Koshiro KITAO


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)