| 摘要 |
PURPOSE: To set a route of demodulated data to be transmitted to a user terminal at a destination, to remodulate the data by multiplexing it again, to generate plural sets of polarized interleave transmission beams and to transmit the remodulated data to the terminal at the destination by one transmission beam. CONSTITUTION: Input data generated by the user terminal 11 are multiplexed by frequency division and transmitted to a satellite relay system 13. The data are demodulated, the route of the data is set, the data of a frequency domain are remodulated by communicating with a second terminal 12 by the set route and re-transmitted on the beam to transmit time-division multiplexed data to the second terminal 12 by the system 13. And high performance digital data flow is re-generated on a device 30 of a satellite to communicate with the terminal 12 so that an adverse effect of uplink interference is reduced by demodulation and remodulation stages of a signal obtained from the terminal 11. Therefore, a number of users to be supported by an effective band width and a system 10 are increased, e.g. by 12 folds by reuse of double polarized wave and spaces of transmission and reception beams. |
