| 摘要 |
Method and apparatus for measuring the strength of a high frequency signal. The strength of a high frequency signal is read-off two or more times at predetermined intervals and the read-off value which is the largest is selected. The selected signal strength is a reasonably precise measurement of the signal strength, as the actual average value for the strength of a signal which is affected by Rayleigh fading is close to the peak value of the signal strength. The method and apparatus according to the invention are particularly suited for use in a scanning receiver in a base station in a cellular radio communication system. The scanning receiver comprises an antenna selector 102 for selection of one sector antenna from among several, a high frequency receiver 104 which can be tuned to several different signal frequencies, an analogue-digital converter 106 which converts the read-off signal strengths to a binary data signal and a microprocessor 114 with peripheral equipment 108, 110, 112, 116, 118, 120 for controlling the operation of the antenna selector 102, the receiver 104 and the analogue-digital converter. <IMAGE>
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