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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 44  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SR 2024-05-20
12:30
Kagoshima Yokacenter (Kagoshima)
(Primary: On-site, Secondary: Online)
Study on Performance Improvement of MIMO Space Division Multiplexing Scheme for 5G Wireless Communication in High-speed Movement
Gennan Hayashi (Ryukyu Univ.), Suguru Kuniyoshi, Rie Saotome (Magna), Shiho Oshiro, Tomohisa Wada (Ryukyu Univ.)
 [more]
UWT
(2nd)
2023-11-27
14:20
Shiga Ritsumeikan University Biwako-Kusatsu Campus (BKC) [Invited Talk] A prototype ICI Canceling Underwater OFDM Communication system for Multi-path Doppler Channel
Tomohisa Wada, Shiho Oshiro, Catherine Akioya (Ryukyu Univ.), Hiromasa Yamada (OKI Com-Echoes)
This technical report concerns the improvement of Doppler tolerance in multipath environments for underwater acoustic ra... [more]
RCS, AP, UWT
(Joint)
2022-11-15
16:40
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
[Invited Lecture] An UWA OFDM Communication System with Improved Doppler compensation and Initial Synchronization
Tomohisa Wada, Shiho Oshiro, Yukiko Muller (Ryukyu Univ.), Hiromasa Yamada (OKI Com-Echoes)
 [more]
SR 2022-11-07
09:55
Fukuoka Fukuoka University
(Primary: On-site, Secondary: Online)
Performance comparisons of OFDM communication system with autoencoder
Takao Touma, Tomohisa Wada (Ryukyu Univ.) SR2022-46
This paper is a follow-up to "A study of OFDM communication system with autoencoder" presented at Technical Committee on... [more] SR2022-46
pp.7-14
CS 2022-07-14
13:55
Kagoshima Yakushima Environmental and Cultural Village Center
(Primary: On-site, Secondary: Online)
[Special Invited Talk] An Underwater Positioning System based on Wireless Acoustic OFDM Communication for multiple AUVs team operation
Tomohisa Wada (Ryukyu Univ.) CS2022-24
This paper proposes a new underwater positioning system which does not use INS in order to realize a compact and lower c... [more] CS2022-24
p.46
SR 2022-05-12
10:55
Tokyo NICT Koganei
(Primary: On-site, Secondary: Online)
A study of OFDM communication system with autoencoder
Takao Touma, Tomohisa Wada (Ryukyu Univ.) SR2022-6
Among deep neuralnetworks, autoencoders have the property of matching input and output. Recently, research has been cond... [more] SR2022-6
pp.27-33
SR 2021-01-25
14:20
Online Online [Panel Discussion] Digital Communication Venture Business in Okinawa
Tomohisa Wada (Ryukyu Univ.) SR2020-53
 [more] SR2020-53
pp.24-38
MIKA
(3rd)
2020-10-09
13:30
Niigata
(Primary: On-site, Secondary: Online)
[Invited Talk] Research and Development of 3 Acoustic OFDM Underwater Communication systems and their applications
Tomohisa Wada (Ryukyu Univ.)
This report shows three underwater OFDM acoustic communication systems. The first is deep sea to surface vertical commun... [more]
RCS 2020-06-26
10:00
Online Online Improvements on position-measurement accuracy of underwater acoustic positioning and communication system for Autonomous Unmanned Vehicles
Shoichiro Yamazato, Tomohisa Wada (Ryukyu Univ) RCS2020-42
 [more] RCS2020-42
pp.115-120
AP
(2nd)
2017-05-26
09:20
Okinawa Yonaguni Island, Kubura multipurpose meeting place (AMT) [Invited Lecture] Application of OFDM modulation to Underwater Acoustic Communication Systems
Tomohisa Wada (Ryukyu Univ.), Taisaku Suzuki (NIT, Okinawa), Yusuke Onna (Ryukyu Univ.)
 [more]
AP 2015-02-20
13:05
Hyogo Chusho-kigyou center at Amagasaki-City [Invited Lecture] Experimental Study on combining algorithm in Adaptive Antenna for ISDB-T Automobile Reception
Takanobu Tabata (Kojima Industries), Mitoshi Fujimoto (Fukui Univ.), Hirokazu Asato (MDN), Tomohisa Wada (University of the Ryukyus), Satoshi Hori (Kojima Industries) AP2014-204
In ISDB-T (Terrestrial digital TV broadcasting in Japan), Orthogonal Frequency Division Multiplexing (OFDM) is adopted a... [more] AP2014-204
pp.95-100
AP 2014-05-29
14:50
Okinawa Okinawa Industory Support Center [Special Talk] An acoustic underwater OFDM communication system for sallow sea multipath environment
Tomohisa Wada (Ryukyu Univ.), Taisaku Suzuki (Okinawa CT), Tran Minh Hai, Ysuto Matsuda (Ryukyu Univ.) AP2014-27
 [more] AP2014-27
pp.47-52
AP
(2nd)
2014-01-10
14:50
Overseas Le Quy Don Technical University (Hanoi, Vietnam) Study on successive wave separation Adaptive Array OFDM receiver for DTV mobile reception.
Yui Shimura, Tomohisa Wada (Ryukyu Univ.)
 [more]
SIP, CAS, CS 2013-03-15
14:20
Yamagata Keio Univ. Tsuruoka Campus (Yamagata) Performance evaluation of space diversity for Underwater Voice-band OFDM Communication
Taisaku Suzuki (Okinawa National College of Tech./Ryukyu Univ.), Yasuhiro Nakayama, Tomohisa Wada (Ryukyu Univ.) CAS2012-139 SIP2012-170 CS2012-145
 [more] CAS2012-139 SIP2012-170 CS2012-145
pp.247-252
SIP, CAS, CS 2013-03-15
14:45
Yamagata Keio Univ. Tsuruoka Campus (Yamagata) Investigation on Harmonic Interference Canceler (HIC) for AM radio receivers
Taishi Tamashiro, Tomohisa Wada (Univ. of Ryukyus) CAS2012-140 SIP2012-171 CS2012-146
 [more] CAS2012-140 SIP2012-171 CS2012-146
pp.253-258
RCS, SIP 2012-01-27
09:00
Fukuoka Fukuoka Univ. Evaluation of Optimal Parameters for Underwater Voice-Band OFDM Communication
Yasuhiro Nakayama (Ryukyu Univ.), Taisaku Suzuki (ONCT), Tomohisa Wada (Ryukyu Univ.) SIP2011-95 RCS2011-284
 [more] SIP2011-95 RCS2011-284
pp.99-102
RCS, SIP 2012-01-27
17:00
Fukuoka Fukuoka Univ. Study on Adaptive Array and Carrier Diversity Hybrid OFDM receiver for ISDB-T mobile reception
Yui Shimura, Tomohisa Wada (Ryukyu Univ.) SIP2011-117 RCS2011-306
This paper proposes an MMSE adapive array antenna and MRC carier dyversity hybrid receiver for mobile OFDM digital TV re... [more] SIP2011-117 RCS2011-306
pp.221-226
AP, RCS
(Joint)
2011-11-16
10:40
Aichi Nagoya Congress Center Layer decoding multi-rate LDPC codes for Chinese Digital Broadcasting
Muneto Shimabuku (Ryukyu Univ.), Zhian Zheng (MDN), Tomohisa Wada (Ryukyu Univ.) RCS2011-192
In China standard for FEC (Forward Error Correction) of terrestrial multimedia broadcasting, LDPC (Low Density Parity Ch... [more] RCS2011-192
pp.19-23
AP, RCS
(Joint)
2011-11-16
11:20
Aichi Nagoya Congress Center Detection Algorithm for LTE Random Access in Doppler Environment
Takeshi Kano, Tomohisa Wada (Ryukyu Univ.) RCS2011-194
 [more] RCS2011-194
pp.31-35
CS, SIP, CAS 2011-03-04
11:40
Okinawa Ohhamanobumoto memorial hall (Ishigaki)( Investigation on Japan ISDB-T 1SEG Software Defined Radio Signal Processing on PC Platform
Yuichiro Sunagawa, Tomohisa Wada (Univ. of the Ryukyus.) CAS2010-161 SIP2010-177 CS2010-131
Software Defined Radio (SDR) has received a strong attention in the development of digital communication system. Since S... [more] CAS2010-161 SIP2010-177 CS2010-131
pp.347-352
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