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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 12 of 12  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS 2021-10-21
13:00
Miyagi Tohoku University and Online
(Primary: On-site, Secondary: Online)
Initial access beam search method with variable beam width according to the area size
Takuto Arai, Tatsuhiko Iwakuni, Syuki Wai, Daisei Uchida, Naoki Kita (NTT)
 [more]
RCS 2021-10-21
13:25
Miyagi Tohoku University and Online
(Primary: On-site, Secondary: Online)
A New Beam Search Based on Combination History of Selected Beams among Antennas for Distributed Antenna System
Shuki Wai, Tatsuhiko Iwakuni, Takuto Arai, Daisei Uchida, Naoki Kita (NTT)
 [more]
AP, SANE, SAT
(Joint)
2021-07-30
14:30
Online Online [Invited Lecture] Visibility Analysis in a Human Body Shadowing Environment and Distributed Antenna Installations for Millimeter and Terahelz Wave Mobile Communications
Naoki Kita, Yushi Shirato, Daisei Uchida (NTT), Koji Yamamoto (Kyoto Univ.) AP2021-45
Development ofmmWave or higher frequency bands where rich frequency bandwidth resources are available is widely discusse... [more] AP2021-45
pp.120-125
NS, RCS
(Joint)
2020-12-18
13:25
Online Online [Invited Lecture] Distributed Antenna Systemes using High-Frequency-Band targeting 6G Wireless Networks
Daisei Uchida, Tatsuhiko Iwakuni, Naoki Kita, Takeshi Onizawa (NTT), Yoshihisa Kishiyama, Satoshi Suyama, Satoshi Nagata, Takahiro Asai (docomo) NS2020-101 RCS2020-148
High-Speed and broadband network transformation is needed for multi-points collecting sensing data and distributing movi... [more] NS2020-101 RCS2020-148
pp.73-78
RCS, AP, UWT
(Joint)
2020-11-26
15:15
Online Online Stochastic Geometry Analysis of Probability and Autocorrelation of Human Blockage in mmWave Communications
Koji Yamamoto (Kyoto Univ.), Chun-hsiang Huang, Yushi Shirato, Daisei Uchida, Naoki Kita (NTT) RCS2020-128
This report provides the probabilities of human-body blockage and blockage avoidance, and autocorrelation function for h... [more] RCS2020-128
pp.99-103
AP 2019-08-21
13:30
Hokkaido Hokkai-Gakuen Univ. A Study on Beamwidth Narrowing and Gain Enhancement of a Patch Array Antenna by Loading Dielectric Superstrate
Tatsuro Shigihara, Takashi Hikage, Manabu Yamamoto (Hokkaido Univ.), Daisei Uchida (NTT) AP2019-47
 [more] AP2019-47
pp.1-6
MoNA, AN, USN
(Joint)
2013-01-25
15:00
Miyagi ICHINOBO (Sendai-city) A Study of Accommodation Design for Sensor Divices in User-centric Wireless Networks
Daisei Uchida, Mamoru Kobayashi, Yushi Shirato, Hideki Toshinaga, Hiroyuki Shiba, Shuichi Yoshino (NTT) USN2012-75
In recent years, wireless networks are rapidly diffused in home networks with widespread use of smartphones and tablets.... [more] USN2012-75
pp.85-90
IN 2011-04-21
15:30
Kagawa Kagawa University [Invited Talk] Wide Area Ubiquitous Network -- Implementation for Ubiquitous Sensor Network --
Daisei Uchida (NTT) IN2011-7
One of key techniques to realize ubiquitous network is ubiquitous sensor network (USN) to support machine-to-machine (M2... [more] IN2011-7
pp.35-40
RCS 2009-08-03
11:45
Miyagi Tohoku Univ. A Study on Space Diversity for Direction of Arrival Estimation Method
Seiji Ohmori, Daisei Uchida, Takafumi Fujita, Yosuke Fujino (NTT) RCS2009-84
Many high-resolution direction-of-arrival(DoA) estimation methods using array antenna have been proposed and they have b... [more] RCS2009-84
pp.37-42
RCS 2006-04-21
09:20
Osaka Osaka Univ. Nakanoshima Center A Burst Synchronization Method of Uplink Preamble-less Demodulators for Wide-area Ubiquitous Network
Takafumi Fujita, Daisei Uchida, Yosuke Fujino, Osamu Kagami, Kazuji Watanabe (NTT) RCS2006-2
This paper proposes a new burst synchronization method of Uplink Preamble-less demodulators for the wide-area ubiquitous... [more] RCS2006-2
pp.7-12
RCS 2006-04-21
09:40
Osaka Osaka Univ. Nakanoshima Center A Precise Estimation of Unknown Weight Vector Subspace for for Multi-target Constant Modulus Algorithm
Yosuke Fujino, Daisei Uchida, Osamu Kagami, Kazuji Watanabe (NTT) RCS2006-3
Multi-target Constant Modulus Algorithm has been known as a method for blindly separating multiple co-channel signals by... [more] RCS2006-3
pp.13-18
RCS, CS 2005-01-28
09:00
Okinawa University of the Ryukyus Simplified Blind Channel Tracking Scheme for MIMO-OFDM systems
Yusuke Asai, Daisei Uchida, Wenjie Jiang, Takeshi Onizawa, Atsushi Ohta, Satoru Aikawa (NTT Corporation)
A MIMO-OFDM system is well-known as the most promising technique for PHY (physical) layer scheme for the next high-speed... [more] CS2004-183 RCS2004-290
pp.1-6
 Results 1 - 12 of 12  /   
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