Publication: Publication Date: 2018/02/01 Vol. E101-BNo. 2pp. 373-382 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016) Category: Propagation Keyword: propagation, 5G, millimeter wave, UHF, SHF, high frequency bands, indoor office, floor penetration loss,