The invention relates to a radio system including transceivers. One of the
transceivers includes, for instance, a device for comparing a parameter
representing signal quality measured from the received signal with at
least one threshold value and a device for determining a quality class
for the performance of a MIMO common channel. At least one of the
transceivers includes a device for storing the observations made by the
second transceiver about the quality class transitions of the transfer
channel of the first transceiver and a device for estimating the next
quality class of the transfer channel of the first transceiver from the
stored quality class transition observations.