Masaaki Nagahara

J-GLOBAL         Last updated: Oct 4, 2018 at 14:25
 
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Name
Masaaki Nagahara
URL
https://nagahara-masaaki.github.io/
Affiliation
The University of Kitakyushu
Section
Institute of Environmental Science and Technology
Job title
Professor
Degree
Ph.D(Kyoto University)
Other affiliation
Indian Institute of Technology Bombay
ORCID ID
0000-0002-8992-2495

Profile

Masaaki Nagahara’s research interests are in the broad area of applied mathematics, in particular for automatic control, signal processing, sparse modeling, and artificial intelligence.

He is author or co-author of many publications in journals and refereed conference proceedings, including A* or A ranked journals (e.g. IEEE Transactions on Automatic Control and IEEE Transactions on Signal Processing) and conferences (e.g. IEEE CDC) using the ERA 2010 ranking. He holds three international patents on signal processing, and electric power systems. His research efforts have been supported by 9 research grants from government agencies and private financial groups.

Dr. Nagahara has an extensive research network with colleagues in Japan, Australia, India, the United States, and Europe, not only from universities but also from companies such as SANYO Semiconductor and Panasonic Corporation.

Dr. Nagahara received an international award, Transition to Practice Award, from IEEE Control Systems Society in 2012 for the introduction and development of sound-processing technology with SANYO Semiconductor. He also received three research awards in 1999, 2012, 2014, and three service awards in 2014 and 2015. He is Senior Member of the IEEE.

Research Areas

 
 

Academic & Professional Experience

 
Jan 2017
 - 
Today
Visiting Professor, Systems and Control (SYSCON), Indian Institute of Technology Bombay
 
Apr 2016
 - 
Today
Professor, Institute of Environmental Science and Technology, The University of Kitakyushu
 
Apr 2004
 - 
Mar 2015
Assistant Professor/Senior Lecturer, Graduate School of Informatics, Kyoto University
 

Education

 
 
 - 
Mar 2003
Ph.D, Graduate School of Informatics, Kyoto University
 

Awards & Honors

 
2014
Best Tutorial Paper Award, IEICE
 
2012
Best Paper Award, SICE
 
2012
Transition to Practice Award, IEEE Control Systems Society
 

Published Papers

 
Niharika Challapalli,Masaaki Nagahara,Mathukumalli Vidyasagar
CoRR   abs/1611.02071    2016   [Refereed]
Shuichi Ohno,Teruyuki Shiraki,M. Rizwan Tariq,Masaaki Nagahara
CoRR   abs/1609.01383    2016   [Refereed]
Debasish Chatterjee,Masaaki Nagahara,Daniel E. Quevedo,K. S. Mallikarjuna Rao
CoRR   abs/1602.08834    2016   [Refereed]
Hampei Sasahara,Kazunori Hayashi,Array
2016 IEEE International Conference on Communications, ICC 2016, Kuala Lumpur, Malaysia, May 22-27, 2016   1-6   2016   [Refereed]
Ryo Hayakawa,Kazunori Hayashi,Hampei Sasahara,Array
24th European Signal Processing Conference, EUSIPCO 2016, Budapest, Hungary, August 29 - September 2, 2016   1383-1387   2016   [Refereed]
Yutaka Yamamoto,Kaoru Yamamoto,Array
55th IEEE Conference on Decision and Control, CDC 2016, Las Vegas, NV, USA, December 12-14, 2016   4003-4008   2016   [Refereed]
Takuya Ikeda,Array,Kenji Kashima
55th IEEE Conference on Decision and Control, CDC 2016, Las Vegas, NV, USA, December 12-14, 2016   962-966   2016   [Refereed]
M. Rizwan Tariq,Shuichi Ohno,Array
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2016, Jeju, South Korea, December 13-16, 2016   1-5   2016   [Refereed]
Takuya Ikeda,Array
2016 American Control Conference, ACC 2016, Boston, MA, USA, July 6-8, 2016   209-214   2016   [Refereed]
Hampei Sasahara,Kazunori Hayashi,Array
IEEE Signal Process. Lett.   23(12) 1853-1857   2016   [Refereed]
Array,Array,Daniel E. Quevedo,Array
Systems & Control Letters   94 31-36   2016   [Refereed]
M. Nagahara, D. E. Quevedo, and D. Nesic
IEEE Transactions on Automatic Control   61(3) 747-747   2016   [Refereed]
Array,Jan Østergaard,Daniel E. Quevedo
EURASIP J. Adv. Sig. Proc.   2016 76   2016   [Refereed]
NAGAHARA Masaaki, YAMAMOTO Yutaka
Automatica   65 203-209   2016   [Refereed]
Shuichi Ohno,Yuma Ishihara,Masaaki Nagahara
IEEE Trans. on Circuits and Systems   65-I(4) 1395-1405   2018   [Refereed]
IKEDA Takuya, NAGAHARA Masaaki
Automatica   64 190-195   2016   [Refereed]
Niharika Challapalli,Masaaki Nagahara,Mathukumalli Vidyasagar
CoRR   abs/1710.07952    2017   [Refereed]
Shuichi Ohno,Yuma Ishihara,Masaaki Nagahara
CoRR   abs/1704.03998    2017   [Refereed]
Keisuke Nakashima,Takahiro Matsuda 0001,Masaaki Nagahara,Tetsuya Takine
28th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2017, Montreal, QC, Canada, October 8-13, 2017   1-7   2017   [Refereed]
Shuichi Ohno,Teruyuki Shiraki,M. Rizwan Tariq,Masaaki Nagahara
2017 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2017, New Orleans, LA, USA, March 5-9, 2017   4581-4585   2017   [Refereed]
Kaoru Yamamoto,Masaaki Nagahara,Yutaka Yamamoto
56th IEEE Annual Conference on Decision and Control, CDC 2017, Melbourne, Australia, December 12-15, 2017   6253-6258   2017   [Refereed]
Shuichi Ohno,M. Rizwan Tariq,Masaaki Nagahara
2017 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017, Kuala Lumpur, Malaysia, December 12-15, 2017   938-942   2017   [Refereed]
Hampei Sasahara,Kazunori Hayashi,Masaaki Nagahara
IEEE Trans. Signal Processing   65(21) 5621-5634   2017   [Refereed]
Takuya Ikeda,Array,Shunsuke Ono
IEEE Trans. Automat. Contr.   62(6) 2750-2763   2017   [Refereed]
Takuya Ikeda,Masaaki Nagahara
CoRR   abs/1511.05757    2015   [Refereed]
Hampei Sasahara,Kazunori Hayashi,Masaaki Nagahara
CoRR   abs/1510.07273    2015   [Refereed]
Takuya Ikeda,Masaaki Nagahara,Shunsuke Ono
CoRR   abs/1509.07968    2015   [Refereed]
Hampei Sasahara,Kazunori Hayashi,Masaaki Nagahara
CoRR   abs/1508.06021    2015   [Refereed]
Hampei Sasahara,Masaaki Nagahara,Kazunori Hayashi,Yutaka Yamamoto
CoRR   abs/1503.07692    2015   [Refereed]
Masaaki Nagahara
CoRR   abs/1503.05299    2015   [Refereed]
H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto,
SICE Journal of Control, Measurement, and System Integration   8(5) 321-327   2015   [Refereed]
NAGAHARA Masaaki
IEEE Signal Processing Letters   22(10) 1575-1579   Oct 2015   [Refereed]
Hampei Sasahara,Array,Kazunori Hayashi,Yutaka Yamamoto
54th IEEE Conference on Decision and Control, CDC 2015, Osaka, Japan, December 15-18, 2015   7244-7249   2015   [Refereed]
Hampei Sasahara,Masaaki Nagahara,Kazunori Hayashi,Yutaka Yamamoto
10th Asian Control Conference, ASCC 2015, Kota Kinabalu, Malaysia, May 31 - June 3, 2015   1-4   2015   [Refereed]
Takuya Ikeda,Masaaki Nagahara
10th Asian Control Conference, ASCC 2015, Kota Kinabalu, Malaysia, May 31 - June 3, 2015   1-4   2015   [Refereed]
0000-0002-8992-2495,Masaaki Nagahara
IEEE Signal Process. Lett.   22(10) 1575-1579   2015   [Refereed]
M. Nagahara and C. F. Martin
IEEE Signal Processing Letters   21(11) 1394-1397   Nov 2014   [Refereed]
M. Nagahara, D. E. Quevedo, and J. Ostergaard
IEEE Transactions on Automatic Control   59(7) 1899-1905   Jul 2014   [Refereed]
Takuya Ikeda,Masaaki Nagahara
CoRR   abs/1412.7840    2014   [Refereed]
Hampei Sasahara,Masaaki Nagahara,Kazunori Hayashi,Yutaka Yamamoto
CoRR   abs/1412.7645    2014   [Refereed]
Takuya Ikeda,Masaaki Nagahara
CoRR   abs/1412.5707    2014   [Refereed]
Hampei Sasahara,Masaaki Nagahara,Kazunori Hayashi,Yutaka Yamamoto
CoRR   abs/1412.3238    2014   [Refereed]
Masaaki Nagahara
CoRR   abs/1410.5165    2014   [Refereed]
Masaaki Nagahara,Daniel E. Quevedo,Dragan Nesic
CoRR   abs/1408.3025    2014   [Refereed]
Masaaki Nagahara,Hampei Sasahara,Kazunori Hayashi,Yutaka Yamamoto
CoRR   abs/1407.7083    2014   [Refereed]
Masaaki Nagahara,Yutaka Yamamoto
CoRR   abs/1407.2415    2014   [Refereed]
Masaaki Nagahara,Daniel E. Quevedo,Dragan Nesic
CoRR   abs/1407.2377    2014   [Refereed]
Masaaki Nagahara,Clyde F. Martin
CoRR   abs/1407.1697    2014   [Refereed]
Array,Daniel E. Quevedo,Array
IEEE Trans. Automat. Contr.   59(7) 1899-1905   2014   [Refereed]
Array,Clyde F. Martin
IEEE Signal Process. Lett.   21(11) 1394-1397   2014   [Refereed]
M. Nagahara; Y. Yamamoto
IEEE Transactions on Signal Processing   61(18) 4473-4480   Sep 2013   [Refereed]
Nagahara, Masaaki/Martin, Clyde F.
Asian Journal of Control   15(2) 461-468   Mar 2013   [Refereed]
K. Hayashi; M. Nagahara; T. Tanaka
IEICE Transactions on Communications   E86B(3) 685-712   Mar 2013   [Refereed]
Masaaki Nagahara
CoRR   abs/1308.4268    2013   [Refereed]
Masaaki Nagahara
CoRR   abs/1308.3302    2013   [Refereed]
Masaaki Nagahara,Ken-ichi Hamaguchi,Yutaka Yamamoto
CoRR   abs/1308.3300    2013   [Refereed]
Masaaki Nagahara,Masaki Ogura,Yutaka Yamamoto
CoRR   abs/1308.2743    2013   [Refereed]
Masaaki Nagahara,Yutaka Yamamoto
CoRR   abs/1308.2737    2013   [Refereed]
Masaaki Nagahara,Daniel E. Quevedo,Jan Østergaard,Takahiro Matsuda 0001,Kazunori Hayashi
CoRR   abs/1308.2592    2013   [Refereed]
Masaaki Nagahara,Daniel E. Quevedo,Takahiro Matsuda 0001,Kazunori Hayashi
CoRR   abs/1308.2291    2013   [Refereed]
Yutaka Yamamoto,Masaaki Nagahara,Pramod P. Khargonekar
CoRR   abs/1308.2063    2013   [Refereed]
Masaaki Nagahara
CoRR   abs/1308.2013    2013   [Refereed]
Masaaki Nagahara,Daniel E. Quevedo
CoRR   abs/1308.1590    2013   [Refereed]
Masaaki Nagahara,Clyde F. Martin
CoRR   abs/1308.1509    2013   [Refereed]
Masaaki Nagahara,Takahiro Matsuda 0001,Kazunori Hayashi
CoRR   abs/1308.0799    2013   [Refereed]
Masaaki Nagahara,Yutaka Yamamoto
CoRR   abs/1308.0797    2013   [Refereed]
Masaaki Nagahara,Yutaka Yamamoto
CoRR   abs/1308.0650    2013   [Refereed]
Masaaki Nagahara,Daniel E. Quevedo,Jan Østergaard
CoRR   abs/1308.0518    2013   [Refereed]
Masaaki Nagahara,Yutaka Yamamoto
CoRR   abs/1308.0385    2013   [Refereed]
Masaaki Nagahara,Clyde F. Martin
CoRR   abs/1308.0384    2013   [Refereed]
Masaaki Nagahara,Daniel E. Quevedo,Jan Østergaard
CoRR   abs/1308.0002    2013   [Refereed]
Masaaki Nagahara,Daniel E. Quevedo,Jan Østergaard
CoRR   abs/1307.8242    2013   [Refereed]
Masaaki Nagahara,Daniel E. Quevedo,Dragan Nesic
CoRR   abs/1307.8232    2013   [Refereed]
Array,Daniel E. Quevedo,Array
Proceedings of the 52nd IEEE Conference on Decision and Control, CDC 2013, December 10-13, 2013, Firenze, Italy   3825-3830   2013   [Refereed]
Array,Yutaka Yamamoto
Proceedings of the IEEE International Conference on Control Applications, CCA 2013, Hyderabad, India, August 28-30, 2013   527-532   2013   [Refereed]
Array,Yutaka Yamamoto
IEEE Trans. Signal Processing   61(18) 4473-4480   2013   [Refereed]
Kazunori Hayashi,Masaaki Nagahara,Toshiyuki Tanaka
IEICE Transactions   96-B(3) 685-712   2013   [Refereed]
M. Nagahara; Y. Yamamoto
IEEE Transactions on Signal Processing   60(6) 2828-2839   Jun 2012   [Refereed]
M. Nagahara; T. Matsuda; K. Hayashi
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E95A(4) 713-722   Apr 2012   [Refereed]
Y. Yamamoto; M. Nagahara; P.P. Khargonekar
IEEE Transactions on Signal Processing   60(2) 613-625   Feb 2012   [Refereed]
Array,Yutaka Yamamoto
10th IFAC Workshop on Time Delay Systems, TDS 2012, Boston, MA, USA, June 22-24, 2012.   61-66   2012   [Refereed]
Array,Yutaka Yamamoto,Seiya Miyazaki,Takahiro Kudoh,Naoki Hayashi
Proceedings of the 51th IEEE Conference on Decision and Control, CDC 2012, December 10-13, 2012, Maui, HI, USA   4241-4246   2012   [Refereed]
Array,Yutaka Yamamoto
IEEE Trans. Signal Processing   60(6) 2828-2839   2012   [Refereed]
Yutaka Yamamoto,Array,Array
IEEE Trans. Signal Processing   60(2) 613-625   2012   [Refereed]
Masaaki Nagahara,Takahiro Matsuda 0001,Kazunori Hayashi
IEICE Transactions   95-A(4) 713-722   2012   [Refereed]
Y. Yamamoto; M. Nagahara; P.P. Khargonekar
IEEE Transactions on Signal Processing   60(5) 2706-2708   2012   [Refereed]
A BRIEF OVERVIEW OF SIGNAL RECONSTRUCTION VIA SAMPLED-DATA H-infinity OPTIMIZATION
Yamamoto, Yutaka; Nagahara, Masaaki; Khargonekar, Pramod P.
APPLIED AND COMPUTATIONAL MATHEMATICS   11(1) 3-18   2012   [Refereed]
M. Nagahara
Applications of Digital Signal Processing   193-210   Nov 2011   [Refereed]
T. Matsuda; M. Nagahara; K. Hayashi
IEEE Communications Letters   15(10) 1117-1119   Oct 2011   [Refereed]
NAGAHARA Masaaki;OGURA Masaki;YAMAMOTO Yutaka
SICE J Control Meas Syst Integr (JCMSI)   4(5) 341-348   Sep 2011   [Refereed]
M. Nagahara; Y. Yamamoto
Signal Processing   91(2) 176-184   Feb 2011   [Refereed]
Array,Yutaka Yamamoto
Signal Processing   91(2) 176-184   2011   [Refereed]
Takahiro Matsuda 0001,Array,Kazunori Hayashi
IEEE Communications Letters   15(10) 1117-1119   2011   [Refereed]
J. Willems; Y. Ohta; S. Hara; H. Fujioka; M. Nagahara
IEEE Control Systems Magazine   30(4) 112-113   2010   [Refereed]
M. Nagahara
Lecture Notes in Control and Information Sciences   398 331-340   2010   [Refereed]
Array,Yutaka Yamamoto
Proceedings of the 48th IEEE Conference on Decision and Control, CDC 2009, combined withe the 28th Chinese Control Conference, December 16-18, 2009, Shanghai, China   8136-8141   2009   [Refereed]
Array,Yutaka Yamamoto
Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2007, Honolulu, Hawaii, USA, April 15-20, 2007   1469-1472   2007   [Refereed]
Control theory and signal processing
Y. Yamamoto; M. Nagahara
Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers   61(12) 1710-1715   2007   [Refereed]
Masaaki Nagahara,Toshihiro Wada,Yutaka Yamamoto
2006 IEEE International Conference on Acoustics Speech and Signal Processing, ICASSP 2006, Toulouse, France, May 14-19, 2006   612-615   2006   [Refereed]
K. Kashima; Y. Yamamoto; M. Nagahara
IEEE Signal Processing Letters   11(2) 79-82   Feb 2004   [Refereed]

Misc

 
Nagahara Masaaki
Proceedings of the IEICE General Conference   2016(1)    Mar 2016
Hayakawa Ryo, Hayashi Kazunori, Sasahara Hampei, Nagahara Masaaki
Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference   2015    Aug 2015
Nagahara Masaaki
Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference   2015 "SS-19"   Aug 2015
H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto,
10th Asian Control Conference (ASCC)      May 2015   [Refereed]
T. Ikeda and M. Nagahara
10th Asian Control Conference (ASCC)      May 2015   [Refereed]
Communication Performance Analysis of Sampled-Data H-infinity Optimal Coupling Wave Canceler
NAGAHARA Masaaki
H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto      Mar 2015   [Refereed]
Value Functions in Sparse Optimal and L1 Optimal Controls
T. Ikeda and M. Nagahara
SICE International Symposium on Control Systems      Mar 2015   [Refereed]
NAGAHARA Masaaki, HAYASHI Kazunori
IEICE technical report. RCC, Reliable communication and control   114(388) 37-40   Jan 2015
In this presentation, we propose the extended L^1-optimal control, which is defined by a weighted sum of L^1 norms, that generates discrete-valued control signals. Discrete-valued control signals are available in networked control systems to solve...
Sparsity Methods for Networked Control
NAGAHARA Masaaki
IEICE SmartCom2014      Oct 2014   [Invited]
NAGAHARA Masaaki
IEICE technical report. SR, Smart radio   114(284) 191-192   Oct 2014
In this presentation, we introduce sparsity methods for networked control systems and show the effectiveness of sparse control. In networked control, efficient data transmission is important since transmission delay and error can critically deteri...
From digital control to signal processing
NAGAHARA Masaaki
Indonesia-Japan Joint Seminar on Informatics Researchers and Trends      Sep 2014   [Invited]
Sasahara Hampei, Nagahara Masaaki, Hayashi Kazunori, Yamamoto Yutaka
Proceedings of the Society Conference of IEICE   2014    Sep 2014
M. Nagahara, H. Sasahara, K. Hayashi, and Y. Yamamoto
SICE Annual Conference 2014,      Sep 2014   [Refereed]
FIR digital filter design by sampled-data H-infinity discretization
M. Nagahara and Y. Yamamoto
The 19th IFAC World Congress      Aug 2014   [Refereed]
IKEDA Takuya, NAGAHARA Masaaki
IEICE technical report. RCC, Reliable communication and control   114(162) 19-22   Jul 2014
In this article, we consider sparse optimal control with L^2 regularization for the states. Under the normality assumption, we prove that the solutions of the sparse optimal control problem coincide those of an L^1 optimal control problem. By this...
SASAHARA Hampei, NAGAHARA Masaaki, HAYASHI Kazunori, YAMAMOTO Yutaka
IEICE technical report. RCC, Reliable communication and control   114(60) 79-81   May 2014
In this article, we consider the problem of coupling waves in a single-frequency full-duplex relay station. Conventional design methods give a digital filter or an adaptive array antenna that cancels the effect of coupling waves on the sampling in...
SASAHARA Hampei, NAGAHARA Masaaki, HAYASHI Kazunori, YAMAMOTO Yutaka
IEICE technical report. MICT, Healthcare and medical information communication technology   114(61) 79-81   May 2014
In this article, we consider the problem of coupling waves in a single-frequency full-duplex relay station. Conventional design methods give a digital filter or an adaptive array antenna that cancels the effect of coupling waves on the sampling in...
笹原 帆平, 永原 正章, 林 和則, 山本 裕
システム制御情報学会研究発表講演会講演論文集   58    May 2014
「SCI'14」2014.05.21(水)-23(金) 於:京都テルサIn this article, we propose H∞ optimal design of digital filters that cancel the continuous-time effect of coupling waves in a single frequency full-duplex relay station from the transmitter to the receiving ante...
大島 貫保之, 永原 正章, 山本 裕
システム制御情報学会論文誌      May 2014
「SCI'14」2014.05.21(水)-23(金) 於:京都テルサIn this paper, we consider digital control of two-wheel self-balancing robots. Conventionally, a continuous-time controller is first designed and then discretized to implement it on a digital controller. In this ...
笹原 帆平, 永原 正章, 林 和則, 山本 裕
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報      May 2014
「高信頼制御通信研究会(RCC)」2014.05.29-30 於:機械振興会館本発表では,単一周波数を用いた全二重中継局における回り込み波の問題を考察する.従来,回り込み波をキャンセルするためにディジタルフィルタやアダプティブアレーアンテナが用いられているが,その定式化においてサンプル点間の応答を考慮しておらず,サンプル点間の振動がポジティブフィードバックによって増幅され,性能が悪化する可能性がある.この問題に対処するため,本研究では,サンプル値H∞ 最適化法を導入し,サンプル点間を含めた...
M. Nagahara, D. E. Quevedo, and D. Nesic
52nd IEEE Conference on Decision and Control (CDC), pp. 3825-3830      Dec 2013   [Refereed]
L1-optimal splines for outlier rejection
M. Nagahara and C. F. Martin
The 59th World Statistics Congress      Aug 2013   [Refereed]
Optimal discretization of analog filters via sampled-data H-infinity control theory
M. Nagahara and Y. Yamamoto
The 2013 IEEE Multi-Conference on Systems and Control (MSC 2013)      Aug 2013   [Refereed]
永原 正章
電子情報通信学会技術研究報告      May 2013
[2013年度第1回高信頼制御通信研究会] 主催:電子情報通信学会 高信頼制御通信時限研究専門委員会, 併催:計測自動制御学会関西支部 物理と情報をつなぐ次世代システム制御研究会, 開催日:2013年11月21日(木)午後~22日(金) 21日, 開催場所:大阪市立大学 文化交流センターホール, テーマ:通信方式・アクセス方式・制御理論・ネットワーク制御・セキュリティ・遠隔制御・制御応用・システム紹介・その他制御通信に関するすべてのトピックスL^1 ノルムで定義された評価関数を最小化する最...
AZUMA Shun-ichi, NAGAHARA Masaaki
SYSTEMS, CONTROL AND INFORMATION   57(5) 207-210   2013
HAYASHI Naoki, NAGAHARA Masaaki
SYSTEMS, CONTROL AND INFORMATION   57(7) 283-292   2013
M. Nagahara, Y. Yamamoto, S. Miyazaki, T. Kudoh, and N. Hayashi
51th IEEE Conference on Decision and Control (CDC)      Dec 2012   [Refereed]
Sparsity-promoting methods in remote control systems
M. Nagahara
The 9th IEEE VTS Asia Pacific Wireless Communications Symposium(APWCS2012)      Aug 2012   [Refereed]
A Brief Introduction to Compressed Sensing
K. Hayashi and M. Nagahara
The 9th IEEE VTS Asia Pacific Wireless Communications Symposium(APWCS2012)      Aug 2012   [Refereed]
Sparsely-packetized predictive control by orthogonal matching pursuit
M. Nagahara, D. Quevedo, and J. Ostergaard
Mathematical Theory of Networks and Systems (MTNS2012)      Jul 2012   [Refereed]
宮崎 誠也, 工藤 貴弘, 永原 正章
パナソニック技報   57(4) 249-254   Jan 2012
NAGAHARA Masaaki
SYSTEMS, CONTROL AND INFORMATION   56(6) 298-301   2012
YAMAMOTO Yutaka, NAGAHARA Masaaki
SYSTEMS, CONTROL AND INFORMATION   56(7) 367-374   2012
M. Nagahara; Y. Yamamoto
IFAC Proceedings Volumes (IFAC-PapersOnline)   10(PART 1) 61-66   2012   [Refereed]
M. Nagahara; D.E. Quevedo; T. Matsuda; K. Hayashi
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings   2733-2736   2012   [Refereed]
M. Nagahara; D.E. Quevedo; J. Ostergaard
Proceedings of the IEEE Conference on Decision and Control   1362-1367   2012   [Refereed]
M. Nagahara; Y. Yamamoto; S. Miyazaki; T. Kudoh; N. Hayashi
Proceedings of the IEEE Conference on Decision and Control   4241-4246   2012   [Refereed]
M. Nagahara and Y. Yamamoto
2012 IFAC Workshop on Time Delay Systems      2012   [Refereed]
M. Nagahara, D. E. Quevedo, J. Ostergaard, T. Matsuda, and K. Hayashi
The 9th IEEE International Conference on Control & Automation, Dec., 2011.      Dec 2011   [Refereed]
Nagahara Masaaki
Proceedings of the Society Conference of IEICE   2011 "SS-18"-"SS-19"   Aug 2011
Nagahara Masaaki
Proceedings of the Society Conference of IEICE   2011 "SS-48"-"SS-51"   Aug 2011
M. Nagahara, K. Hanibuchi, and Y. Yamamoto
IFAC 18th World Congress      Aug 2011   [Refereed]
MATSUDA Takahiro, NAGAHARA Masaaki, HAYASHI Kazunori
IEICE technical report   110(449) 211-216   Feb 2011
Network tomography is an inference technique for internal network characteristics such as link loss rates and link delays from end-to-end measurements. In this article, we propose a network tomography technique with compressed sensing, which is an...
NAGAHARA Masaaki
SYSTEMS, CONTROL AND INFORMATION   55(4)    2011
M. Nagahara; D.E. Quevedo
IFAC Proceedings Volumes (IFAC-PapersOnline)   18(PART 1) 84-89   2011   [Refereed]
M. Nagahara; D.E. Quevedo; J. Ostergaard; T. Matsuda; K. Hayashi
IEEE International Conference on Control and Automation, ICCA   1055-1059   2011   [Refereed]
M. Nagahara; K. Hanibuchi; Y. Yamamoto
IFAC Proceedings Volumes (IFAC-PapersOnline)   18(PART 1) 4386-4391   2011   [Refereed]
OGURA Masaki, NAGAHARA Masaaki
SYSTEMS, CONTROL AND INFORMATION   54(1)    2010
Quadratic programming for monotone control theoretic splines
M. Nagahara; C.F. Martin; Y. Yamamoto
Proceedings of the SICE Annual Conference   531-534   2010   [Refereed]
Nagahara Masaaki
Proceedings of the Society Conference of IEICE   2009 "SS-14"   Sep 2009
M. Nagahara; Y. Yamamoto
Proceedings of the IEEE Conference on Decision and Control   8136-8141   2009   [Refereed]
A novel approach to repetitive control via sampled-data H filters
M. Nagahara; M. Ogura; Y. Yamamoto
Proceedings of 2009 7th Asian Control Conference, ASCC 2009   160-165   2009   [Refereed]
Y. Wakasa; D. Yasufuku; M. Nagahara; Y. Yamamoto
Proceedings of the IEEE Conference on Decision and Control   38(5) 462-468   May 2002   [Refereed]
H2/H approach to the histogram method for density estimation
M. Nagahara; K.I. Sato; Y. Yamamoto
ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009, Proceedings   1230-1233   2009   [Refereed]
NAGAHARA Masaaki;YAMAMOTO Yutaka
Proc IEEE Int Conf Acoust Speech Signal Process   2009 Vol.6 3381-3384   2009   [Refereed]
H.INF. Optimal Nonparametric Density Estimation from Quantized Samples
NAGAHARA M.;SATO K. I.;YAMAMOTO Y.
Proc ISCIE Int Symp Stoch Syst Theory Appl (Inst Syst Control Inf Eng)   40th 67-72   2009   [Refereed]
M. Nagahara; Y. Yamamoto
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings   3381-3384   2009   [Refereed]
Optimal Design of Delta-Sigma Modulators via Generalized KYP Lemma
M. Nagahara and Y. Yamamoto
ICROS-SICE International Joint Conference 2009 (ICASS-SICE2009), pp. 4376-4379      2009   [Refereed]
M. Nagahara; M. Ogura; Y. Yamamoto
Proceedings of the SICE Annual Conference   1151-1154   2008   [Refereed]
M. Nagahara; Y. Yamamoto
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings   353-356   2008   [Refereed]
M. Nagahara; Y. Yamamoto; P.P. Khargonekar
IFAC Proceedings Volumes (IFAC-PapersOnline)   17(1 PART 1)    2008   [Refereed]
Stability of signal reconstruction filters via cardinal exponential splines
M. Nagahara and Y. Yamamoto, and Pramod P. Khargonekar
IFAC World Congress, pp. 1414-1419      2008   [Refereed]
NAGAHARA Masaaki
SYSTEMS, CONTROL AND INFORMATION   51(4) 189-190   2007
M. Nagahara; Y. Yamamoto
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings   3 III1469-III1472   2007   [Refereed]
M. Ogura; M. Nagahara; Y. Yamamoto
Proceedings of the SICE Annual Conference   1422-1426   2007   [Refereed]
M. Ogura, M. Nagahara and Y. Yamamoto
SICE Annual Conference, pp. 1422-1426      2007   [Refereed]
Causal Spline Interpolation by H-infinity Optimization
Masaaki Nagahara,Yutaka Yamamoto
Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing      2007   [Refereed]
Nagahara Masaaki, Yamamoto Yutaka
Proceedings of the IEICE General Conference   2006    Mar 2006
M. Nagahara; T. Wada; Y. Yamamoto
2006 SICE-ICASE International Joint Conference   4160-4163   2006   [Refereed]
Design of oversampling delta-sigma DA converters via H-infinity optimization
Masaaki Nagahara,Toshihiro Wada,Yutaka Yamamoto
Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing,III,612-615      2006   [Refereed]
Masaaki Nagahara,Toshihiro Wada,Yutaka Yamamoto
Proc. SICE-ICCAS 2006,4160-4163      2006   [Refereed]
M. Nagahara; Y. Yamamoto
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings   IV IV221-IV224   2005   [Refereed]
Noise reduction of JPEG images by sampled-data H-infinity optimal epsilon filters
Hironori Kakemizu,Masaaki Nagahara,Akira Kobayashi,Yutaka Yamamoto
Proc. SICE Annual Conference,1080-1085      2005   [Refereed]
Masaaki Nagahara,Yutaka Yamamoto
Proc. IEEE International Conference on Acoustics Speech, and Signal Processing,IV,221-224      2005   [Refereed]
NAGAHARA Masaaki
SYSTEMS, CONTROL AND INFORMATION   48(5)    2004
Sampled-data audio signal compression with Huffman coding
Shinjiro Ashida,Hironori Kakemizu,Masaaki Nagahara,Yutaka Yamamoto
Proc. SICE Annual Conference,Sapporo,972-976      2004   [Refereed]
On the computation of value sets of multi-linear functions
Y. Ohta; M. Nagahara
Proceedings of the IEEE International Symposium on Computer-Aided Control System Design   161-166   2004   [Refereed]
YAMAMOTO Yutaka, NAGAHARA Masaaki
Bulletin of the Iron and Steel Institute of Japan   8(5) 297-302   May 2003
NAGAHARA Masaaki, YAMAMOTO Yutaka
Transactions of ISCIE   16(1) 38-43   Jan 2003
A design procedure for data compression and equalization for digital communication systems is developed based on the multirate sampled-data H∞ control theory. The procedure provides transmitting/receiving filters so as to m...
永原 正章, 山本 裕
システム制御情報学会論文誌 = Transactions of the Institute of Systems, Control and Information Engineers   16(1) 38-43   2003
A design procedure for data compression and equalization for digital communication systems is developed based on the multirate sampled-data H∞ control theory. The procedure provides transmitting/receiving filters so as to minimize the error betwee...
M. Nagahara; Y. Yamamoto
Proceedings of the IEEE Conference on Decision and Control   6 6539-6544   2003   [Refereed]
Audio signal compression via sampled-data control theory
Shinjiro Ashida,Masaaki Nagahara,Yutaka Yamamoto
SICE Annual Conference 2003,2003      2003   [Refereed]
Nagahara Masaaki,Yutaka Yamamoto
Proc. 42nd IEEE Conf. on Decision and Control,Hawaii      2003   [Refereed]
永原 正章
Proc. of 42nd Conf. on Decision and Control,      2003   [Refereed]
IWAKURA Ken, IKEDA Fumiaki, YAMAMOTO Yutaka, NAGAHARA Masaaki, SHIMADA Junichi, KAWAKAMI Makoto, ENDO Masaharu
電気学会研究会資料. RM, 回転機研究会   SA-02(22-39) 101-104   Sep 2002
NAGAHARA Masaaki, YAMAMOTO Yutaka
Journal of the Society of Instrument and Control Engineers   41(7) 491-495   Jul 2002
WAKASA Yuji, YASUFUKU Daisuke, NAGAHARA Masaaki, YAMAMOTO Yutaka
T. SICE   38(5) 462-468   2002
This paper presents a practically efficient method for designing an interpolator that minimizes the L2-induced norm of the error system between the interpolator and a time-delay. The method is based on the so-called cutting-plane...
Approximating sampled-data systems with applications to digital redesign
Y. Yamamoto; B.D.O. Anderson; M. Nagahara
Proceedings of the IEEE Conference on Decision and Control   4 3724-3729   2002   [Refereed]
Optimal FIR approximation for discrete-time IIR filters
Yutaka Yamamoto,Brian D. O. Anderson,Masaaki Nagahara,Yoko Koyanagi
Proc. 4th Asian Control Conference,Singapore      2002   [Refereed]
Approximating sampled-data systems with applications to digital redesign
Yutaka Yamamoto,Brian D. O. Anderson,Masaaki Nagahara
Proc. 41st IEEE Conference on Decision and Control,Las Vegas      2002   [Refereed]
NAGAHARA Masaaki, YAMAMOTO Yutaka
Transactions of ISCIE   14(10) 483-489   Oct 2001
A design procedure for interpolators is developed based on sampled-data control theory. The procedure provides an interpolator which minimizes the L2-induced norm of the error system between the interpolator and a time-delay, and...
YAMAMOTO Yutaka, NAGAHARA Masaaki
SYSTEMS, CONTROL AND INFORMATION   45(4) 162-167   2001
Optimal wavelet expansion via sampled-data control theory
K. Kashima; Y. Yamamoto; M. Nagahara
Proceedings of the IEEE Conference on Decision and Control   5 4788-4793   2001   [Refereed]
Design for digital communication systems via sample-data H-infinity control
Masaaki Nagahara,Yutaka Yamamoto
IFAC Workshop on Periodic Control Systems      2001   [Refereed]
Optimal Wavelet Expansion via Sampled-Data Control
K. Kashima, Y. Yamamoto and M. Nagahara
第1回SICE制御部門大会      2001
A new design for sample-rate converters
M. Nagahara; Y. Yamamoto
Proceedings of the IEEE Conference on Decision and Control   5 4296-4301   2000   [Refereed]
Multirate signal reconstruction and filter design via sampled-data H-infinity control
永原 正章
MTNS2000,      2000   [Refereed]

Books etc

 
Digital filter design via sampled-data control theory (book chapter)
永原 正章
Control and Modeling of Complex Systems: Cybernetics in the 21st Century, Birkhauser,pp. 31-43   2003   
YY filter -- a paradigm of digital signal processing (book chapter)
M. Nagahara
2010   
Min-max design of FIR digital filters by semidefinite programming (book chapter)
M. Nagahara
Oct 2011   
Active noise control with sampled-data filtered-x adaptive algorithm (book chapter)
M. Nagahara, K. Hamaguchi, and Y. Yamamoto
Mathematical System Theory - Festschrift in Honor of Uwe Helmke on the Occasion of his Sixtieth Birthday, pp. 275-290, CreateSpace, 2013. ISBN 978-1470044008   Oct 2013   

Conference Activities & Talks

 
From Sampled-data Control to Signal Processing [Invited]
Y. Yamamoto and M. Nagahara
The 21st International Symposium on Mathematical Theory of Networks and Systems (MTNS2014)   8 Jul 2014   

Research Grants & Projects

 
Study on Sampled-Data Control Theory
Study on Digital Signal Processing

Patents

 
特許US 8488823 B2 : METHOD FOR DESIGNING AUDIO SIGNAL PROCESSING SYSTEM FOR HEARING AID, AUDIO SIGNAL PROCESSING SYSTEM FOR HEARING AID, AND HEARING AID
Yutaka Yamamoto, Masaaki Nagahara
特許US 8611680 B2 : METHOD AND APPARATUS FOR REMOVING IMAGE NOISE
Y. Yamamoto, M. Nagahara, and A. Kobayashi
特許US 9,158,300 : METHOD FOR DESIGNING POWER CONTROLLER, POWER CONTROLLER, AND POWER CONTROL DEVICE
MIYAZAKI Seiya, KUDOH Takahiro, YAMAMOTO Yutaka, NAGAHARA Masaaki