Advanced high capacity domestic satellite communications system |
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Authors: | Akio Iso Kenji Kohiyama Hitoshi Odate Noriaki Ishida |
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Institution: | Yokosuka Electrical Communication Laboratory, Nippon Telegraph and Telephone Public Corporation, 1-2356, Take, Yokosuka, 238-03, Japan |
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Abstract: | This paper describes a concept of multibeam high capacity transmission possible with a 30/20 GHz and 50/40 GHz domestic satellite communication system. The relationship between satellite antenna pointing accuracy and multi-beam antenna interference, as well as the relationship between satellite antenna pointing accuracy and multi-satellite interference are looked at.The ultra high capacity domestic satellite communication system will have multi-beam antennas with a 76.0 dB at both 20 GHz and 40 GHz. These antennas will provide 4950 beams that approximately correspond to the number of end office of the Japanese telephone network, and have a pointing accuracy of 0.005 degrees. This system will be equipped with 9900 30/20 GHz and 50/40 GHz transponder channels with bit rates of 800 Mbps. Its capacity will be 119 Tbps through use of 15 large communication satellite platforms. |
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