IEEE 802.11 wireless LAN implemented on software defined radio with hybrid programmable architecture
Shono, T., Shirato, Y., Shiba, H., Uehara, K., Araki, K., Umehira, M.
Published in IEEE transactions on wireless communications (01.09.2005)
Published in IEEE transactions on wireless communications (01.09.2005)
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Journal Article
Broadband multiple satellite MIMO system
Yamashita, F., Kobayashi, K., Ueba, M., Umehira, M.
Published in VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005 (2005)
Published in VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005 (2005)
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Conference Proceeding
Wireless communications in the twenty-first century: a perspective
Shafi, M., Hashimoto, A., Umehira, M., Ogose, S., Murase, T.
Published in Proceedings of the IEEE (01.10.1997)
Published in Proceedings of the IEEE (01.10.1997)
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Journal Article
A compact tri-band and tetra-band short helical antenna electromagnetically coupled feed by a loop antenna
Suganuma, A., Kagoshima, K., Takeda, S., Umehira, M.
Published in 2015 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) (01.09.2015)
Published in 2015 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) (01.09.2015)
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Conference Proceeding
Propagation factors controlling mean field strength on urban streets
Ikegami, F., Yoshida, S., Takeuchi, T., Umehira, M.
Published in IEEE transactions on antennas and propagation (01.08.1984)
Published in IEEE transactions on antennas and propagation (01.08.1984)
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Journal Article
A multiband antenna composed of helical elements for sensor networks
Suganuma, A., Kagoshima, K., Takeda, S., Umehira, M.
Published in 2014 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) (01.08.2014)
Published in 2014 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) (01.08.2014)
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Conference Proceeding
Wireless LAN and MMAC, what are they and where are they going ?
Umehira, Masahiro
Published in The Journal of The Institute of Image Information and Television Engineers (20.02.2001)
Published in The Journal of The Institute of Image Information and Television Engineers (20.02.2001)
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Journal Article
Satellite communication system integrated into terrestrial ISDN
Otsu, T., Nagayama, K., Kurokawa, A., Nakashima, H., Umehira, M.
Published in IEEE transactions on aerospace and electronic systems (01.10.2000)
Published in IEEE transactions on aerospace and electronic systems (01.10.2000)
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Journal Article
Precise AFC scheme for performance improvement of SDM-COFDM
Asai, Y., Kurosaki, S., Sugiyama, T., Umehira, M.
Published in Proceedings IEEE 56th Vehicular Technology Conference (2002)
Published in Proceedings IEEE 56th Vehicular Technology Conference (2002)
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Conference Proceeding
A fast modulation recognition technique using nearest neighbor rules with optimized threshold for modulation classification in Rayleigh fading channels
Yoshioka, H., Shirato, Y., Toyoda, I., Umehira, M.
Published in The 5th International Symposium on Wireless Personal Multimedia Communications (2002)
Published in The 5th International Symposium on Wireless Personal Multimedia Communications (2002)
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Conference Proceeding
Experimental performance evaluation of SDM-COFDM prototype using hierarchical ICI canceller for MIMO-based broadband wireless access systems
Sugiyama, T., Kurosaki, S., Asai, Y., Uchida, D., Umehira, M.
Published in 2004 IEEE 59th Vehicular Technology Conference. VTC 2004-Spring (IEEE Cat. No.04CH37514) (2004)
Published in 2004 IEEE 59th Vehicular Technology Conference. VTC 2004-Spring (IEEE Cat. No.04CH37514) (2004)
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Conference Proceeding
Hierarchical ICI canceller for a novel SDM-COFDM Scheme
Asai, Y., Uchida, D., Kurosaki, S., Sugiyama, T., Umehira, M.
Published in 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484) (2003)
Published in 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484) (2003)
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Conference Proceeding
ATM wireless access for mobile multimedia: concept and architecture
Umehira, M., Nakura, M., Sato, H., Hashimoto, A.
Published in IEEE personal communications (01.10.1996)
Published in IEEE personal communications (01.10.1996)
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Journal Article
A new satellite communication system integrated into public switched networks-DYANET
Ohnuki, M., Umehira, M., Nakashima, H., Kato, S.
Published in IEEE journal on selected areas in communications (01.02.1992)
Published in IEEE journal on selected areas in communications (01.02.1992)
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Journal Article
A TDMA satellite communication system for ISDN services
Kato, S., Morikura, M., Kubota, S., Kazama, H., Enomoto, K., Umehira, M.
Published in IEEE journal on selected areas in communications (01.02.1992)
Published in IEEE journal on selected areas in communications (01.02.1992)
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Journal Article
Application of advanced microelectronics to large-scale communication equipment-compact and maintenance-free TDMA equipment
Kato, S., Morikura, M., Umehira, M., Enomoto, K., Kubota, S.
Published in IEEE journal on selected areas in communications (01.10.1990)
Published in IEEE journal on selected areas in communications (01.10.1990)
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Journal Article
Conference Proceeding