Maki ARAI


Optimal Design Method of MIMO Antenna Directivities and Corresponding Current Distributions by Using Spherical Mode Expansion
Maki ARAI Masashi IWABUCHI Kei SAKAGUCHI Kiyomichi ARAKI 
Publication:   
Publication Date: 2017/10/01
Vol. E100-B  No. 10  pp. 1891-1903
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
MIMOantenna directivityantenna structurecurrent distributionspherical mode expansioncapacity maximization
 Summary | Full Text:PDF(2.3MB)

Alignment Tolerance in Multiple-Stream Transmission Using Orthogonal Directivities under Line-of-Sight Environments
Maki ARAI Tomohiro SEKI Ken HIRAGA Kazumitsu SAKAMOTO Tadao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/06/01
Vol. E99-B  No. 6  pp. 1362-1370
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
MIMOdirectivityspatial divisionchannel capacity
 Summary | Full Text:PDF(2.3MB)

Orthogonalized Directional MIMO Transmission Using Higher Order Mode Microstrip Antennas
Maki ARAI Tomohiro SEKI Ken HIRAGA Kazumitsu SAKAMOTO Hideki TOSHINAGA Tadao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/01/01
Vol. E99-B  No. 1  pp. 48-57
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas, Propagation and Wireless Systems Related to Topics in ISAP2014)
Category: Antennas and Propagation
Keyword: 
MIMOdirectivityhigher order modecapacity
 Summary | Full Text:PDF(3.5MB)

Spatial Division Transmission without Signal Processing for MIMO Detection Utilizing Two-Ray Fading
Ken HIRAGA Kazumitsu SAKAMOTO Maki ARAI Tomohiro SEKI Tadao NAKAGAWA Kazuhiro UEHARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/11/01
Vol. E97-B  No. 11  pp. 2491-2501
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
spatial division transmissionarray a ntennasparallel transmissionline-of-sight (LOS)two-ray ground reflection modelreflection coefficientpolarization
 Summary | Full Text:PDF(2.6MB)