Published paper

2024

Journal Papers

• Yukihiro Kida, Mitsuyasu Deguchi, and Takuya Shimura "A sparse adaptive decision feedback equalization approach for the high data rate vertical underwater acoustic communication in deep sea," Jpn. J. Appl. Phys, 2024, doi:10.35848/1347-4065/ad37c0(Accepted)
• Mitsuyasu Deguchi, Yukihiro Kida, Yoshitaka Watanabe and Takuya Shimura "Suppression of effects of the synchronization error with adaptive down-conversion for underwater acoustic communication," Jpn. J. Appl. Phys, 2024, doi:10.35848/1347-4065/ad38c9(Accepted)

2023

Journal Papers

• Experimental demonstration of spatial division multiplexing multiple-input/multiple-output underwater acoustic communication using a time-reversal method at the depth of the continental shelf: a consideration of optimization of signal length and number of transmission channels,
  Yukihiro Kida, Mitsuyasu Deguchi and Takuya Shimura,
  Japanese Journal of Applied Physics, Vol. 62 SJ1049 (2023).

Conference Proceedings

• High-Rate Underwater Acoustic MIMO Communication Using Adaptive Passive Time Reversal: Demonstrations in Shallow Water Channel,
  Yukihiro Kida, Takuya Shimura, Kenjiro Okadome and Mitsuyasu Deguchi, The 10th Forum Acousticum 2023.
• Frequency Offset Estimation for High Data Rate Acoustic MIMO-OFDM Systems,
  Zhengnan Li, Diego A. Cuji, Yukihiro Kida, Mitsuyasu Deguchi, Takuya Shimura and Milica Stojanovic,
  IEEE/MTS Oceans'23 Limerick.
• Experimental Demonstration of High Spectral Efficiency MIMO Underwater Acoustic Communication using Adaptive Passive Time Reversal on the Continental Shelf in Mid Latitude,
  Yukihiro Kida, Mitsuyasu Deguchi, Kenjiro Okadome, Yoshitaka Watanabe and Takuya Shimura,
  IEEE/MTS Oceans'23 Limerick.
• M. Deguchi, Y. Kida and T. Shimura, "Experimental demonstration of equalization with phase lock loops against Doppler shifts of multipath signals on underwater acoustic communications," 2023 IEEE Underwater Technology (UT), Tokyo, Japan, 2023, pp. 1-6, doi: 10.1109/UT49729.2023.10103373.
• Y. Kida, M. Deguchi, Y. Watanabe and T. Shimura, "Experiments for long-range high-rate underwater acoustic MIMO communication using adaptive passive time reversal," 2023 IEEE Underwater Technology (UT), Tokyo, Japan, 2023, pp. 1-6, doi: 10.1109/UT49729.2023.10103409.
• M. Deguchi, Y. Kida and T. Shimura, "Low-dimensional approximation of recursive least squares algorithm applied to decision feedback equalizer on underwater acoustic communication," OCEANS 2023 - MTS/IEEE U.S. Gulf Coast, Biloxi, MS, USA, 2023, pp. 1-9, doi: 10.23919/OCEANS52994.2023.10337095.
• Deguchi Mitsuyasu, Kida Yukihiro, Shimura Takuya ”Experimental demonstration of equalization against Doppler shifts of multipath signals on underwater acoustic communications ,” The 7th Underwater Acoustics Conference and Exhibition,2023,pp.529-535,

2022

Journal Papers

• Experimental demonstration on long-range time-reversal multiple-input/multiple-output underwater acoustic communication over tens of kbps in 12.5 km range,
  Yukihiro Kida, Mitsuyasu Deguchi and Takuya Shimura,
  Japanese Journal of Applied Physics, Vol. 61 SG1057 (2022).
• Suppression of effects of Doppler shifts of multipath signals inunderwater acoustic communication,
  Mitsuyasu Deguchi, Yukihiro Kida and Takuya Shimura,
  Acoustical Science and Technology, Vol. 43, No. 1, pp. 10-21 (2022).

Conference Proceedings

• MIMO-OFDM Over a 10km Acoustic Link: An Experimental Study at the Suruga Bay, Japan,
  Zhengnan Li, Diego A. Cuji, Yukihiro Kida, Mitsuyasu Deguchi, Takuya Shimura and Milica Stojanovic,
  IEEE/MTS Oceans'22 Hampton Roads.
• Frequency Offset Compensation for Vertical Underwater Acoustic Communication with a Deep Submersible,
  Diego A Cuji, Zhengnan Li, Yukihiro Kida, Mitsuyasu Deguchi, Takuya Shimura and Milica Stojanovic,
  The 16th ACM International Workshop on Underwater Networks (WUWNeT’22).
• Underwater Acoustic Communication between UUV and USV with Large Relative Velocity,
  Naruhiro IWAMA, Takaki YAMADA, Yukihiro KIDA, Mitsuyasu DEGUCHI and Takuya Shimura,
  The 43rd Symposium on UltraSonic Electronics (USE2022).
• An experiment of 400 kbps • km Class Underwater Acoustic MIMO Communication in Shallow Sea,
  Yukihiro Kida, Mitsuyasu Deguchi, and Takuya Shimura,
  The 43rd Symposium on UltraSonic Electronics (USE2022).

2021

Journal Papers

• High-rate underwater acoustic communication over 600 kbps × km for vertical uplink data transmission on a full-depth lander system,
  Takuya Shimura, Yukihiro Kida, Mitsuyasu Deguchi, Yoshitaka Watanabe and Yosaku Maeda,
  Underwater Communications and Networking (UComms’21).

2020

Journal Papers

• Investigation of a channel tracking based time reversal processing for underwater acoustic communication,
  Yukihiro KIDA, Mitsuyasu DEGUCHI and Takuya Shimura,
  Japanese Journal of Applied Physics, Vol. 59(SK), SKKF01 (2020).
• Application of adaptive digital down-conversion to underwater acoustic communication with nonuniform Doppler shift,
  Mitsuyasu DEGUCHI, Yukihiro KIDA, Yoshitaka WATANABE and Takuya Shimura,
  Japanese Journal of Applied Physics, Vol. 59(SK), SKKF02 (2020).

2019

Journal Papers

• High-rate multiple-input/multiple-output communication with adaptive time reversal demonstrated in tank experiments,
  Takuya Shimura, Mitsuyasu DEGUCHI, and Yukihiro KIDA,
  Japanese Journal of Applied Physics, Vol. 58 (SG), SGGF06 (2019).
• The relationship of time-reversal and multi-channel decision feedback equalization in underwater acoustic communication,
  Yukihiro KIDA, Takuya Shimura, and Mitsuyasu DEGUCHI,
  Japanese Journal of Applied Physics, Vol. 58 (SG), SGGF03 (2019).
• Dependence of demodulation performance on symbol rate for underwater acoustic communication with nonuniform Doppler shift,
  Mitsuyasu DEGUCHI, Yukihiro KIDA, Yoshitaka WATANABE and Takuya Shimura,
  Japanese Journal of Applied Physics, Vol. 58 (SG), SGGF02 (2019).

Conference Proceedings

• High-rate acoustic communication at the data rate of 69 kbps over the range of 3,600 m developed for vertical uplink communication,
  Takuya Shimura, Yukihiro KIDA and Mitsuyasu DEGUCHI,
  The proceeding of IEEE Oceans'19 Marseille.

2018

Journal Papers

• Multiuser communication using adaptive time reversal with moving transmitter,
  Takuya Shimura, Yukihiro KIDA, Mitsuyasu DEGUCHI and Yoshitaka WATANABE,
  Japanese Journal of Applied Physics, Vol. 57 (7S1), 07LC07 (2018).
• Experimental result for a high-rate underwater acoustic communication in deep sea for a manned submersible SHINKAI6500,
  Yukihiro KIDA, Mitsuyasu DEGUCHI, Takuya Shimura,
  海洋音響学会誌, Vol. 45, No. 4, pp. 197-203 (2018).
• Evaluation of effects of multipath and co-channel interference on time reversal multiple-input/multiple-output in underwater acoustic channel,
  Yukihiro KIDA, Mitsuyasu DEGUCHI and Takuya Shimura,
  Japanese Journal of Applied Physics,Vol. 57 (7S1), 07LG01 (2018).
• Analysis of effects of multipath signal with nonuniform Doppler shift on vertical underwater acoustic communication,
  Mitsuyasu DEGUCHI, Yukihiro KIDA, Yoshitaka WATANABE and Takuya Shimura,
  Japanese Journal of Applied Physics,Vol. 57 (7S1), 07LG03 (2018).

Conference Proceedings

• Demonstration of high rate MIMO communication with adaptive time reversal in tank experiment,
  Takuya Shimura, Yukihiro KIDA and Mitsuyasu DEGUCHI,
  The 38th Symposium on UltraSonic Electronics (USE2018).
• Effect of transmitter movement on multiuser communication with time reversal,
  Takuya Shimura, Yukihiro KIDA, Mitsuyasu DEGUCHI and Yoshitaka WATANABE,
  2018 Proceedings of Meeting of the Marine Acoustics Society of Japan, pp. 63-64.
• Basic research on MIMO underwater communication using adaptive time reversal,
  Takuya Shimura, Yukihiro KIDA and Mitsuyasu DEGUCHI,
  The proceeding of IEEE Oceans'18 Aberdeen.
• High-rate underwater acoustic communication system for SHINKAI6500,
  Takuya Shimura, Yukihiro KIDA and Mitsuyasu DEGUCHI,
  The proceedings of 2018 IEEE/OES Autonomous Underwater Vehicle Workshop (AUV).

2017

Journal Papers

• Experimental study on multiple-input/multiple-output communication with time reversal in deep ocean,
  Takuya Shimura, Yukihiro KIDA, Mitsuyasu DEGUCHI, Yoshitaka WATANABE and Hiroshi OCHI,
  Japanese Journal of Applied Physics, Vol. 56 (7S1), 07JG03 (2017).
• Performance analysis of passive time reversal communication technique for multipath interference in shallow sea acoustic channel,
  Yukihiro KIDA, Takuya Shimura, Mitsuyasu DEGUCHI, Yoshitaka WATANABE, Hiroshi OCHI and Koji MEGURO,
  Japanese Journal of Applied Physics,Vol. 56 (7S1), 07JG04 (2017).

Conference Proceedings

• Multiuser communication with moving targets using adaptive time reversal,
  Takuya Shimura,Yukihiro KIDA and Mitsuyasu DEGUCHI,
  The 38th Symposium on UltraSonic Electronics (USE2017).
• Vertical multiuser communication using adaptive time reversal,
  Takuya Shimura, Yukihiro KIDA and Mitsuyasu DEGUCHI,
  The Journal of the Acoustical Society of America, Vol. 141, No.5, pp. 3990 (2017).
• Time reversal for multiuser and MIMO communication,
  Takuya Shimura, Yukihiro KIDA, Mitsuyasu DEGUCHI and Yoshitaka WATANABE,
  2017 Proceedings of Meeting of the Marine Acoustics Society of Japan, pp. 35-36.
• Time reversal MIMO or multiuser communication in underwater acoustics,
  Takuya Shimura, Mitsuyasu DEGUCHI and Yukihiro KIDA,
  The proceedings of the 26th Ocean Engineering Symposium (2017).

2016

Conference Proceedings

• Multiuser and multiple-input-multiple-output underwater acoustic communication using time reversal,
  Takuya Shimura, Yukihiro KIDA, Mitsuyasu DEGUCHI, Kohji Meguro, Yoshitaka WATANABE and Hiroshi OCHI,
  The 5th Joint Meeting of the Acoustical Society of America and Acoustical Society of Japan, The Journal of the Acoustical Society of America, Vol. 140, No. 4, pp. 3230.
• MIMO underwater acoustic communication using adaptive time reversal in deep ocean,
  Takuya Shimura, Mitsuyasu DEGUCHI, Yukihiro KIDA and Hiroshi OCHI,
  The 37th Symposium on UltraSonic Electronics (USE2016).

2015

Journal Papers

• At-sea experiment of adaptive time-reversal multiuser communication in the deep ocean,
  Takuya Shimura,
  Yukihiro KIDA, Mitsuyasu DEGUCHI, Yoshitaka WATANABE and Hiroshi OCHI,
  Japanese Journal of Applied Physics, Vol. 54 (7S1), 07HG02 (2015).

Conference Proceedings

• Recent experiment results of long-range time reversal communication in deep water,
  Takuya Shimura, Yukihiro KIDA, Mitsuyasu DEGUCHI, Yoshitaka WATANABE, Hiroshi OCHI,
  International Hydroacoustic Workshop (IHW2015).

2014

Conference Proceedings

• Multiuser communication by adaptive time reversal in deep ocean,
  Takuya Shimura, Mitsuyasu DEGUCHI, Yukihiro KIDA, Takami MORI, Yoshitaka WATANABE, Hiroshi OCHI,
  The 2nd International Conference and Exhibition on Underwater Acoustics (UA2014), pp. 1191-1197 (2014).

2013

Journal Papers

• Experimental demonstration of multiuser communication in deep water using time reversal,
  Takuya Shimura, Hiroshi OCHI, and Heechun Song,
  Journal of Acoustical Society of America, 134 (4), pp. 3223-3229 (2013).

2012

Journal Papers

• Long-range time reversal communication in deep water: Experimental results,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and H. C. Song,
  Journal of Acoustical Society of America, Vol. 132(1), pp. EL49-EL53 (2012).
• Demonstration of time-reversal communication combined with spread spectrum at the range of 900 km in deep ocean,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  Acoustical Science and Technology, Vol. 33, No. 2, pp. 113-116 (2012).

Conference Proceedings

• Experiments of long-range time-reversal communication in the deep ocean,
  Takuya Shimura, Hiroshi OCHI, and Yoshitaka WATANABE,
  The 11th European Conference on Underwater Acoustics (ECUA2012), pp.726-730 (2012).
• Recent experiment results of long-range time-reversal communication in deep ocean,
  Takuya Shimura, Hiroshi OCHI, and Yoshitaka WATANABE,
  The spring meeting of the Acoustical Society of America, JASA Vol. 131 (4), pp.3277 (2012).

2011

Conference Proceedings

• Results of basic experiments for long-range communication in the deep ocean,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  The Proc. of UAM2011 (4th International Conference and Exhibition on Underwater Acoustic Measurements : Technologies and Results), pp. 1417-1422 (2011).
• Time-reversal communication in deep ocean - results of recent experiments -,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  International Symposium on Underwater Technology 2011 (2011).

2010

Journal Papers

• Experiment Results of Time-Reversal Communication at the Range of 300km,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  Japanese Journal of Applied Physics, Vol. 49 (7), 07GH11-1-7, (2010).

Conference Proceedings

• Feasibility study on long horizontal time-reversal communication with AUV in the deep ocean,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  The 10th European Conference on Underwater Acoustics (ECUA2010), Vol. 2, pp. 643-648 (2010).
• Feasibility study on time-reversal communication in the deep ocean with a long cruising AUV,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  The spring meeting of the Japan Society of naval architects and ocean engineering (2010).
• Experiment Results of Time-Reversal Communication in the Outer Ocean,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  Proceedings of Meeting of the Marine Acoustics Society of Japan, pp. 39-40 (2010).

2009

Journal Papers

• Basic Study on Flow-Induced Effect to Time-Reversal Communication,
  Takuya Shimura, Hiroshi OCHI, Yoshitaka WATANABE, and Takehito HATTORI,
  Japanese Journal of Applied Physics, Vol. 48, No.7, 07GL02 (2009).

Conference Proceedings

• Experiment of time-reversal communication at the range of 300 km,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  The Proc. of the 30th Symposium on Ultrasonic Electronics, pp. 369-370 (2009).
• Experiment results of time-reversal communication in the deep ocean at the range of 300 km,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  The Autumn meeting of the acoustical society of America, JASA Vol. 126 (4), pp. 2252-2252 (2009).
• Recent results of research on time-reversal communication in the deep ocean,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  IEICE Technical Report (US), Vol. 109 (180), pp. 1-5 (2009).
• Recent experiment results of time-reversal communication in the deep ocean,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  The 21st Ocean Engineering Symposium 2009 (2009).
• Experiment results of time-reversal communication in the deep ocean at the range of 300 km,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  The Proc. the 3rd International Conference and Exhibition on Underwater Acoustic Measurements : Technologies and Results, pp. 1309-1314 (2009).
• Basic research on time-reversal communication with a moving source-receiver,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI, and Takehito HATTORI,
  The spring meeting of the acoustical society of America, JASA Vol. 125 (4), pp. 2580-2580 (2009).

2008

Journal Papers

• Time-Reversal Communication in Deep Ocean: Result of Second At-Sea Experiment,
  Takuya Shimura, Hiroshi OCHI, and Yoshitaka WATANABE,
  Japanese Journal of Applied Physics, Vol. 47, No. 5B, pp.4360-4365 (2008).

Conference Proceedings

• Basic Study on Effect of Current Flow to Time-Reversal Communication,
  Takuya Shimura, Hiroshi OCHI, Yoshitaka WATANABE, and Takehito HATTORI,
  The Proceedings of the 29th Symposium on Ultrasonic Electronics, pp.117-118 (2008).
• Basic at-sea experiment for long horizontal time-reversal communication in deep ocean,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI and Takehito HATTORI,
  The 9th European Conference on Underwater Acoustics (ECUA) (Organized in the framework of the Acoustics'08 Paris Conference) pp. 699-704 (2008).
• Results of Basic At-Sea Experiments on Time-Reversal Communication in the Deep Ocean,
  Takuya Shimura, Yoshitaka WATANABE, Hiroshi OCHI and Takehito HATTORI,
  Oceans '08 MTS / IEEE Kobe-Techno-Ocean '08 (2008).

2007

Journal Papers

• First Experiment Result of Time-Reversal Communication in Deep Ocean,
  Takuya Shimura, Hiroshi OCHI, and Yoshitaka WATANABE,
  Japanese Journal of Applied Physics, Vol. 46, No. 7B, pp.4956-4960 (2007).

Conference Proceedings

• Time-Reversal Communication in Deep Ocean - The result of the second at-sea experiment -,
  Takuya Shimura, Yoshitaka WATANABE and Hiroshi OCHI,
  The Proceedings of the 28th Symposium on Ultrasonic Electronics, pp. 185-186 (2007).
• Research on long horizontal time-reversal communication in deep ocean,
  Takuya Shimura, Yoshitaka WATANABE and Hiroshi OCHI,
  The proceedings of UAM2007 (2nd International Conference ＆ Exhibition on "Underwater Acoustic Measurements: Technologies ＆ Results"), pp. 1365-1370 (2007).

2006

Journal Papers

• Basic study on time-reversal communication in shallow water with high frequency,
  Takuya Shimura, Hiroshi YOSHIDA and Lindsay Dhugal,
  Techno-Ocean 2006 /19th JASNAOE Ocean Engineering Symposium (2006).
• Time-Reversal Communication with Moving Source-Receiver in Shallow Water,
  Takuya Shimura, Hiroshi OCHI and Yoshitaka WATANABE,
  Japanese Journal of Applied Physics, Vol. 45, No. 5B, pp.4847-4852 (2006).

Conference Proceedings

• Research on Doppler Effect to Time-Reversal Communication,
  Takuya Shimura, Yoshitaka WATANABE and Hiroshi OCHI,
  The 8th European Conference on Underwater Acoustics (ECUA) pp.879-884 (2006)

2005

Journal Papers

• Basic study on active time reversal communication in shallow water,
  Takuya Shimura, Yoshitaka WATANABE and Hiroshi OCHI,
  Acoustical Science and Technology, Vol. 26, No.6, pp. 526-529 (2005).

Conference Proceedings

• A fundamental study on the application of passive time reversal to acoustic communication,
  Takuya Shimura, Hiroshi OCHI and Yoshitaka WATANABE,
  The Proceeding of Forum Acousticum 2005, Budapest, pp. 267-171 (2005).

2004

Journal Papers

• A study on the focusing property of time reversal waves,
  Takuya Shimura,
  Acoustical Science and Technology, Vol. 25, No. 5, pp. 364-372 (2004).
• Convergence Property of Time Reversal Waves under Noisy Environment,
  Takuya Shimura, Hiroshi OCHI and Yoshitaka WATANABE,
  Japanese Journal of Applied Physics, Vol. 43, No. 5B, pp. 3180-3185 (2004).

Conference Proceedings

• A Basic Research on the Long Horizontal Active Time Reversal Communication,
  Takuya Shimura, Hiroshi OCHI and Yoshitaka WATANABE,
  MTS/IEEE Oceans 2004, Kobe, pp. 2220-2224 (2004)
• Research on the Focusing Property of Time Reversal Waves with Various Array Configurations,
  Takuya Shimura, Yoshitaka WATANABE and Hiroshi OCHI,
  The 18th International Congress on Acoustics (ICA2004), Kyoto, pp. 371-374 (2004).
• Research on Acoustic Positioning and Estimation of Sound Velocity Profile Using Time Reversal Waves,
  Takuya Shimura, Yoshitaka WATANABE and Hiroshi OCHI,
  The 7th European Conference on Underwater Acoustics (ECUA), pp. 249-254 (2004).