| 摘要 |
PURPOSE:To improve the utilizing efficiency of frequency by dividing a signal of a base station into plural frequency groups, receiving each group by plural receivers having different local oscillation frequency and arranging the frequency group of the output of the receivers in an interleaving way. CONSTITUTION:The signal from the base station received by a base station antenna 8 is divided and inputted to frequency converters 17-1, 17-2 of the different local oscillation frequency. As a result, channels of groups A, B are arranged in an interleave way in each RF channel of the groups A, B in the satellite transmission spectrum as shown in (b). Thus, the output spectrums of the receivers 4-1, 4-2 are shown in (c), (d). Only the channel corresponding to the transmission channel is extracted from the signals by branching devices 5-1, 5-2. Thus, the distance between channels is widened substantially and the utilizing rate of the frequency is improved.
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