Tatsuhiko IWAKUNI


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:   
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 interferencechannel time variationmultiuser MIMOmassive MIMOnull-space expansion
 Summary | Full Text:PDF(2.2MB)

Antenna Array Arrangement for Massive MIMO to Reduce Channel Spatial Correlation in LOS Environment
Takuto ARAI Atsushi OHTA Yushi SHIRATO Satoshi KUROSAKI Kazuki MARUTA Tatsuhiko IWAKUNI Masataka IIZUKA 
Publication:   
Publication Date: 2017/04/01
Vol. E100-B  No. 4  pp. 594-601
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
massive MIMOmulti-user MIMOantenna arrangementline of sightspatial correlation
 Summary | Full Text:PDF(2.8MB)

Analysis of Wireless Channel Capacity in RoF-DAS over WDM-PON System
Tatsuhiko IWAKUNI Kenji MIYAMOTO Takeshi HIGASHINO Katsutoshi TSUKAMOTO Shozo KOMAKI Takayoshi TASHIRO Youichi FUKADA Jun-ichi KANI Naoto YOSHIMOTO Katsumi IWATSUKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/02/01
Vol. E96-C  No. 2  pp. 171-179
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Photonics Technology)
Category: 
Keyword: 
RoFDASbackhaul networkOTDMWDM-PONMIMO
 Summary | Full Text:PDF(3.6MB)