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 |