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Masahiro Agu
Department of Media and Telecommunications Engineering, Faculty of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511
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Hideo Akabane
Department of Media and Telecommunications Engineering, Faculty of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511
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Takeshi Saito
Satellite Venture Business Laboratory, Ibaraki University, Hitachi, Ibaraki 316-8511