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IEICE Trans

Keyword : null-space expansion

Null-Space Expansion Applications to MIMO with Distributed Antennas
Makoto TAROMARU Hidekazu MURATA Masaharu ABIRU Yuki OHI Shohei KOBAYASHI Tatsuhiko IWAKUNI Daisei UCHIDA Takafumi FUJITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2026/04/01
Vol. E109-B  No. 4 ; pp. 490-499
Type of Manuscript:  INVITED PAPER (Special Section on Wired and Wireless Network System Technologies in Beyond 5G/6G Era)
Category: 
Keyword: 
MIMO, null-space expansion, fast fading, distributed antenna, 
 Summary | Full Text:PDF
Null-Space Expansion Applications to MIMO with Distributed Antennas
Makoto TAROMARU Hidekazu MURATA Masaharu ABIRU Yuki OHI Shohei KOBAYASHI Tatsuhiko IWAKUNI Daisei UCHIDA Takafumi FUJITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2026/04/01
Vol. E109-B  No. 4 ; pp. 490-499
Type of Manuscript:  INVITED PAPER (Special Section on Wired and Wireless Network System Technologies in Beyond 5G/6G Era)
Category: 
Keyword: 
MIMO, null-space expansion, fast fading, distributed antenna, 
 Summary | Full Text:PDF
Experimental Verification of Null-Space Expansion for Multiuser Massive MIMO via Channel State Information Measurement
Tatsuhiko IWAKUNI Kazuki MARUTA Atsushi OHTA Yushi SHIRATO Masataka IIZUKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2018/03/01
Vol. E101-B  No. 3 ; pp. 877-884
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
massive MIMO, multiuser MIMO, null-space expansion, channel time variation, inter-user interference, 
 Summary | Full Text:PDF
Null-Space Expansion for Multiuser Massive MIMO Inter-User Interference Suppression in Time Varying Channels
Tatsuhiko IWAKUNI Kazuki MARUTA Atsushi OHTA Yushi SHIRATO Takuto ARAI Masataka IIZUKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2017/05/01
Vol. E100-B  No. 5 ; pp. 865-873
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
inter-user interference, channel time variation, multiuser MIMO, massive MIMO, null-space expansion, 
 Summary | Full Text:PDF