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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SR | 2019-12-05 16:40 |
Okinawa | Ishigaki City Hall (Ishigaki Island) | [Invited Talk]
Review of Microwave Mobile Propagation Study in Urban Environment
-- Measurement Campaign in Ishigaki City -- Jun-ichi Takada (Tokyo Tech)  SR2019-99 |
In this talk, the author reviews the outcome of ``R & D of Elemental Technologies for Super High Bit-Rate Mobile Communi... [more] | SR2019-99 pp.61-62 |
| AP | 2015-12-10 14:45 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | [Memorial Lecture]
Radiowave Propagation: Physical Phenomenon and its Modelling
-- Revisit to pioneering works -- Yoshio Karasawa (UEC) AP2015-159 |
For revisiting pioneering works on radio propagation research in Japan with our respect, we highlight the following topi... [more] | AP2015-159 pp.27-32 |
| AP, RCS, WPT, SAT (Joint) |
2015-11-04 16:30 |
Okinawa | Okinawa Prefectural Museum & Art Museum | A Study of LOS Rate Applicability for Sloping Terrain Correction Equation in Urban Path Loss Estimation Formula Kohei Ohnishi, Kazuki Shimada, Shigeru Tomisato, Masaharu Hata (Okayama Univ.) AP2015-123 |
As one of the effective path loss estimation method for small sloping area, the elevation angle correction method has be... [more] | AP2015-123 pp.77-82 |
| AP, SANE (Joint) |
2015-08-28 13:45 |
Ibaraki | Ibaragi Univ. Mito Campus | Analysis of Shadow Fading in Mobile Radio
-- Autocorrelation Mechanism of Received Level Variation approximated with Exponential Function -- Teruya Fujii, Hideki Omote (Softbank) AP2015-74 |
The propagation variation in mobile radio can divide into three independent variations; instantaneous fading (Rayleigh f... [more] | AP2015-74 pp.77-82 |
| AP | 2015-07-31 11:20 |
Hokkaido | Wakkanai Sougou Bunka Center | Accuracy Improvement of Ray-Tracing Method with Rounded-Shape (RS) Model for Non Line-Of-Site (NLOS) Route in Street Cell Environment
-- Consideration of Building Shape and Surface Roughness -- Nobutaka Omaki, Koshiro Kitao, Tetsuro Imai, Yukihiko Okumura (DOCOMO) AP2015-54 |
In 5G mobile communication system, it is one of the most important issues to clarify the propagation characteristics in ... [more] | AP2015-54 pp.83-88 |
| AP | 2015-07-31 13:10 |
Hokkaido | Wakkanai Sougou Bunka Center | A Study of LOS Rate Definition for Sloping Terrain Correction Equation in Urban Path Loss Estimation Formula Kohei Ohnishi, Jumpei Miki, Shigeru Tomisato, Masaharu Hata (Okayama Univ.) AP2015-56 |
As one of the effective path loss estimation method for small sloping area, the elevation angle correction method is pro... [more] | AP2015-56 pp.95-100 |
| AP | 2015-03-20 13:10 |
Fukui | Fukui University, Bunkyou Campus | Analysis of Shadow Fading in Mobile Radio
-- Mechanism of Received Power with Log-normal Distribution -- Teruya Fujii, Hideki Omote (SBM) AP2014-221 |
The propagation variation in mobile radio can divide into three independent variations; instantaneous fading (Rayleigh f... [more] | AP2014-221 pp.55-60 |
| AP | 2015-03-20 13:45 |
Fukui | Fukui University, Bunkyou Campus | Accuracy Evaluation of Ray-Tracing Method with Rounded-Shape (RS) Model for Non Line-Of-Site (NLOS) Route in Street Cell Environment Nobutaka Omaki, Koshiro Kitao, Tetsuro Imai, Yukihiko Okumura (NTT DOCOMO) AP2014-222 |
In 5G mobile communication system, it is one of the most important issues to clarify the propagation characteristics in ... [more] | AP2014-222 pp.61-66 |
| AP | 2015-01-23 09:20 |
Ehime | Ehime University | Impact of Building Shape in the Intersection on Ray Tracing Accuracy for Non Line-Of-Site (NLOS) Scenario in Street Cell Environment Nobutaka Omaki, Koshiro Kitao, Tetsuro Imai, Yukihiko Okumura (NTT DOCOMO) AP2014-173 |
In 5G mobile communication system, it is one of the most important issues to clarify the propagation characteristics in ... [more] | AP2014-173 pp.67-72 |
| AP, RCS (Joint) |
2014-11-13 09:50 |
Yamagata | Yamagata University, Yonezawa Campus | A Study of Path Loss Correction Formula for a Cellular Base Station Looking down at Sloping Ground Area Hiroyuki Takahashi, Kohei Ohnishi (Okayama Univ.), Masahiro Nishi, Koichi Shin (Hiroshima City Univ.), Shinichi Ichitsubo (Kyushu Inst. of Tech.), Shigeru Tomisato, Masaharu Hata (Okayama Univ.) AP2014-141 |
Residential areas in Japan are often located on a sloping ground neighboring urban district. In such area, the base stat... [more] | AP2014-141 pp.73-78 |
| AP, RCS (Joint) |
2014-11-14 11:00 |
Yamagata | Yamagata University, Yonezawa Campus | [Invited Lecture]
Study on Propagation Characteristics for Design of Fifth-Generation Mobile Communication Systems
-- Frequency Dependency of Path Loss in 800 MHz to 37 GHz Band in Small-Cell Environment -- Tetsuro Imai, Koshiro Kitao, Ngochao Tran, Nobutaka Omaki, Yukihiko Okumura (NTT DOCOMO), Motoharu Sasaki, Wataru Yamada (NTT) AP2014-149 RCS2014-218 |
In 5G mobile communication system, it is one of the most important issues to clarify the propagation characteristics at ... [more] | AP2014-149 RCS2014-218 pp.115-120(AP), pp.119-124(RCS) |
| AP, SAT (Joint) |
2012-07-26 14:30 |
Hokkaido | Hokkaido Univ. | [Tutorial Lecture]
Summary of Mobile Radio Propagation in Urban Macro Environments Tetsuro Imai, Koshiro Kitao (NTT DOCOMO) AP2012-55 |
Recently, in order to improve the communication quality and achieve higher transmission rates in mobile communication sy... [more] | AP2012-55 pp.143-148 |
| AP | 2012-03-15 10:55 |
Shizuoka | Chuo public hall (Atami City) | Proposal on Shadow Fading Generation Model Based on Wavelet Transform Tetsuro Imai (NTT DOCOMO) AP2011-200 |
Recently, CA (carrier aggregation), CoMP (coordinated multi-point transmission/reception) and relaying technologies have... [more] | AP2011-200 pp.7-12 |
| AP | 2012-01-19 10:15 |
Fukuoka | Kyushu Inst. of Tech. | Proposal on Performance Evaluation Method of Propagation Loss Prediction Model Based on Wavelet Analysis Tetsuro Imai (NTT DOCOMO) AP2011-161 |
Up to now, many propagation loss prediction models have been proposed. In general, the performance of the model is evalu... [more] | AP2011-161 pp.85-90 |
| AP | 2012-01-19 11:10 |
Fukuoka | Kyushu Inst. of Tech. | [Tutorial Lecture]
Frequency Dependence of Microcell Mobile Propagation Shinichi Ichitsubo, Kousei Miyata, Taichi Kawashima (KIT) AP2011-163 |
Radio frequencies used by mobile communication systems are diversified and the frequency is changed every generation of ... [more] | AP2011-163 pp.97-101 |
| AP | 2011-12-15 12:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Formulation of Polarization Diversity Correlation Characteristics Based on Polarization Profile Tetsuro Imai (NTT DOCOMO) AP2011-119 |
(To be available after the conference date) [more] | AP2011-119 pp.1-5 |
| AP, SAT (Joint) |
2011-07-14 10:05 |
Nagano | Fac. Eng., Shinshu Univ. | Wavelet Multi-resolution Analysis of Reception Level Variations in Urban Mobile Communication Environment Tetsuro Imai, Koshiro Kitao (NTT DOCOMO) AP2011-34 |
In mobile communication environment, reception level variations are generally modeled using three kind of variations, su... [more] | AP2011-34 pp.41-46 |
| AP | 2011-01-20 16:35 |
Saga | Saga Univ. | Characteristics of Polarization Dispersion of Propagation Paths in Urban Mobile Communication environment Tetsuro Imai, Koshiro Kitao (NTT DOCOMO) AP2010-147 |
Recently, in order to operate higher transmission rates, it has been actively investigated to apply MIMO (Multiple input... [more] | AP2010-147 pp.85-90 |
| NS, RCS (Joint) |
2010-12-17 15:50 |
Okayama | Okayama Univ. | Mobile Propagation Experiment Using Microwave FPU System in Urban Area Fumiki Uzawa, Kazuhiko Mitsuyama, Tetsuomi Ikeda (NHK) RCS2010-197 |
We have been studying on microwave FPU (Field Pick-up Unit) for large capacity and high reliability. It is difficult to... [more] |
RCS2010-197 pp.227-232 |
| AP | 2010-02-18 15:00 |
Tokyo | Toshiba | Estimation accuracy using ray-tracing for spatio-temporal dynamic channel properties Koshiro Kitao, Kentaro Saito, Tetsuro Imai, Yoshiki Okano, Shunji Miura (NTT DOCOMO) AP2009-195 |
Dynamic control techniques such as rank adaptation are studied for LTE (Long Term Evolution) and IMT-Advanced which are ... [more] | AP2009-195 pp.65-70 |
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