About OGAWA HIROYO
About 情報通信研究機構
About 電子情報通信学会技術研究報告
About ITU-R
About spectrum
About radio transmission
About submillimeter wave
About land mobile communication
About frequency band
About international conference
About terahertz wave
About frequency allocation
About research direction
About Communication engineering and communication enterprise in general
About ITU-R
About スペクトラム
About 研究
About 動向
About 無線通信
About 規則
About 業務
About 応用
About 周波数帯