and a method of adjusting the trans­mission power in a digital radio link system. The system comprises at a receiving end (2) a first means (11) for monitoring the error rate estimate and for producing a first control signal (Serr) if the error rate estimate exceeds a predetermined threshold value. At a trans­mitting end (1) the system comprises means (4) for adjusting the transmission power, said means responding to the occurrence of the first control signal (Serr) by increasing the trans­mission power. In the system of the invention there is further provided at the receiving end a second means (9) for monitoring the rate of change of the received signal level and for producing a second control signal (Smp) if the rate of change exceeds a predetermined threshold value. The means (4) for adjusting the trans­mission power respond to the occurrence of the first (Serr) or the second (Smp) control signal by increasing the transmission power temporarily close to the maximum transmission power.