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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OCS, OFT (Joint) |
2010-08-26 16:30 |
Hokkaido | Asahikawa Tokiwa Shimin Hall | A Study on Margin Design of Optical Wireless Train Communication System Based on Results of Rain and Glass Attenuation Experiments Min He, Shinichiro Haruyama, Masao Nakagawa, Tomoaki Ohtsuki, Hideki Urabe (Keio Univ.), Hiroshi Matsubara (RTRI)  OCS2010-41 |
Recently, high speed communication system between train and ground has been developed. However, the data rate still cann... [more] | OCS2010-41 pp.31-36 |
| IN, RCS (Joint) |
2010-04-27 13:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Theoretical Analysis of Transmit and Recieve Weight selection in Vector Coding with Channel Estimation Error and Feedback Delay Kyouhei Takano, Koichi Adachi, Tomoaki Ohtsuki, Masao Nakagawa (Keio Univ.) RCS2010-13 |
Vector Coding (VC) is a transmission scheme that can obtain path diversity gain while orthogonalizing receive signals. I... [more] | RCS2010-13 pp.73-78 |
| IN, RCS (Joint) |
2010-04-27 14:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | PAPR Reduction of TD-SCDMA Using Joint Transmission Technique Norharyati Binti Harum, Tomoaki Ohtsuki, Masao Nakagawa (Keio Univ.) RCS2010-14 |
Current downlink TD-SCDMA system uses Joint Detection (JD) technique to reduce interference. However, the technique need... [more] | RCS2010-14 pp.79-84 |
| IN, RCS (Joint) |
2010-04-27 14:55 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Subcarrier-Pairing Scheme for Low BER and PAPR In OFDM-Relay System Koki Yuda, Tomoaki Ohtsuki, Masao Nakagawa (Keio Univ.) RCS2010-15 |
[more] | RCS2010-15 pp.85-89 |
| IN, RCS (Joint) |
2010-04-27 15:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | A Study on the User Allocation in IFDMA Yuichi Kazama, Koichi Adachi, Tomoaki Ohtsuki, Masao Nakagawa (Keio Univ.) RCS2010-16 |
Single-carrier frequency division multiple access (SC-FDMA) will be adopted in the uplink of the future wireless communi... [more] | RCS2010-16 pp.91-96 |
| IN, RCS (Joint) |
2010-04-27 15:45 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Performance Improvement of DDCE for IFDMA with Phase Rotation Kazunori Yamamoto, Koichi Adachi, Tomoaki Ohtsuki, Masao Nakagawa (Keio Univ.) RCS2010-17 |
Single-carrier frequency-division multiple-access (SC-FDMA), which can multiplex multiple users orthogonally by allocati... [more] | RCS2010-17 pp.97-102 |
| PN | 2010-03-09 15:30 |
Okinawa | Ohama Nobumoto Memorial Hall | Visible-Light Positioning System with High Speed/Low Speed Image Sensor Masahiro Arai, Toshiya Tanaka, Shuji Suzuki, Shinichiro Haruyama, Masao Nakagawa (Keio Univ.) PN2009-102 |
This paper proposes a new positioning method using visible light communication technology. The white LEDs and two types ... [more] | PN2009-102 pp.91-96 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-03 09:20 |
Kanagawa | YRP | Application of Iterative Signal Processing to MC-CDMA with Frequency Domain Phase Rotation Koichi Adachi (Keio Univ.), Fumiyuki Adachi (Tohoku Univ.), Masao Nakagawa (Keio Univ.) RCS2009-258 |
[more] | RCS2009-258 pp.5-10 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-04 10:50 |
Kanagawa | YRP | Analysis for Transmit Power Control Based on Modulation Identification Koji Mochizuki, Osamu Takyu, Yohtaro Umeda (Tokyo Univ. of science.), Takeo Fujii (Univ. of Electro-Comm.), Masao Nakagawa (Keio Univ.) SR2009-104 |
In this paper, we consider the transmit power control (TPC) based on modulation identification. In the considered TPC, t... [more] | SR2009-104 pp.91-97 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-04 14:00 |
Kanagawa | YRP | A Study on Available Bnad of Asynchronous OFDM under Cognitive Radio Tomoyuki Shirakawa (Keio Univ.), Osamu Takyu (Tokyo Univ. of Science.), Takeo Fujii (Univ. of Electro-Comm.), Tomoaki Ohtsuki, Masao Nakagawa (Keio Univ.) SR2009-111 |
[more] | SR2009-111 pp.137-142 |
| SIP, CAS, CS | 2010-03-01 11:30 |
Okinawa | Hotel Breeze Bay Marina, Miyakojima | Design and Analysis of Speed-Enhancing Circuit for Visible Light Communication Yusuke Shimogaki, Yohtaro Umeda, Osamu Takyu (Tokyo Univ. of Science), Masao Nakagawa (Keio Univ.) CAS2009-94 SIP2009-139 CS2009-89 |
Recently, Visible Light Communication that communicates by modulating light of illumination attracts much attention. It ... [more] | CAS2009-94 SIP2009-139 CS2009-89 pp.93-98 |
| CS, OCS (Joint) |
2010-01-28 17:25 |
Yamaguchi | Kaikyo Messe Shimonoseki | A Study on High-Speed Tracking in Optical Wireless Train Communication System Shoichi Ishikawa, Masato Hiruta, Masao Nakagawa, Hideki Urabe, Shinichiro Haruyama (Keio Univ.), Hiroshi Matsubara (RTRI) OCS2009-109 |
A rising demand of the broadband communication in train needs more faster data communication method than wireless LAN. W... [more] | OCS2009-109 pp.55-60 |
| SR | 2010-01-22 10:15 |
Tokyo | Univ. of Electro-Communications | False Alarm and Miss Detection in Spectrum Sensing with Nonlinear Front end Takeru Matsuki, Yohtaro Umeda, Osamu Takyu (Tokyo Univ. of Science), Takeo Fujii (Univ. of Electro-Comm.), Tomoaki Ohtsuki, Masao Nakagawa (Keio Univ.) SR2009-83 |
Cognitive radio is considered as the highly promising solution to the shortage problem of the frequency resource． A spec... [more] | SR2009-83 pp.59-64 |
| RCS, SIP | 2010-01-22 15:30 |
Fukuoka | Kyushu Univ. | Iterative Interference Cancellation for Multi-code PR/MC-CDMA Koichi Adachi, Masao Nakagawa (Keio Univ.) SIP2009-114 RCS2009-248 |
The transmission performance, e.g., bit error rate (BER) performance, of uplink transmission is severely degraded owing ... [more] | SIP2009-114 RCS2009-248 pp.241-246 |
| RCS, SAT (Joint) |
2009-12-18 14:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Performance Evaluation of Effect of Spectrum Flatness by Random Phase Rotation in IFDMA System Takeo Yamasaki, Osamu Takyu (Tokyo Univ. of Science), Wei Li, Koichi Adachi (Keio Univ), Yohtaro Umeda (Tokyo Univ. of Science), Masao Nakagawa (Keio Univ) RCS2009-194 |
In this paper, a scheme for making the flat frequency spectrum of interleaved frequency division multiple access (IFDMA)... [more] | RCS2009-194 pp.161-165 |
| OFT, OCS, IEE-CMN, ITE-BCT (Joint) [detail] |
2009-11-26 16:00 |
Fukushima | A Study on Optical Wireless Train Communication System using Biaxial Control Mirror Actuator Masato Hiruta, Shinichiro Haruyama, Masao Nakagawa (Keio Univ.), Norio Shibata (Freelance), Hiroshi Matsubara (RTRI), Hideki Urabe, Syoichi Ishikawa (Keio Univ.) OCS2009-88 |
In recent years, for the realization of the ubiquitous society, the information infrastructure development has been inc... [more] |
OCS2009-88 pp.33-38 |
|
| OFT, OCS, IEE-CMN, ITE-BCT (Joint) [detail] |
2009-11-26 16:25 |
Fukushima | Control Technique of Optical Axis for Directional Optical Wireless Communication Terminal Xin Lin (Nakagawa Lab., Inc.), Syoichi Ishikawa (Keio Univ.), Kazutoshi Hirohashi (Nakagawa Lab., Inc.), Shinichiro Haruyama, Masao Nakagawa (Keio Univ.) OCS2009-89 |
A compact infrared communication device with bidirectional directed transmission function is developed as a mobile termi... [more] | OCS2009-89 pp.39-43 |
|
| SR, AN, USN (Joint) |
2009-10-23 11:00 |
Miyagi | Tohoku Univ. | Performance of Cooperative HARQ with Relay Selection that Exploits Inter-relay Opportunistic Listening Nandar Lynn (Keio Univ.), Osamu Takyu (Tokyo Univ. of Science), Koichi Adachi, Masao Nakagawa (Keio Univ.) SR2009-63 AN2009-33 USN2009-36 |
In this paper, we present a practically feasible cooperative HARQ with relay selection that exploits inter-relay transmi... [more] | SR2009-63 AN2009-33 USN2009-36 pp.79-85(SR), pp.71-77(AN), pp.53-59(USN) |
| RCS | 2009-08-04 10:30 |
Miyagi | Tohoku Univ. | Performance Analysis of CDTD-VC in a Distributed Antenna System Kyouhei Takano, Yoshiyuki Takanashi, Daisuke Takeda, Koichi Adachi, Masao Nakagawa (Keio Univ.) RCS2009-96 |
Vector Coding(VC) is a transmission scheme which can obtain path diversity gain while multiplexing the transmitted signa... [more] | RCS2009-96 pp.109-114 |
| RCS | 2009-08-04 10:55 |
Miyagi | Tohoku Univ. | A Study on Frequency Diversity and Multi-User Diversity in IFDMA Yuichi Kazama, Akira Yamasaki, Koichi Adachi, Masao Nakagawa (Keio Univ.) RCS2009-97 |
Single-carrier frequency division multiple access (SC-FDMA) has been decided to be adopted in the uplink of the future w... [more] | RCS2009-97 pp.115-120 |
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