| 摘要 |
PROBLEM TO BE SOLVED: To provide a comparatively small and low-cost communication satellite by improving the usage efficiency of frequency in feeder link. SOLUTION: The communication satellite includes: a first transmitting/ receiving apparatus for performing communication with an earth base station through the feeder link through the use of two polarized waves different in polarized wave characteristic, concerning a plurality of first frequency resources arranged at prescribed interval on a frequency axis and a plurality of second frequency resources arranged no to be superimposed on the first frequency resources; a second transmitting/receiving apparatus for performing communication with a user in a service area through a service link; and an assigning means for relating each of beams forming the service link to the first and the second frequency resources. The individual band width of the first and second frequency resources is larger than that of a channel to be assigned to the user, and smaller than that required in the service link. COPYRIGHT: (C)2003,JPO
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