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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 17 of 17  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
IN, NS, CS, NV
(Joint)
2021-09-09
14:55
Online Online Proposal of signal separation using LSTM on wavelength division multiplexed optical wireless communication
Masaki Inomata, Takanori Iwamatsu, Saeko Oshiba (KIT) CS2021-43
We propose a new method for sequential interference cancellation in wavelength-division multiplexed optical wireless com... [more] CS2021-43
pp.13-16
CS, CQ
(Joint)
2021-05-14
09:50
Online On-line Proposal of Channel Matrix Estimation by Using Neural Networks on Wavelength Division Multiplexing Optical Wireless Communication
Masaki Inomata, Saki Shibata, Takanori Iwamatsu, Saeko Oshiba (KIT) CS2021-8
This paper describes a wavelength division multiplexing (WDM) - optical wireless communication (OWC) system
using orth... [more]
CS2021-8
pp.25-30
CS 2020-11-06
10:50
Online Online + Central Community Center, Nonoichi Community Center
(Primary: Online, Secondary: On-site)
A study for personnel proximity prevention measures using BLE -- measures against COVID-19 --
Takanori Iwamatsu (KIT), Kazuhiro Suzuki (LIFE LABORATORY), Saeko Oshiba (KIT) CS2020-58
As countermeasures against the COVID-19, it was shown that the distance accuracy of personnel proximity can be secured b... [more] CS2020-58
pp.60-63
RCS 2019-06-21
09:30
Okinawa Miyakojima Hirara Port Terminal Building A study on high efficiency phase shift keying on 3-dimensional Euclidean space
Sho Kakuwa, Masahiro Fujii (Utsunomiya Univ.), Takanori Iwamatsu (FTN) RCS2019-82
It is necessary to assign many symbols on In-phase and Quadrature-phase(IQ)-diagram for high speed transmission,but it c... [more] RCS2019-82
pp.261-266
CS, OCS
(Joint)
2018-01-29
13:25
Ehime Ehime University WDM-OFDM visible light communication using MIMO technology
Jun Yabuuchi, Nariisa Omura, Saeko Oshiba (KIT), Takanori Iwamatsu (Fujitsu Telecom Networks) CS2017-79
We demonstrate wavelength division multiplexing (WDM) multicolor light emitting diode (LED) visible light communication ... [more] CS2017-79
pp.5-8
MICT, WBS 2016-07-20
12:30
Tokyo Tokyo Institute of Technology [Poster Presentation] A study on blind channel estimation by EM algorithm for OFDM systems with multi-QAM
Hirokazu Abe, Masahiro Fujii (Utsunomiya Univ.), Takanori Iwamatsu (Fujitsu Telecom Networks), Hiroyuki Hatano, Atsushi Ito, Yu Watanabe (Utsunomiya Univ.) WBS2016-17 MICT2016-18
We have investigated a blind channel estimation method based on the EM algorithm so far.
Since the conventional method ... [more]
WBS2016-17 MICT2016-18
pp.33-38
MICT, WBS 2016-07-20
12:30
Tokyo Tokyo Institute of Technology [Poster Presentation] A study on frequency offset estimation by iterative Moose algorithm for OFDM systems
Masaya Ito, Masahiro Fujii (Utsunomiya Univ.), Takanori Iwamatsu (Fujitsu Telecom Networks), Hiroyuki Hatano, Atsushi Ito, Yu Watanabe (Utsunomiya Univ.) WBS2016-18 MICT2016-19
A frequency offset caused by a difference between the carrier frequencies at the transmitter and the receiver results in... [more] WBS2016-18 MICT2016-19
pp.39-44
RCC, ITS, WBS 2015-12-17
13:30
Okinawa Okinawa Industry Support Center [Poster Presentation] A Study on Blind Channel Estimation by EM Algorithm for OFDM Systems
Hirokazu Abe, Masahiro Fujii (Utsunomiya Univ.), Takanori Iwamatsu (Fujitsu Telecom Networks), Hiroyuki Hatano, Atsushi Ito, Yu Watanabe (Utsunomiya Univ.) WBS2015-53 ITS2015-25 RCC2015-55
It is necessary to estimate the channel state information coherently to equalize the received signal in wireless communi... [more] WBS2015-53 ITS2015-25 RCC2015-55
pp.79-84
CS 2015-11-13
10:50
Hokkaido Hotel Taisetsu (Sounkyo Spa, Hokkaido) A consideration on performance evaluation of linear/rectangular array LOS-MIMO systems
Toshihisa Yamada, Daisuke Umehara, Kouichiro Wakasugi (KIT), Takanori Iwamatsu (FUJITSU WIRELESS SYSTEMS) CS2015-55
LOS-MIMO (Line Of Sight - Multiple-Input Multiple-Output) systems can increase a channel capacity without increasing the... [more] CS2015-55
pp.59-64
OCS, CS
(Joint)
2015-01-23
11:10
Tokushima Tokushima University Performance of the Alamouti Coded OFDM in the Presence of Polarization Diversity
Tomohito Seki, Daisuke Umehara, Koichiro Wakasugi (Kyoto Inst. of Tech.), Takanori Iwamatsu (FWL) CS2014-87
Dual-polarized transmission systems have a feature in frequency-efficiency, however, a diversity gain can be obtained by... [more] CS2014-87
pp.37-40
EMCJ, ITE-BCT 2013-03-08
14:05
Tokyo Kikai-Shinko-Kaikan Bldg. An Application of Matching Pursuit based Channel Estimation to OFDM System
Hideki Furudate, Masataka Umeda, Takanori Iwamatsu (Fujitsu Lab.), Ziji Ma, Tomonori Sato, Minoru Okada (NAIST)
 [more]
CS, OCS
(Joint)
2012-01-27
09:00
Mie ISESHI-KANKOUBUNKAKAIKAN Frequency Offset Compensation in OFDM Systems based on a Time-Domain Inter-Carrier Interference Canceller
Satoshi Yamamoto, Koichiro Wakasugi (Kyoto Inst. of Tech), Takanori Iwamatsu, Masataka Umeda (Fujitsu Lab.) CS2011-89
Frequency offsets in OFDM systems lead to an inter-carrier interference (ICI). In this report, we propose a time-domain ... [more] CS2011-89
pp.43-47
CS, SIP, CAS 2011-03-03
09:00
Okinawa Ohhamanobumoto memorial hall (Ishigaki)( A Consideration of Impulsive Interference Suppression Using Multi-antennas
Hideki Furudate, Takanori Iwamatsu (Fujitsu Lab.), Koichiro Wakasugi (Kyoto Inst. of Tech.) CAS2010-102 SIP2010-118 CS2010-72
When impulsive interference mixes with the received signal, it is necessary to detect the interference period before the... [more] CAS2010-102 SIP2010-118 CS2010-72
pp.1-6
SIP, CAS, CS 2010-03-02
10:30
Okinawa Hotel Breeze Bay Marina, Miyakojima Considerations on Adaptive Array Antenna with Equalization Suppressing Multipath beyond the Gard Interval in the OFDM System
Masataka Umeda, Takanori Iwamatsu (Fujitsu Labs.), Koichiro Wakasugi (Kyouto Inst. of Tech.) CAS2009-112 SIP2009-157 CS2009-107
Adaptive Array Antenna (AAA) can shape its beam to suppress interference signals, so it can receive only the desired sig... [more] CAS2009-112 SIP2009-157 CS2009-107
pp.197-202
CS, OCS
(Joint)
2010-01-29
09:55
Yamaguchi Kaikyo Messe Shimonoseki A Consideration on THP-OFDM System with No Modulo Arithmetic Device
Takeshi Sawada (KIT), Takanori Iwamatsu (Fujitsu Lab.), Koichiro Wakasugi (KIT) CS2009-71
Many types of ISI cancelers have been studied, however, because of heavy processing burden, they are mostly inappropriat... [more] CS2009-71
pp.25-30
CS, OCS
(Joint)
2010-01-29
10:20
Yamaguchi Kaikyo Messe Shimonoseki Performance Evaluation of OFDM with Interference Canceller
Ryosuke Uematsu (Kyoto Inst. of Tech.), Takanori Iwamatsu (Fujitsu Lab.), Koichiro Wakasugi (Kyoto Inst. of Tech.) CS2009-72
For microwave systems in the analogue generation, an interference canceller based on amplitude and phase differences bet... [more] CS2009-72
pp.31-36
CS 2009-01-22
09:10
Okinawa Iriomote Island, Okinawa Dicision Feedback Estimation for OFDM
Takaharu Kobayashi, Takanori Iwamatsu (Fujitsu Labs.), Koichiro Wakasugi (Kyoto Inst. of Tech.) CS2008-57
OFDM(Orthogonal Frequency Division Multiplexing) systems need many pilot subcarriers for an accurate channel estimation ... [more] CS2008-57
pp.1-6
 Results 1 - 17 of 17  /   
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