Indoor micro cell area prediction system using ray-tracing for mobile communication systems. - Tetsuro Imai; Teruya Fujii (PIMRC, 1996)

Delay profile measurement system using common pilot channel for W-CDMA cellular system. - Tetsuro Imai; Shinichi Mori (VTC Fall, 2001)

Wideband Directional Radio Propagation Channel Analysis Inside an Arched Tunnel. - Gilbert Siy Ching; Mir Ghoraishi; Navarat Lertsirisopon; Jun-ichi Takada; Tetsuro Imai; Itoji Sameda; Hironori Sakamoto (PIMRC, 2006)

A Pseudo-Geometrical Channel Model for Dense Urban Line-of-Sight Street Microcell. - Mir Ghoraishi; Jun-ichi Takada; Tetsuro Imai (PIMRC, 2006)

Statistical scattering model in urban propagation environment. - Tetsuro Imai; Tokio Taga (IEEE Trans. Veh. Technol., 2006)

A Path Shadowing Model Focused on the Effects of Human Activities in Indoor Environments. - Ippei Kashiwagi; Tokio Taga; Tetsuro Imai (VTC Fall, 2007)

Analysis of Polarization Diversity Gain at Base Station in W-CDMA System. - Masaru Fukushige; Tetsurou Imai (IEICE Trans. Commun., 2007)

Analysis of DSRC Service Over-Reach inside an Arched Tunnel. - Gilbert Siy Ching; Mir Ghoraishi; Navarat Lertsirisopon; Jun-ichi Takada; Itoji Sameda; Hironori Sakamoto; Tetsuro Imai (IEEE J. Sel. Areas Commun., 2007)

Radio channel simulation for microcell line-of-sight scenario. - Mir Ghoraishi; Jun-ichi Takada; Tetsuro Imai (IEICE Electron. Express, 2008)

Performance comparison of the 3GPP/3GPP2 SCM and ITU-R IMT-Advanced MIMO channel models. - Chia-Chin Chong; Fujio Watanabe; Hiroshi Inamura; Koshiro Kitao; Tetsuro Imai (PIMRC, 2009)

Evolution Trends of Wireless MIMO Channel Modeling towards IMT-Advanced. - Chia-Chin Chong; Fujio Watanabe; Koshiro Kitao; Tetsuro Imai; Hiroshi Inamura (IEICE Trans. Commun., 2009)

Analysis of Incoming Wave Distribution in Vertical Plane in Urban Area and Evaluation of Base Station Antenna Effective Gain. - Koshiro Kitao; Tetsuro Imai (IEICE Trans. Commun., 2009)

Time-Varying Path-Shadowing Model for Indoor Populated Environments. - Ippei Kashiwagi; Tokio Taga; Tetsuro Imai (IEEE Trans. Veh. Technol., 2010)

Experimental Parameter Evaluation for Indoor Polarized MIMO Channel. - Atsushi Kunikata; Tetsuro Imai; Koshiro Kitao (VTC Fall, 2011)

Interference Cancellation Using Relay Station in Heterogeneous Networks. - Kentaro Nishimori; Koshiro Kitao; Tetsuro Imai (VTC Fall, 2011)

Hybrid-Based Propagation Parameter Estimation Method Using EM/SAGE and Extended MODE Algorithm. - Kentaro Saito; Tetsuro Imai; Koshiro Kitao; Yoshiki Okano; Shunji Miura (VTC Fall, 2011)

The Modeling Method of Time-Correlated MIMO Channels Using the Particle Filter. - Kentaro Saito; Koshiro Kitao; Tetsuro Imai; Yoshiki Okano; Shunji Miura (VTC Spring, 2011)

Development and Experimental Evaluation of Cyclostationarity-Based Signal Identification Equipment for Cognitive Radios. - Hiroki Harada; Hiromasa Fujii; Shunji Miura; Hidetoshi Kayama; Yoshiki Okano; Tetsuro Imai (IEICE Trans. Commun., 2012)

Elevation directional channel properties at BS to evaluate 3D beamforming. - Koshiro Kitao; Tetsuro Imai; Kentaro Saito; Yukihiko Okumura (ISPACS, 2013)

Performance Evaluation of Adaptive Array Using ZF and MMSE Algorithms with Measured K-Factor and Correlation in Heterogeneous Networks. - Kentaro Nishimori; Keisuke Kusumi; Misaki Horio; Koshiro Kitao; Tetsuro Imai (VTC Fall, 2013)

Polarization Dispersion Characteristics of Propagation Paths in Urban Mobile Communication Environment. - Tetsuro Imai; Koshiro Kitao (IEICE Trans. Commun., 2013)

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 (IEICE Trans. Commun., 2013)

Dynamic Channel Modeling Using Particle Filtering for Wireless MIMO Systems in Urban Environment. - Kentaro Saito; Koshiro Kitao; Tetsuro Imai; Yukihiko Okumura (IEICE Trans. Commun., 2013)

Cluster Power Variation Estimation for MIMO Channel Modeling in Crowded Indoor Environment. - Kentaro Saito; Tetsuro Imai; Koshiro Kitao; Yukihiko Okumura (VTC Fall, 2014)

2 GHz Band MIMO Channel Properties in Urban Small Cell Scenario in Crowded Area. - Kentaro Saito; Tetsuro Imai; Yukihiko Okumura (VTC Fall, 2014)

Study on Characteristics of Human Body Shadowing in High Frequency Bands: Radio Wave Propagation Technology for Future Radio Access and Mobile Optical Networks. - Ngochao Tran; Tetsuro Imai; Yukihiko Okumura (VTC Fall, 2014)

Path loss prediction model for 800 MHz to 37 GHz in NLOS microcell environment. - Koshiro Kitao; Tetsuro Imai; Ngochao Tran; Nobutaka Omaki; Yukihiko Okumura; Minoru Inomata; Motoharu Sasaki; Wataru Yamada (PIMRC, 2015)

Interference Reduction Characteristics by Circular Array Based Massive MIMO in a Real Microcell Environment. - Ryochi Kataoka; Kentaro Nishimori; Ngochao Tran; Tetsuro Imai; Hideo Makino (IEICE Trans. Commun., 2015)

Experimental Study on Ray Based Spatio-Temporal Channel Characteristics in Indoor Environment. - Koshiro Kitao; Tetsuro Imai; Kentaro Saito; Yukihiko Okumura (IEICE Trans. Commun., 2015)

5G Radio Access: Requirements, Concept and Experimental Trials. - Takehiro Nakamura; Anass Benjebbour; Yoshihisa Kishiyama; Satoshi Suyama; Tetsuro Imai (IEICE Trans. Commun., 2015)

Path Loss Variation Characteristics at 26GHz Band in Street Microcell Environment. - Motoharu Sasaki; Wataru Yamada; Takatoshi Sugiyama; Tetsuro Imai (IEICE Trans. Commun., 2015)

Model for Estimating Effects of Human Body Shadowing in High Frequency Bands. - Ngochao Tran; Tetsuro Imai; Yukihiko Okumura (IEICE Trans. Commun., 2015)

Indoor 5G 3GPP-like channel models for office and shopping mall environments. - Katsuyuki Haneda; Lei Tian 004; Henrik Asplund; Jian Li 058; Yi Wang 004; David Steer; Clara Li; Tommaso Balercia; Sunguk Lee; YoungSuk Kim; Amitava Ghosh; Timothy A. Thomas; et al. (ICC Workshops, 2016)

5G 3GPP-Like Channel Models for Outdoor Urban Microcellular and Macrocellular Environments. - Katsuyuki Haneda; Lei Tan; Yi Zheng; Henrik Asplund; Jian Li 058; Yi Wang 004; David Steer; Clara Li; Tommaso Balercia; Sunguk Lee; YoungSuk Kim; Amitava Ghosh; et al. (VTC Spring, 2016)

5G 3GPP-like Channel Models for Outdoor Urban Microcellular and Macrocellular Environments. - Katsuyuki Haneda; Lei Tian 004; Yi Zheng; Henrik Asplund; Jian Li 058; Yi Wang 004; David Steer; Clara Li; Tommaso Balercia; Sunguk Lee; YoungSuk Kim; Amitava Ghosh; et al. (CoRR, 2016)

Cluster Power Variation Characteristics for 3GHz-Band MIMO Communication System in a Crowded Indoor Environment. - Kentaro Saito; Tetsuro Imai; Koshiro Kitao; Yukihiko Okumura (IEICE Trans. Commun., 2016)

Frequency Dependence of Path Loss with Wide Dynamic Range in Urban Macro Cells between 2 and 26 GHz. - Motoharu Sasaki; Mitsuki Nakamura; Minoru Inomata; Wataru Yamada; Naoki Kita; Koshiro Kitao; Tetsuro Imai; Yasushi Takatori (GLOBECOM Workshops, 2017)

Frequency dependence of site-specific path loss in urban macro cell environments between 2 and 66 GHz bands. - Motoharu Sasaki; Mitsuki Nakamura; Minoru Inomata; Wataru Yamada; Naoki Kita; Yasushi Takatori; Koshiro Kitao; Tetsuro Imai (PIMRC, 2017)

A Survey of Efficient Ray-Tracing Techniques for Mobile Radio Propagation Analysis. - Tetsuro Imai (IEICE Trans. Commun., 2017)

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 (IEICE Trans. Commun., 2017)

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 (IEICE Trans. Commun., 2017)

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 (IEICE Trans. Commun., 2018)

Path Loss Model Considering Blockage Effects of Traffic Signs Up to 40GHz in Urban Microcell Environments. - Motoharu Sasaki; Minoru Inomata; Wataru Yamada; Naoki Kita; Takeshi Onizawa; Masashi Nakatsugawa; Koshiro Kitao; Tetsuro Imai (IEICE Trans. Commun., 2018)

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 (IEICE Trans. Commun., 2018)

Downlink Performance Using Vehicle Glass Mounted Antenna for 28-GHz Band in High Mobility Environment. - Minoru Inomata; Tetsuro Imai; Toshiki Sayama; Osamu Kagaya; Shoji Itoh; Hideshi Murai; Daisuke Kitayama; Hideaki Shoji; Shoichi Takeuchi; Kiyoshi Nobuoka; Arne Simonsson; Peter Ökvist (VTC Spring, 2019)

Study on Path Identification at 40 GHz Band in NLOS Urban Street Cell Environment. - Koshiro Kitao; Tetsuro Imai; Minoru Inomata; Yukihiko Okumura; Takehiro Nakamura; Kiyoshi Yanagisawa; Taro Eichler; Wilhelm Keusgen (WCNC, 2019)

5G Radio Access Experiments on Distributed MIMO Deployment for Straightly Traveling Mobile Station with Beamforming in 28-GHz Frequency Band. - Daisuke Kitayama; Arne Simonsson; Peter Ökvist; Daisuke Kurita; Minoru Inomata; Kiichi Tateishi; Atsushi Harada; Tetsuro Imai; Yoshihisa Kishiyama; Shoji Itoh; Hideshi Murai (WCNC Workshops, 2019)

Radio Propagation Prediction Method Using Point Cloud Data Based on Hybrid of Ray-Tracing and Effective Roughness Model in Urban Environments. - Minoru Inomata; Tetsuro Imai; Koshiro Kitao; Yukihiko Okumura; Motoharu Sasaki; Yasushi Takatori (IEICE Trans. Commun., 2019)

High Speed Mobility Experiments on Distributed MIMO Beamforming for 5G Radio Access in 28-GHz Band. - Daisuke Kitayama; Kiichi Tateishi; Daisuke Kurita; Atsushi Harada; Minoru Inomata; Tetsuro Imai; Yoshihisa Kishiyama; Hideshi Murai; Shoji Itoh; Arne Simonsson; Peter Ökvist (IEICE Trans. Commun., 2019)

Path Loss Model in Crowded Outdoor Environments Considering Multiple Human Body Shadowing of Multipath at 4.7GHz and 26.4GHz. - Mitsuki Nakamura; Motoharu Sasaki; Wataru Yamada; Naoki Kita; Takeshi Onizawa; Yasushi Takatori; Masashi Nakatsugawa; Minoru Inomata; Koshiro Kitao; Tetsuro Imai (IEICE Trans. Commun., 2019)

Extension of ITU-R Site-General Path Loss Model in Urban Areas Based on Measurements from 2 to 66GHz Bands. - Motoharu Sasaki; Mitsuki Nakamura; Nobuaki Kuno; Wataru Yamada; Naoki Kita; Takeshi Onizawa; Yasushi Takatori; Hiroyuki Nakamura; Minoru Inomata; Koshiro Kitao; Tetsuro Imai (IEICE Trans. Commun., 2021)

Radio Propagation Analysis Using Quantum Annealing. - Tetsuro Imai; Wataru Yamada; Minoru Inomata; Nobuaki Kuno (GLOBECOM, 2022)

Ray Tracing Parameter Optimization System in Mobile Radio Propagation Prediction. - Miyuki Hirose; Tetsuro Imai; Shengyi Wu; Satoshi Iwasaki; Gilbert Siy Ching; Yukiko Kishiki (PIMRC, 2022)

Measurement and Ray Tracing Simulation with Urban Microcell Environments at 28GHz Band. - Hirokazu Yamakura; Gilbert Siy Ching; Yukiko Kishiki; Noboru Sekino; Ichiro Oshima; Tetsuro Imai (IEICE Trans. Commun., 2022)

Directional beam antenna control in response to drone tilts. - Chikayo Hata; Takefumi Hiraguri; Takahiro Matsuda 001; Tetsuro Imai; Jiro Hirokawa (ICCE-Taiwan, 2023)