| 摘要 |
<p>In a radio communication station having N antennas an antenna diversity system and a gain controllable amplifier the gain of the gain controllable amplifier is set by using a first antenna, the signal levels of signals received at the antennas is measured, a group of antennas is determined having a signal level which exceeds the signal level of the first antenna by no more than a predetermined value (X), and out of said group of antennas the antenna with the highest signal level is selected out or the first antenna is selected out if said group is empty.
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