 M. Kishida and M. Nagahara,
Riskaware maximum handsoff control using worstcase conditional valueatrisk,
IEEE Transactions on Automatic Control, 2022 (early access)
DOI: 10.1109/TAC.2023.3235246
 K. Yamamoto, Y. Yamamoto, and M. Nagahara,
Hypertracking and hyperrejection: Control of signals beyond the Nyquist frequency,
IEEE Transactions on Automatic Control, 2022 (early access)
DOI: 10.1109/TAC.2022.3230599
 M. Nagahara,
Sparse control for continuoustime systems,
International Journal of Robust and Nonlinear Control,
Volume 33, Issue 1, pp. 622, Jan 2023 (open access),
DOI: 10.1002/rnc.5858,
MATLAB codes
 M. Nagahara, Y. Iwai, and N. Sebe,
Projection onto the set of rankconstrained structured matrices for reducedorder controller design,
Algorithms, 15(9), 322, 2022
DOI: 10.3390/a15090322
(open access)
 X. Dai and M. Nagahara,
Platooning control of drones with realtime deep learning object detection,
Advanced Robotics, 2022
DOI: 10.1080/01691864.2022.2119888
(open access)
 K. Cai and M. Nagahara,
A new perspective on cooperative control of multiagent systems through different types of graph Laplacians,
Advanced Robotics, 2022
DOI: 10.1080/01691864.2022.2093616
 N. Hayashi and M. Nagahara,
Distributed sparse optimization for source localization over diffusion fields with cooperative spatiotemporal sensing,
Advanced Robotics, 2022 DOI: 10.1080/01691864.2022.2099764
 Y. Fujimoto, H. Sato, and M. Nagahara,
Controller tuning with Bayesian optimization and its acceleration: Concept and experimental validation,
Asian Journal of Control, 2022 (open access)
DOI: 10.1002/asjc.2847
 K. Motonaka, T. Watanabe, Y. Kwon, M. Nagahara, and S. Miyoshi,
Control of a quadrotor group based on maximum handsoff distributed control,
International Journal of Mechatronics and Automation, vol. 8, no. 4, 2021 (open access),
DOI: 10.1504/IJMA.2021.120377
 M. S. Darup, G. Book, D. E. Quevedo, and M. Nagahara,
Fast handsoff control using ADMM realtime iterations,
IEEE Transactions on Automatic Control, vol. 67, no. 10, pp. 54165423, Oct. 2022.
DOI: 10.1109/TAC.2021.3121255
 T. Ikeda and M. Nagahara,
Resourceaware timeoptimal control with multiple sparsity measures,
Automatica, Volume 135, 109957, January 2022.
DOI: 10.1016/j.automatica.2021.109957
 Y. Kumar, S. Sukumar, D. Chatterjee, and M. Nagahara,
Sparse optimal control problems with intermediate constraints: Necessary conditions,
Optimal Control, Applications and Methods, Volume43, Issue2, pp. 369385, March/April 2022.
DOI: 10.1002/oca.2807
 T. Ikeda, M. Nagahara, D. Chatterjee, and S. Srikant,
Constrained smoothing splines by optimal control,
IEEE Control Systems Letters, Vol. 6, pp. 1298–1303, Jun. 2021.
DOI: 10.1109/LCSYS.2021.3092638
 M. Nagahara, M. Ogura, Y. Yamamoto,
Iterative greedy LMI for sparse control,
IEEE Control Systems Letters, Vol. 6, pp. 986–991, Jun. 2021.
DOI: 10.1109/LCSYS.2021.3087964
 M. Nagahara, B. Krishnamachari, M. Ogura, A. Ortega, Y. Tanaka, Y. Ushifusa, and T. Valente,
Control, intervention, and behavioral economics over human social networks against COVID19
(PDF),
Advanced Robotics, vol. 35, no. 11, pp. 733739, 2021
DOI: 10.1080/01691864.2021.1928553
 Shunichi Azuma* and Masaaki Nagahara,
Majority determination in binaryvalued communication networks
(open access),
IEEE Transactions on Control of Network Systems, vol. 8, no. 2, pp. 838846, June 2021
DOI: 10.1109/TCNS.2020.3038839
 Takuya Ikeda and Masaaki Nagahara,
Maximum handsoff control with timespace sparsity,
IEEE Control Systems Letters, Vol. 5, No. 4, pp. 12131218, 2021 (accepted)
DOI: 10.1109/LCSYS.2020.3023265
 Yusuke Fujimoto, Tatsuki Tokushige, and Masaaki Nagahara,
Bayesian LPVFIR Identification of Wheelchair Dynamics and Its Application to Feedforward Control,
SICE Journal of Control, Measurement, and System Integration, Vol. 13, No. 4, pp. 208213. 2020.
DOI:10.9746/jcmsi.13.208
 M. Nagahara, D. Chatterjee, N. Challapalli, and M. Vidyasagar,
CLOT norm minimization for continuous handsoff control,
Automatica, Vol. 113, pp. 108679, 2020
DOI: 10.1016/j.automatica.2019.108679
 K. Nakashima, T. Matsuda, M. Nagahara, and T. Takine,
Multihop TDMAbased wireless networked control systems robust against bursty packet losses: a twopath approach,
IEICE Transactions on Communications, Vol. E103B, No. 3, pp.200210, Mar. 2020
DOI: 10.1587/transcom.2019EBP3110
 H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto,
SelfInterference Suppression based on SampledData Hinfinity Control for Baseband Signal Subspaces,
SICE Journal of Control, Measurement, and System Integration, Vol. 12, No. 5, pp. 182189, Sept 2019
DOI: 10.9746/jcmsi.12.182
 T. Ikeda, M. Nagahara, and K. Kashima,
Maximum Handsoff Distributed Control for Consensus of MultiAgent Systems with Sampleddata State Observation,
IEEE Transactions on Control of Network Systems
Vol. 6, No. 2, pp. 852862, June 2019
DOI: 10.1109/TCNS.2018.2880296
 T. Ikeda and M. Nagahara,
TimeOptimal Handsoff Control for Linear TimeInvariant Systems,
Automatica, Vol. 99, pp. 5458, 2019
DOI: 10.1016/j.automatica.2018.10.004
 N. Hayashi and M. Nagahara,
Distributed Proximal Minimization Algorithm for Constrained Convex Optimization over Strongly Connected Networks,
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Vol. E102A, No. 02, Feb. 2019.
DOI: 10.1587/transfun.E102.A.351
 S. Ohno, Y. Ishihara, and M. Nagahara,
MinMax Design of Error Feedback Quantizers without Overloading,
IEEE Transactions on Circuits and Systems I: Regular Papers, Vol. 65, No. 4, pp. 13951405, Apr.
2018 (open access)
10.1109/TCSI.2017.2758801
 T. Ikeda and M. Nagahara,
Discretevalued Model Predictive Control using SumofAbsoluteValues Optimization,
Asian Journal of Control, Vol. 20, No. 1, pp. 196206, 2018
10.1002/asjc.1596
 S. Ohno, T. Shiraki, M. R. Tariq, and M. Nagahara,
Mean Squared Error Analysis of Quantizers with Error Feedback,
IEEE Transactions on Signal Processing, Vol. 65, No. 22, pp. 59705981, Nov. 2017
(open access)
10.1109/TSP.2017.2745450
 H. Sasahara, K. Hayashi, and M. Nagahara,
Multiuser Detection based on MAP Estimation with SumofAbsoluteValues Relaxation,
IEEE Transactions on Signal Processing, vol. 65, no. 21, pp. 56215634, Nov. 2017.
10.1109/TSP.2017.2740164
 T. Ikeda, M. Nagahara, and S. Ono,
DiscreteValued Control of Linear TimeInvariant Systems by SumofAbsoluteValues Optimization,
IEEE Transactions on Automatic Control, Vol. 62, No. 6, pp. 27502763, June 2017.
(open access)
10.1109/TAC.2016.2627683
 N. Hayashi, M. Nagahara, and Y. Yamamoto,
Robust AC Voltage Regulation of Microgrids in Islanded Mode with Sinusoidal Internal Model,
SICE Journal of Control, Measurement, and System Integration, Vol. 10, No. 2 p. 6269, 2017.
10.9746/jcmsi.10.62
(PDF)
 H. Sasahara, K. Hayashi and M. Nagahara,
Symbol Detection for FasterThanNyquist Signaling by SumofAbsoluteValues Optimization,
IEEE Signal Processing Letters, vol. 23, no. 12, pp. 18531857, Dec. 2016.
10.1109/LSP.2016.2625839
 M. Nagahara, J. Ostergaard, D. E. Quevedo,
Discretetime handsoff control by sparse optimization,
EURASIP Journal on Advances in Signal Processing, 2016:76, Dec. 2016.
(PDF)
10.1186/s1363401603729
 D. Chatterjee, M. Nagahara, D. E. Quevedo, and K. S. M. Rao,
Characterization of maximum handsoff control,
Systems & Control Letters, vol. 94, pp. 3136, Aug. 2016.
10.1016/j.sysconle.2016.05.002
 M. Nagahara and Y. Yamamoto,
Digital repetitive controller design via sampleddata delayed signal reconstruction,
Automatica, vol. 65, pp. 203209, Mar. 2016
10.1016/j.automatica.2015.11.029
 T. Ikeda and M. Nagahara,
Value function in maximum handsoff control for linear systems,
Automatica, vol. 64, pp. 190195, Feb. 2016
(PDF)
10.1016/j.automatica.2015.10.043
 M. Nagahara, D. E. Quevedo, and D. Nesic,
Maximum Handsoff Control: A Paradigm of Control Effort Minimization,
IEEE Transactions on Automatic Control,
Vol. 61, No. 3, pp. 735747, 2016. (PDF)
10.1109/TAC.2015.2452831
honored as 2018 IEEE CSS George S. Axelby Outstanding Paper Award
 M. Nagahara,
Discrete Signal Reconstruction by Sum of Absolute Values,
IEEE Signal Processing Letters,
Vol. 22, no. 10, pp. 15751579, Oct. 2015.
[PDF]
10.1109/LSP.2015.2414932
 H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto,
Digital Cancelation of SelfInterference for SingleFrequency
FullDuplex Relay Stations via SampledData Control,
SICE Journal of Control, Measurement, and System Integration,
Vol. 8, No. 5, pp. 321327, 2015.
 M. Nagahara and C. F. Martin,
L1 Control Theoretic Smoothing Splines,
IEEE Signal Processing Letters, vol. 21, no. 11, pp. 13941397, Nov. 2014.
[PDF]
10.1109/LSP.2014.2337017
 M. Nagahara, D. E. Quevedo, and J. Ostergaard,
Sparse Packetized Predictive Control for Networked Control over Erasure Channels,
IEEE Transactions on Automatic Control,
vol. 59, no. 7, pp. 18991905, July 2014.
[PDF]
10.1109/TAC.2013.2294622
 M. Nagahara and Y. Yamamoto,
Hinfinityoptimal fractional delay filters,
IEEE Transactions on Signal Processing,
Vol. 61, No. 18, pp. 44734480,
2013.
[PDF]
 M. Nagahara and C. F. Martin,
Monotone Smoothing Splines Using General Linear Systems,
Asian Journal of Control, Vol. 5, No. 2, pp. 461468, Mar. 2013.
[PDF]
 K. Hayashi, M. Nagahara, and T. Tanaka,
A User's Guide to Compressed Sensing for Communications Systems,
invited paper, IEICE Trans. on Communications, Vol. E96B, No. 3, pp. 685712, Mar. 2013.
[PDF]
[SCILAB Codes]
honored as 2014 IEICE Communications Society Best Tutorial Paper Award
 M. Nagahara and Y. Yamamoto,
Frequency Domain MinMax Optimization of NoiseShaping DeltaSigma Modulators,
IEEE Transactions on Signal Processing,
Vol. 60, No. 6, pp. 28282839, 2012.
[PDF]
[MATLAB Codes]
 Y. Yamamoto, M. Nagahara and P. P. Khargonekar,
A Brief Overview of Signal Reconstruction via SampledData Hinfinity Optimization,
Applied and Computational Mathematics,
Vol. 11, No. 1, pp. 318, 2012.
[PDF]
 M. Nagahara, T. Matsuda, and K. Hayashi,
Compressive Sampling for Remote Control Systems,
IEICE Trans. on Fundamentals, Vol. E95A, No. 4, pp. 713722, Apr. 2012.
[PDF]
 Y. Yamamoto, M. Nagahara, and P. P. Khargonekar,
Signal Reconstruction via Hinfinity SampledData Control Theory  Beyond the Shannon Paradigm,
IEEE Transactions on Signal Processing, Vol. 60, No. 2, pp. 613625, Feb. 2012.
[PDF]
 T. Matsuda, M. Nagahara, and K. Hayashi,
Link quality classifier with compressed sensing based on
l_{1}l_{2} optimization,
IEEE Communications Letters, vol. 15, no. 10, pp. 11171119, Oct. 2011.
 M. Nagahara, M. Ogura, and Y. Yamamoto,
Hinfinity design of periodically nonuniform interpolation
and decimation for nonbandlimited signals,
SICE Journal of Control, Measurement, and System Integration,
Vol. 4, No. 5, pp. 341348,
2011.
[PDF]
honored as 2012 SICE Best Paper Award
 M. Nagahara and Y. Yamamoto,
Hinfinity optimal approximation for causal spline interpolation,
Signal Processing,
Vol. 91, No. 2, pp. 176184, 2011.
[PDF]
 K. Kashima, Y. Yamamoto and M. Nagahara,
Optimal wavelet expansion via sampleddata control theory,
IEEE Signal Processing Letters,
Vol. 11, Issue 2, pp. 7982, 2004.
[PDF]
 Y. Yamamoto, B. D. O. Anderson, M. Nagahara and Y. Koyanagi,
Optimizing FIR approximation for discretetime IIR filters,
IEEE Signal Processing Letters,
Vol. 10, Issue 9, pp. 273276, 2003.
[PDF]

 Yasuaki Oishi*, Takumi Iwata, Masaaki Nagahara,
Generation of a Sparse Input with a RecedingHorizon Technique: Optimality in the Infinite Horizon,
2023 SICE International Symposium on Control Systems (ISCS), 2023 (accepted)
 Yu Iwai1, Masaaki Nagahara∗, and Noboru Sebe,
Comparative study of static stabilizing controller design by nuclear norm minimization and alternating projection,
The 22nd International Conference on Control, Automation and Systems (ICCAS 2022),
BEXCO, Busan, Korea, Nov. 27~Dec. 01, 2022
 M. Nagahara,
Compressed sensing for sparse control,
2022 SICE Annual Conference (SICE),
Sept 69, 2022, Kumamoto, Japan, 2022.
 D. Nakashima, K. Sato, M. Nagahara,
Extended autonomous flight area control of follower UAV using only the master UAV’s built–in camera,
2022 SICE Annual Conference (SICE),
Sept 69, 2022, Kumamoto, Japan, 2022.
 Masaaki Nagahara*, Yusuke Fujimoto, Yutaka Yamamoto,
Sparse system identification with kernel regularization,
25th International Symposium on Mathematical Theory of Networks and Systems (MTNS2022), 2022
 Masaaki Nagahara*, Daniel Quevedo, Moritz Schulze Darup,
Discretetime Handsoff Feedback Control with Realtime Optimization,
25th International Symposium on Mathematical Theory of Networks and Systems (MTNS2022), 2022
 Mohsen Barforooshan, Jan Ostergaard, and Masaaki Nagahara,
Feedback stabilization robust against communication constraints
for disturbed linear plants via sparse packetized predictive control,
IFAC ROCOND 2022, Kyoto, AugSept. 2022
 M. Nagahara and N. Sebe,
Reducedorder controller design via sparse optimization,
Asian Control Conference, Jeju, Korea, May, 2022.
 Y. Oishi, T. Iwata, and M. Nagahara,
Optimality and sparsity of the recedinghorizon input for sparse control,
Asian Control Conference, Jeju, Korea, May, 2022.
 T. Ikeda, M. Nagahara, D. Chatterjee, and S. Srikant,
Constrained smoothing splines by optimal control,
IEEE LCSS presentation, 60th IEEE Conference on Decision and Control (CDC2021),
Dec. 2021.
 M. Nagahara, M. Ogura, and Y. Yamamoto,
Iterative greedy LMI for sparse control,
IEEE LCSS presentation, 60th IEEE Conference on Decision and Control (CDC2021),
Dec. 2021.
 K. Motonaka, T. Watanabe, Y. Kwon, M. Nagahara, and S. Miyoshi,
Application of maximum handsoff distributed control to a quadrotor group,
IEEE International Conference on Mechatronics and Automation (IEEE ICMA 2021), Aug. 2021.
honored as Best Paper Award in Automation in IEEE ICMA 2021
 M. Nagahara,
Control and intervention over human social networks in COVID19,
IEEE International Conference on Advanced Robotics and Its Social Impacts (ARSO), 2021.
 T. Ikeda and M. Nagahara,
Maximum handsoff control with timespace sparsity,
IEEE LCSS presentation,
2021 American Control Conference (ACC), 2021.
 Z. Zhang and M. Nagahara,
Linear quadratic tracking control with sparsitypromoting regularization,
2021 American Control Conference (ACC), 2021.
 Masaaki Nagahara*, and Dragan Nesic,
An Approach to Minimum Attention Control by Sparse Derivative,
59th IEEE Conference on Decision and Control (CDC2020), 2020
 Noboru Sakamoto*, and Masaaki Nagahara,
The turnpike property in the maximum handsoff control,
59th IEEE Conference on Decision and Control (CDC2020), 2020

Yogesh Kumar, Sukumar Srikant*, Masaaki Nagahara, Debasish Chatterjee, and Daniel E. Quevedo,
Maximum handsoff feedback control for finitetime stabilization,
59th IEEE Conference on Decision and Control (CDC2020), 2020

M. Nagahara, M. S. Darup, and D. Quevedo,
Discretetime Handsoff Feedback Control with Realtime Optimization,
24th International Symposium on Mathematical Theory of Networks and Systems
(MTNS2020; postponed)
 M. Nagahara,
Mathematical properties of maximum handsoff control,
International Conference on Control, Automation and Systems (ICCAS2020),
2020 (to be presented)

Yusuke Fujimoto*, Hiroki Sato, Masaaki Nagahara,
PID controller tuning with Bayesian optimization and its acceleration,
2020 59th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE),
2020.
 M. Nagahara and Y. Yamamoto,
Sparse representation of feedback filters in deltasigma modulators,
2020 IFAC World Conference, Virtual Conference, Germany, 2020.
 K. Yamamoto, Y. Yamamoto, and M. Nagahara,
Hypertracking: a new approach to signals beyond the Nyquist frequency  a brief overview,
2020 IFAC World Conference, Virtual Conference, Germany, 2020.

K. Kunida and M. Nagahara,
Application of maximum handsoff control to cellular metabolic oscillation,
2020 IFAC World Conference, Virtual Conference, Germany, 2020.

M. Kishida, M. Nagahara, and D. Chatterjee,
Discretetime maximum handsoff control with minimum switches,
2019 IEEE Conference on Decision and Control (CDC), pp. 529534,
Nice, France, 11 Dec 2019.

S. Azuma and M. Nagahara,
Majority determination on binaryvalued communication networks,
2019 IEEE Conference on Decision and Control (CDC), pp. 885889,
Nice, France, 11 Dec 2019.

M. Barforooshan, M. Nagahara, and J. Ostergaard,
Sparse packetized predictive control over communication networks with packet dropouts and time delays,
2019 IEEE Conference on Decision and Control (CDC), pp. 82728277,
Nice, France, 13 Dec 2019.
 K. Nakashima, T. Matsuda, M. Nagahara, and T. Takine,
Control Vector Selection with State Clustering for Wireless Networked Control Systems,
IEEE 90th Vehicular Technology Conference: VTC2019Fall, Honolulu, Hawaii, USA, pp.15, 22–25 September 2019.
doi: 10.1109/VTCFall.2019.8891504
 Y. Fujimoto, T. Tokushige, M. Nagahara,
Bayesian LPVFIR identification of wheelchair dynamics,
SICE Annual Conference 2019, Hiroshima, 12 Sept, pp. 10361039, 2019.
 Y. Fujimoto, F. Abe, M. Nagahara,
Room impulse response estimation with kernelbased regularization,
SICE Annual Conference 2019, Hiroshima, 11 Sept, pp. 528531, 2019.
 S. M. Rayyan and M. Nagahara,
StateSpace Realization of Linear TimeInvariant Systems with Maximum Measure of Quality,
12th Asian Control Conference (ASCC), pp. 13761379, 12 June 2019.
 M. Nagahara and D. Chatterjee,
Continuity of the Combined L1L2 Optimal Control for Linear Systems,
5th Indian Control Conference (ICC), pp. 506509, Delhi, Jan, 2019.
 Y. Yamamoto, K. Yamamoto, and M. Nagahara,
Sampleddata Filters with Compactly Supported Acquisition Prefilters,
2018 IEEE Conference on Decision and Control (CDC),
pp. 66506655, Miami Beach, 19 Dec 2018.
 M. Kishida*, M. Barforooshan, and M. Nagahara,
Maximum HandsOff Control for Discretetime Linear Systems Subject to Polytopic Uncertainties,
Conference: 7th IFAC Workshop on Distributed Estimation and Control in Networked Systems (NecSys2018),
pp. 355360, Groningen, Aug. 2018.
 K. Fujimoto, J. Muramatsu, and M. nagahara,
Dynamical Model of Overconfidence Phenomena Due to ZEtype Confirmation Bias,,
IEEE International Conference on Systems, Man, and Cybernetics (SMC2018),
710 Oct 2018.
 M. Nagahara and D. Chatterjee,
Optimal Control with Sparsity Constraints in the Frequency Domain,
SICE Annual Conference,
pp. 398400, Nara, 12 Sept, 2018.
 N. Hayashi and M. Nagahara,
ConsensusBased Distributed EventTriggered Sparse Modeling,
SICE Annual Conference,
pp. 18011805, Nara, 14 Sept, 2018.

Keisuke Nakashima, Takahiro Matsuda, Masaaki Nagahara, and Tetsuya Takine,
Control Vector Selection with Delay Estimation in Wireless Networked Control Systems,
IEEE International Conference on Consumer Electronics (Taichung), pp. 8182, 1921 May 2018.

Kaoru Yamamoto, Masaaki Nagahara, Yutaka Yamamoto,
Signal Reconstruction with Generalized Sampling,
56th IEEE Conference on Decision and Control (CDC2017), Melbourne, Australia, Dec. 1215, 2017.

M. Nagahara, S. Takahashi, H. Higuchi, and T. Takebayashi,
Sparse Optimization of Physical Distribution Systems based on Maximum Handsoff Control,
2017 International Symposium on Nonlinear Theory & Its Applications (NOLTA2017),
Cancun, Mexico, Dec. 47, 2017.

Keisuke Nakashima, Takahiro Matsuda, Masaaki Nagahara, and Tetsuya Takine,
CrossLayer Design of an LQG Controller in Multihop TDMABased Wireless Networked Control Systems,
IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC),
Montreal, QC, Canada, October 813, 2017.

Masaaki Nagahara, Niharika Challapalli, and Mathukumalli Vidyasagar,
CLOT Optimization for Distributed HandsOff Control with Continuity,
SICE Annual Conference 2017, Sept. 21, 2017.

Kaoru Yamamoto, Yutaka Yamamoto, and Masaaki Nagahara,
Hypertracking Beyond the Nyquist Frequency,
Emerging Applications of Control and System Theory (EACST 2017), Dallas, Texas, USA, Sept. 2017.

Kaoru Yamamoto, Yutaka Yamamoto, and Masaaki Nagahara,
Simultaneous rejection of signals below and above the Nyquist frequency,
1st IEEE Conference on Control Technology and Applications (CCTA), Hawaii, USA, Aug. 29, 2017.

Niharika Challapalli, Masaaki Nagahara, and Mathukumalli Vidyasagar,
Continuous Handsoff Control by CLOT Norm Minimization,
Proc. of the 20th IFAC World Congress 2017, pp. 1501915024, Toulouse, France, July 14, 2017.

Hampei Sasahara, Kazunori Hayashi, Masaaki Nagahara,
Symbol Detection for FasterthanNyquist Signaling by SumofAbsoluteValues Optimization,
The 42nd IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2017), 2017.

Shuichi Ohno, Teruyuki Shiraki, M.Rizwan Tariq, Masaaki Nagahara,
RATEDISTORTION ANALYSIS OF DELTASIGMA MODULATORS,
The 42nd IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2017),
2017.

Y. Yamamoto, K. Yamamoto and M. Nagahara,
Tracking of signals beyond the Nyquist frequency,
2016 IEEE 55th Conference on Decision and Control (CDC), Las Vegas, NV, 2016, pp. 40034008.
doi: 10.1109/CDC.2016.7798875

T. Ikeda, M. Nagahara and K. Kashima,
Consensus by maximum handsoff distributed control with sampleddata state observation,
2016 IEEE 55th Conference on Decision and Control (CDC), Las Vegas, NV, 2016, pp. 962966.
doi: 10.1109/CDC.2016.7798392

M. R. Tariq, S. Ohno and M. Nagahara,
Synthesis of IIR error feedback filters for ΔΣ modulators using approximation,
2016 AsiaPacific Signal and Information Processing Association Annual Summit and Conference (APSIPA),
Jeju, 2016.

R. Hayakawa, K. Hayashi, H. Sasahara, and M. Nagahara,
Massive Overloaded MIMO Signal Detection via Convex Optimization with Proximal Splitting,
The 2016 European Signal Processing Conference (EUSIPCO), Aug.Sept. 2016.

T. Ikeda, M. Nagahara and D. E. Quevedo,
Quantized selftriggered control by sumofabsolutevalues optimization,
22nd International Symposium on Mathematical Theory of Networks and Systems (MTNS),
Minneapolis, Jul. 2016.

H. Sasahara, K. Hayashi, M. Nagahara, and Y. Yamamoto,
Control Theoretical Approach for SingleFrequency FullDuplex Wireless Relaying,
22nd International Symposium on Mathematical Theory of Networks and Systems (MTNS),
Minneapolis, Jul. 2016.

T. Ikeda and M. Nagahara,
Fundamental analysis of sparse optimal control and its application to discretevalued control,
2016 American Control Conference (ACC), Boston, Jul. 2016.

T. Ikeda and M. Nagahara,
Maximum handsoff control without normality assumption,
2016 American Control Conference (ACC), Boston, Jul. 2016.

H. Sasahara, K. Hayashi, and M. Nagahara,
Mutiuser Detection by MAP Estimation with SumofAbsoluteValues Relaxation,
IEEE International Conference on Communiations (ICC) 2016, May 2016.

T. Ikeda and M. Nagahara,
Computation of maximum handsoff control,
SICE International Symposium on Control Systems 2016, Nagoya, Mar. 9, 2016.
 H. Sasahara, K. Hayashi, and M. Nagahara,
FasterthanNyquist Signaling by SumofAbsoluteValues,
SICE International Symposium on Control Systems 2016, Nagoya, Mar. 2016.
 Hampei Sasahara, Masaaki Nagahara, Kazunori Hayashi, Yutaka Yamamoto,
Sampleddata Hinfinity optimization for selfinterference suppression in baseband signal subspaces,
54th IEEE Conference on Decision and Control,
Osaka, pp. 72447249, Dec. 18, 2015.
 Hampei Sasahara, Masaaki Nagahara, Kazunori Hayashi, Yutaka Yamamoto,
Timedomain equalization for singlefrequency fullduplex wireless relay using H2 optimal control,
47th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS'15),
Hawaii, Dec. 5, 2015.
 T. Ikeda and M. Nagahara,
Discrete model predictive control by sumofabsolutevalues optimization,
47th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS'15),
Hawaii, Dec. 5, 2015.
 Masaki Ogura, Masaaki Nagahara, and Victor M. Preciado,
L1optimal disturbance rejection for disease spread over timevarying networks,
The First International Symposium on Swarm Behavior and BioInspired Robotics (SWARM2015),
pp. 377378,
October 2830, Kyoto, 2015.
 H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto,
LoopBack Interference Suppression
for OFDM Signals via SampledData Control
10th Asian Control Conference (ASCC), paper ID: 1570072769, pp. 14,
MayJun. 2015.
 T. Ikeda and M. Nagahara,
Continuity of the Value Function in Sparse Optimal Control,
10th Asian Control Conference (ASCC), paper ID: 1570074957, pp. 14,
MayJun. 2015.
 H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto,
Communication Performance Analysis of SampledData
Hinfinity Optimal Coupling Wave Canceler
SICE International Symposium on Control Systems, 5135 (2 pages),
Mar. 2015.
 T. Ikeda and M. Nagahara,
Value Functions in Sparse Optimal and L1 Optimal Controls,
SICE International Symposium on Control Systems, 5133 (6 pages),
Mar. 2015.
 M. Nagahara, H. Sasahara, K. Hayashi, and Y. Yamamoto,
Sampleddata Hinfinity design of coupling wave cancelers in
singlefrequency fullduplex relay stations,
SICE Annual Conference 2014, pp. 401406,
Sept. 2014. (PDF)
 M. Nagahara and Y. Yamamoto,
FIR digital filter design by sampleddata Hinfinity discretization,
The 19th IFAC World Congress, pp. 31103115,
Aug. 2014. (PDF)
 M. Nagahara, D. E. Quevedo, and D. Nesic,
Maximumhandsoff control and L1 optimality,
52nd IEEE Conference on Decision and Control (CDC),
pp. 38253830,
Dec. 2013. (PDF)
 M. Nagahara and Y. Yamamoto,
Optimal discretization of analog filters via sampleddata Hinfinity control theory,
The 2013 IEEE MultiConference on Systems and Control (MSC 2013),
pp. 527532, Aug. 2013. (PDF)
 M. Nagahara and C. F. Martin,
L1optimal splines for outlier rejection,
The 59th World Statistics Congress, pp. 11371142,
Aug. 2013. (PDF)
 M. Nagahara, D. E. Quevedo, and J. Ostergaard,
Packetized predictive control for ratelimited networks via sparse representation,
51st IEEE Conference on Decision and Control (CDC),
pp. 13621367,
Dec. 2012. (PDF)
(Slides)
 M. Nagahara, Y. Yamamoto, S. Miyazaki, T. Kudoh, and N. Hayashi,
Hinfinity control of microgrids involving gas turbine engines and batteries,
51st IEEE Conference on Decision and Control (CDC),
pp. 42414246,
Dec. 2012.
(PDF)
 M. Nagahara, D. Quevedo, and J. Ostergaard,
Sparselypacketized predictive control by orthogonal matching pursuit
Mathematical Theory of Networks and Systems (MTNS2012), paper ID: 0156 (3 pages),
Jul. 2012.
(PDF)
 M. Nagahara and Y. Yamamoto,
Hinfinity optimal fractional delay filters with application to pitch shifting
2012 IFAC Workshop on Time Delay Systems,
pp. 6166, Jun. 2012.
(PDF)
 M. Nagahara, D. E. Quevedo, T. Matsuda, and K. Hayashi,
Compressive sampling for networked feedback control,
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),
pp. 27332736, Mar. 2012.(PDF)
(Poster)
 M. Nagahara, D. E. Quevedo, J. Ostergaard, T. Matsuda, and K. Hayashi,
Sparse Command Generator for Remote Control,
The 9th IEEE International Conference on Control & Automation (ICCA),
pp. 10551059,
Dec. 2011. (PDF)
(Slides)
 M. Nagahara, K. Hanibuchi, and Y. Yamamoto,
Pitch Shifting by HInfinityOptimal Variable Fractional Delay Filters,
IFAC 18th World Congress, pp. 43864391, Aug.
2011. [Demos]
(PDF)
 M. Nagahara, D. E. Quevedo
Sparse Representations for Packetized Predictive Networked Control,
IFAC 18th World Congress, pp. 8489, Aug.
2011.
(PDF)
(Slides)
 M. Nagahara, K. Hanibuchi, and Y. Yamamoto,
Durationinvariant pitchshifting for stringed instruments,
3rd International Conference on Control and Optimization with Industrial Applications (COIA),
paper ID: MAIEE01 (2 pages),
Aug. 2011.
 M. Nagahara, C. F. Martin, and Y. Yamamoto,
Quadratic programming for monotone control theoretic splines,
SICE Annual Conference 2010,
pp. 531534, Taipei, 2010 (PDF)
 M. Nagahara and Y. Yamamoto,
Robust Repetitive Control by SampledData HInfinity Filters,
48th IEEE Conference on Decision and Control and 28th Chinese Control Conference (CDC/CCC),
pp. 81368141, 2009 (PDF)
 M. Nagahara, M. Ogura, and Y. Yamamoto,
A Novel Approach to Repetitive Control via Sampleddata Hinfinity Filters,
the 7th Asian Control Conference (ASCC),
pp. 160165, Aug, 2009 (PDF)
 M. Nagahara and Y. Yamamoto,
Optimal Design of DeltaSigma Modulators via Generalized KYP Lemma,
ICROSSICE International Joint Conference 2009 (ICASSSICE2009),
pp. 43764379, Aug. 2009 (PDF)
 M. Nagahara, K. I. Sato, and Y. Yamamoto,
H2/Hinfinity Approach to the Histogram Method for Density Estimation,
ICROSSICE International Joint Conference 2009 (ICASSSICE2009),
pp. 12301233, Aug. 2009 (PDF)
honored as a finalist of SICE Annual Conference Award
 M. Nagahara and Y. Yamamoto,
Optimal noise shaping in deltasigmal modulators via generalized KYP lemma,
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),
pp. 33813384, Apr. 2009 (PDF)
 M. Nagahara, K. Sato, and Y. Yamamoto,
Hinfinity optimal nonparametric density estimation from quantized samples,
The 40th ISCIE International Symposium on Stochastic Systems Theory
and Its Applications (SSS),
Nov. 2008 (PDF)
 M. Nagahara, M. Ogura, and Y. Yamamoto,
Interpolation of nonuniform decimated signals via sampleddata Hinfinity optimization,
SICE Annual Conference,
pp. 11511154, Aug. 2008
(PDF)
 M. Nagahara and Y. Yamamoto, and Pramod P. Khargonekar,
Stability of signal reconstruction filters via cardinal exponential splines,
IFAC World Congress,
pp. 14141419, Jul. 2008
(PDF)
 M. Nagahara and Y. Yamamoto,
Hybrid design of filteredx adaptive algorithm via sampleddata control theory,
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),
pp. 353356, Apr. 2008
(PDF)
 M. Ogura, M. Nagahara and Y. Yamamoto,
Optimal wavelet expansion via sampleddata Hinfinity control theory,
SICE Annual Conference,
pp. 14221426, Oct. 2007
(PDF)
 M. Nagahara and Y. Yamamoto,
Causal spline interpolation by Hinfinity optimization,
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),
Vol. III, pp. 14691472, Apr. 2007
(PDF)
 M. Nagahara, T. Wada and Y. Yamamoto,
Causal spline interpolation by Hinfinity optimization,
SICEICCAS 2006, pp. 41604163, Oct. 2006
(PDF)
 M. Nagahara, T. Wada and Y. Yamamoto,
Design of deltasigma converters via sampleddata Hinfinity optimization,
Mathematical Theory of Networks and Systems,
MTNS2006, paper ID: FrP09.3 (9 pages), Jul. 2006
(PDF)
 M. Nagahara, T. Wada and Y. Yamamoto,
Design of oversampling deltasigma DA converters via Hinfinity optimization,
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),
Vol. III, pp. 612615, May, 2006
(PDF article,
PDF poster (page 1),
PDF poster (page 2))
 H. Kakemizu, M. Nagahara, A. Kobayashi and Y. Yamamoto,
Noise reduction of JPEG images by sampleddata Hinfinity optimal epsilon filters,
SICE Annual Conference,
pp. 10801085, Aug. 2005
(PDF)
honored as a finalist of
Young Author's Award
 M. Nagahara and Y. Yamamoto,
Optimal design of fractional delay FIR filters without bandlimiting assumption,
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),
pp. 221224, Mar. 2005
(PDF article,
PDF poster)
 Y. Ohta and M. Nagahara,
On the computation of value sets of multilinear functions,
2004 CCA/ISIC/CACSD, pp. 161166, Taipei, Sept.
2004 (PDF)
 G. Ooi, M. Nagahara and Y. Yamamoto,
Repetitive control via sampleddata Hinfinity control,
IFAC Workshop on Periodic Control Systems,
pp. 561565, Aug. 2004
(PDF)
 S. Ashida, H. Kakemizu, M. Nagahara and Y. Yamamoto,
Sampleddata audio signal compression with Huffman coding,
SICE Annual Conference,
pp. 972976, Sapporo, Aug. 2004
(PDF)
 M. Nagahara and Y. Yamamoto,
Optimal design of fractional delay filters,
Proc. of 42nd Conf. on Decision and Control (CDC),
pp. 65396544, Maui, Dec. 2003
(PDF)
 S. Ashida, M. Nagahara and Y. Yamamoto,
Audio signal compression via sampleddata control theory,
SICE Annual Conference,
pp. 11821185, Fukui, Aug.
2003
(PDF)
 Y. Wakasa, D. Yasufuku, M. Nagahara and Y. Yamamoto,
Sampleddata design of interpolators using the cuttingplane method,
Proc. of 41st Conf. on Decision and Control (CDC),
pp. 25642569, Las Vegas, Dec. 2002
(PDF)
 Y. Yamamoto, B. D. O. Anderson and M. Nagahara,
Approximating sampleddata systems with applications to digital redesign,
Proc. of 41st Conf. on Decision and Control (CDC),
pp. 37243729, Las Vegas, Dec. 2002
(PDF)
 J. Shimada, M. Kawakami, S. Endoh, F. Ikeda, M. Nagahara and Y. Yamamoto,
The basis of magnetic navigation system for surgery,,
Computer Assisted Radiology and Surgery (CARS),
Proc. of the 16th International Congress and Exhibition,
p. 1088
June 2629, 2002
 Y. Yamamoto, B. D. O. Anderson, M. Nagahara and Y. Koyanagi,
Optimal FIR approximation for discretetime IIR filters,
Proc. 4th Asian Control Conference (ASCC),
pp. 20082013, Singapore, Sept. 2002
(PDF)
 K. Kashima, Y. Yamamoto and M. Nagahara,
Optimal wavelet expansion via sampleddata control,
40th Conf. on Decision and Control (CDC),
pp. 47884793, Orlando, Dec. 2001 (PDF)
 M. Nagahara and Y. Yamamoto,
Design for digital communication systems via sampled data H infinity control,
IFAC Workshop on Periodic Control Systems,
pp. 211216, CernobbioComo, Aug. 2001
(PDF)
 M. Nagahara and Y. Yamamoto,
A new design for samplerate converters,
39th Conf. on Decision and Control (CDC)
,
pp. 42964301, Sydney, Dec. 2000
(PDF)
 Y. Yamamoto, M. Nagahara and H. Fujioka,
Multirate signal reconstruction and filter design via
sampleddata Hinfinity control,
Mathematical Theory of Networks and Systems, MTNS2000,
CDROM, Perpignan, Jun. 2000 (PDF)
