| 摘要 |
PURPOSE:To suppress the influence of a noise on a channel to be used at minimum by selecting and allocating the channel in which the increment of a noise quantity on an existing channel and that on its own channel based on a noise distribution pattern stored in advance. CONSTITUTION:A control information storage unit 5 stores the frequency of the channel in current use, the satellite input level of the frequency, the patterns of an inter-different polarization interference noise quantity and an inter-another satellite interference noise quantity, and general noise distribution including a cross modulation noise quantity found from the pattern. When channel allocation information is inputted, the frequency to be allocated next is selected based on the information stored in the control information storage unit 5 so as to minimize a general S/N for its own channel and the channel in current use, and a channel allocation signal is sent to a transmission equipment 7. In such a way, it is possible to select the channel possible to minimize the influence of the noise quantity on the channel to be set, and to set the channel with quality higher than ever. |
