Koshiro KITAO


Scattering Characteristics of the Human Body in 67-GHz Band
Ngochao TRAN Tetsuro IMAI Koshiro KITAO Yukihiko OKUMURA Takehiro NAKAMURA Hiroshi TOKUDA Takao MIYAKE Robin WANG Zhu WEN Hajime KITANO Roger NICHOLS 
Publication:   
Publication Date: 2018/06/01
Vol. E101-B  No. 6  pp. 1434-1442
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
5Gmillimeter wavesNLOS scenariosscattered waves by human bodiesradar cross section
 Summary | Full Text:PDF(4.4MB)

Frequency Dependency of Path Loss Between Different Floors in An Indoor Office Environment at UHF and SHF Bands
Motoharu SASAKI Minoru INOMATA Wataru YAMADA Naoki KITA Takeshi ONIZAWA Masashi NAKATSUGAWA Koshiro KITAO Tetsuro IMAI 
Publication:   
Publication Date: 2018/02/01
Vol. E101-B  No. 2  pp. 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: 
propagation5Gmillimeter waveUHFSHFhigh frequency bandsindoor officefloor penetration loss
 Summary | Full Text:PDF(8.2MB)

Improving Accuracy of Ray-Tracing Prediction in Non Line-of-Sight (NLOS) Urban Street Cell Environment beyond 6GHz
Nobutaka OMAKI Tetsuro IMAI Koshiro KITAO Yukihiko OKUMURA 
Publication:   
Publication Date: 2017/04/01
Vol. E100-B  No. 4  pp. 566-574
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
ray-tracing5G wireless network systemmicrocellular environmentSHFEHF
 Summary | Full Text:PDF(2.7MB)

Path Loss Model for Outdoor-to-Indoor Corridor Up to 40GHz Band in Microcell Environments
Minoru INOMATA Motoharu SASAKI Wataru YAMADA Takeshi ONIZAWA Masashi NAKATSUGAWA Nobutaka OMAKI Koshiro KITAO Tetsuro IMAI Yukihiko OKUMURA 
Publication:   
Publication Date: 2017/02/01
Vol. E100-B  No. 2  pp. 242-251
Type of Manuscript:  Special Section PAPER (Special Section on Antenna and Propagation Technologies Contributing to Realization of Next Generation Wireless Systems)
Category: 
Keyword: 
propagation5Goutdoor-to-indoor path loss modelmillimeter wavehigh frequency bandsmicrocell environments
 Summary | Full Text:PDF(2.7MB)

Cluster Power Variation Characteristics for 3GHz-Band MIMO Communication System in a Crowded Indoor Environment
Kentaro SAITO Tetsuro IMAI Koshiro KITAO Yukihiko OKUMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/05/01
Vol. E99-B  No. 5  pp. 1131-1142
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
MIMO channel modelcrowded environmenthuman body shadowingindoor environmentquasi-static environment
 Summary | Full Text:PDF(2.8MB)

Experimental Study on Ray Based Spatio-Temporal Channel Characteristics in Indoor Environment
Koshiro KITAO Tetsuro IMAI Kentaro SAITO Yukihiko OKUMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/05/01
Vol. E98-B  No. 5  pp. 798-805
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Radio Propagation)
Category: 
Keyword: 
indoor channel modelspatio - temporal channelvector channel sounder
 Summary | Full Text:PDF(2.3MB)

Polarization Dispersion Characteristics of Propagation Paths in Urban Mobile Communication Environment
Tetsuro IMAI Koshiro KITAO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/10/01
Vol. E96-B  No. 10  pp. 2380-2388
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012)
Category: Radio Propagation
Keyword: 
MIMOpolarizationpropagation modelmobile propagation
 Summary | Full Text:PDF(2.8MB)

Dynamic Channel Modeling Using Particle Filtering for Wireless MIMO Systems in Urban Environment
Kentaro SAITO Koshiro KITAO Tetsuro IMAI Yukihiko OKUMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/10/01
Vol. E96-B  No. 10  pp. 2372-2379
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012)
Category: Radio Propagation
Keyword: 
MIMOchannel modeltime-variant channelcluster-based channel modelparticle filter
 Summary | Full Text:PDF(3MB)

Interference Rejection Characteristics by Adaptive Array at User Equipment Using Measured K-Factor in Heterogeneous Networks
Kentaro NISHIMORI Keisuke KUSUMI Misaki HORIO Koshiro KITAO Tetsuro IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/06/01
Vol. E96-B  No. 6  pp. 1256-1264
Type of Manuscript:  Special Section PAPER (Special Section on Heterogeneous Networks for Future Cellular Systems)
Category: 
Keyword: 
heterogeneous networksadaptive arrayuser equipmentK-factorzero forcing
 Summary | Full Text:PDF(1.9MB)

Evolution Trends of Wireless MIMO Channel Modeling towards IMT-Advanced
Chia-Chin CHONG Fujio WATANABE Koshiro KITAO Tetsuro IMAI Hiroshi INAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/09/01
Vol. E92-B  No. 9  pp. 2773-2788
Type of Manuscript:  INVITED SURVEY PAPER
Category: 
Keyword: 
channel modelIMT-AdvancedMIMOmultipathspatial diversityspatial multiplexing
 Summary | Full Text:PDF(1.1MB)

Analysis of Incoming Wave Distribution in Vertical Plane in Urban Area and Evaluation of Base Station Antenna Effective Gain
Koshiro KITAO Tetsuro IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/06/01
Vol. E92-B  No. 6  pp. 2175-2181
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
mobile radiopower angle profileangle spreadmean angleantenna effective gain
 Summary | Full Text:PDF(1.3MB)

Path Loss Prediction Formula in Urban Area for the Fourth-Generation Mobile Communication Systems
Koshiro KITAO Shinichi ICHITSUBO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/06/01
Vol. E91-B  No. 6  pp. 1999-2009
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
mobile radiopath lossthe fourth-generation mobile communication systemsmicrocell
 Summary | Full Text:PDF(2.1MB)