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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS | 2009-08-04 13:50 |
Miyagi | Tohoku Univ. | On Evaluation Index of Power Efficiency for Transmitter Architecture with Amplitude-Modulated Final Stage Amplifier
-- Power Added Efficiency, Drain/Anode Efficiency, or Anything Suitable? -- Makoto Taromaru, Satoshi Tsukamoto, Keizo Inagaki, Kazuto Yano, Masazumi Ueba (ATR)  RCS2009-102 |
A new power efficiency index for RF (radio frequency) power amplifiers is proposed. These amplifiers studied are saturat... [more] | RCS2009-102 pp.143-146 |
| AP | 2009-06-11 15:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Modeling and Verification of Secret Key Agreement System Using Variable Directional Antenna Masahiko Maeda (ATR/Univ. of Hyogo), Takayuki Umaba (ATR), Yosuke Harada (ATR/Doshisha Univ.), Masazumi Ueba (ATR), Satoru Aikawa (ATR/Univ. of Hyogo), Hisato Iwai, Hideichi Sasaoka (Doshisha Univ.) AP2009-43 |
This paper describes modeling and verification of the mutual information shared by the wireless secret key agreement sys... [more] | AP2009-43 pp.37-42 |
| SR | 2009-05-28 12:55 |
Niigata | Niigata Univ | Proposal of Band-Limited Spectrum-Division Single Carrier Transmission for Dynamic Spectrum Access in ISM Band Makoto Taromaru, Kazuto Yano, Masazumi Ueba (ATR) SR2009-2 |
A single carrier transmission system is proposed. It is a dynamic spectrum access system designed for ISM bands where va... [more] | SR2009-2 pp.7-12 |
| WBS, IT, ISEC | 2009-03-09 17:35 |
Hokkaido | Hakodate Mirai Univ. | Practical Methodology of Secret Key Agreement System Using Variable Directional Antenna Takayuki Umaba (ATR), Masahiko Maeda (ATR/Univ. of Hyogo,), Yosuke Harada (ATR/Doshisha Univ.), Masazumi Ueba (ATR), Satoru Aikawa (ATR/Univ. of Hyogo,), Hisato Iwai, Hideichi Sasaoka (Doshisha Univ.) IT2008-56 ISEC2008-114 WBS2008-69 |
This paper describes a practical methodology of secret agreement system with privacy amplification. We defined parameter... [more] | IT2008-56 ISEC2008-114 WBS2008-69 pp.79-84 |
| RCS, AN, MoNA, SR (Joint) |
2009-03-04 13:20 |
Kanagawa | YRP | A Study of Quantization Dynamic-Range Improvement for Wideband Receivers Yasuo Suzuki, Satoshi Tsukamoto, Makoto Taromaru, Masazumi Ueba (ATR) SR2008-89 |
The improvement method of quantization dynamic-range for wideband digital radio receivers is proposed and its performanc... [more] | SR2008-89 pp.7-10 |
| RCS, AN, MoNA, SR (Joint) |
2009-03-04 16:30 |
Kanagawa | YRP | Conceptual Proposal of Dynamic Spectrum Access Sysytem for Efficient Spectrum Sharing in ISM Band Makoto Taromaru, Kazuto Yano, Satoshi Tsukamoto, Masazumi Ueba (ATR) SR2008-97 |
A system concept of a radio access communication system is proposed. The radio system is designed for an ISM band where ... [more] | SR2008-97 pp.53-57 |
| RCS, AN, MoNA, SR (Joint) |
2009-03-04 16:50 |
Kanagawa | YRP | Study on Physical Channel Structure of Dynamic Spectrum Access System for Efficient Spectrum Sharing in ISM Band Kazuto Yano, Kilsoo Jeong, Yasuo Suzuki, Satoshi Tsukamoto, Makoto Taromaru, Masazumi Ueba (ATR) SR2008-98 |
This paper introduces a design concept of the dynamic spectrum access (DSA) system for efficient spectrum sharing in IS... [more] | SR2008-98 pp.59-64 |
| MW, ED | 2009-01-14 13:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg | A development of multi-port switch for 60GHz multi-sector switched-beam antenna Shoichi Kitazawa, Amane Miura, Masataka Ohira, Susumu Ano, Masazumi Ueba (ATR) |
(To be available after the conference date) [more] | |
| AP | 2008-12-11 16:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Experimental evaluation of wideband planar multi-sector switched-beam antenna in 60GHz band Amane Miura, Masataka Ohira, Shoichi Kitazawa, Susumu Ano, Shigeru Saito, Masazumi Ueba (ATR) AP2008-149 |
e develpoed a multi-sector switched-beam antenna in 60 GHz band as the antenna for millimeter-wave multi-gigabit wireles... [more] | AP2008-149 pp.57-62 |
| AP, RCS (Joint) |
2008-11-21 09:20 |
Ishikawa | Kanazawa Institute of Technology | Wideband Waveguide Slot Array Consisting of Closely-Spaced Elements for 60GHz Sector Antenna Masataka Ohira, Amane Miura, Masazumi Ueba (Advanced Telecommunications Research Institute International) AP2008-127 |
This paper proposes a new wideband waveguide slot array for a planar sector antenna of multi-gigabit wireless LAN in 60G... [more] | AP2008-127 pp.91-96 |
| MW | 2008-08-28 15:10 |
Osaka | Osaka-Univ. (Toyonaka) | A Study of Dual Frequency Oscillator for the 60GHz FSK Modulation Shoichi Kitazawa, Makoto Taromaru, Masazumi Ueba (ATR) MW2008-87 |
[more] | MW2008-87 pp.47-50 |
| RCS, AN, MoNA, SR, WBS (Joint) |
2008-03-06 15:50 |
Kanagawa | YRP | [Special Talk]
Studies on Efficient Spectrum Use in Space Domain
-- SDM application for small mobile terminals and Multi-user MIMO technologies -- Makoto Taromaru, Masazumi Ueba (ATR), Atsushi Ohta, Kazuyasu Okada, Shuji Kubota (NTT) SR2007-95 |
This paper presents the results of "Research and Development of Efficient Spectrum Use in Space Domain" which is one of ... [more] | SR2007-95 pp.67-74 |
| RCS, SAT (Joint) |
2007-12-21 10:00 |
Oita | On Index of Spectrum Use Efficiency with Space Domain Multiplexing in Account
-- Concept Proposal of "Information Flux" and "Information Flux Density" -- Makoto Taromaru, Kazuto Yano, Satoshi Tsukamoto, Shoichi Kitazawa, Amane Miura, Masazumi Ueba (ATR) RCS2007-126 |
This report studies an index of radio spectrum use efficiency with degree of space multiplexing in account. We introduc... [more] | RCS2007-126 pp.85-90 |
|
| AP | 2007-09-06 13:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Circularly Polarized Parasitic Array Radiator Antenna Using Microstrip Antennas with Dual-orthogonal Feeds Amane Miura, Wuqiong Luo, Makoto Taromaru, Masazumi Ueba (ATR) AP2007-80 |
Most of conventional parasitic array radiator antennas with reactive loads including ESPAR (Electronically Steerable Par... [more] | AP2007-80 pp.37-42 |
| AP | 2007-09-06 13:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Beam/Null Forming by Optimization of Excitation Coefficients and Reactance Values for Inverted-F Multiport Parasitic Array Radiator Antenna Masataka Ohira, Amane Miura, Makoto Taromaru, Masazumi Ueba (ATR) AP2007-81 |
[more] | AP2007-81 pp.43-48 |
| AP | 2007-01-25 13:50 |
Fukui | Fukui Univ. | Configuration of Inverted-F Antenna Array with Mutual Coupling and Its Equivalent Weight Masataka Ohira, Amane Miura, Masazumi Ueba, Makoto Taromaru, Takashi Ohira (ATR) AP2006-116 |
This paper proposes a new configuration of the inverted-F antenna (IFA) array for user terminals in ``system-to-system S... [more] | AP2006-116 pp.37-42 |
| SAT | 2006-10-19 15:15 |
Overseas | KAL Hotel (Jeju-Do, Korea) | Satellite experiments on Variable Polarization/Frequency Division Multiplexing (VPFDM) Fumihiro Yamashita, Kiyoshi Kobayashi, Masazumi Ueba (NTT), Takaaki Zakouji (JSAT) |
[more] | |
| SAT | 2006-10-20 14:50 |
Overseas | KAL Hotel (Jeju-Do, Korea) | Satellite link availability analysis using 3-dimensional map data Yutaka Imaizumi, Kohei Ohata, Masazumi Ueba (ＮＴＴ) |
We propose a method of simulating satellite link availability that uses three dimensional map data. Our method calculate... [more] | |
| AP, SAT (Joint) |
2006-05-18 15:45 |
Kagoshima | Kagoshima Univ. | Experimental verification of distorted antenna patterns compensation method for next generation mobile communication satellite antennas Yoshinori Suzuki, Satoshi Harada (NTT), Akira Meguro (JAXA), Masazumi Ueba (NTT) SAT2006-6 |
To yield a large communication capacity in future mobile satellite communication systems, a multi-beam system must be em... [more] | SAT2006-6 pp.29-32 |
| SAT | 2006-01-20 13:30 |
Hiroshima | Hiroshima International University | Communication Capacity and Quality Enhancement using a Two-layered Adaptive Resource Allocation Scheme for Multi-beam Mobile Satellite Communication Systems Katsuya Nakahira, Kiyoshi Kobayashi, Masazumi Ueba (NTT) |
[more] | SAT2005-43 pp.1-6 |
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