180 citations · 719 across the 46 of their papers we have counts for
10 papers · 1 filter
Value Function in Maximum Hands-off Control
Takuya Ikeda, Masaaki Nagahara
In this brief paper, we study the value function in maximum hands-off control. Maximum hands-off control, also known as sparse control, is the L0-optimal control among the admissib…
Communication Performance Analysis of Sampled-Data H-infinity Optimal Coupling Wave Canceler
Hampei Sasahara, Masaaki Nagahara, Kazunori Hayashi +1
In this manuscript, we propose a design method of digital filters which cancel coupling waves generated in single-frequency full-duplex wireless relay stations by using the sampled…
Continuity of the Value Function in Sparse Optimal Control
Takuya Ikeda, Masaaki Nagahara
We prove the continuity of the value function of the sparse optimal control problem. The sparse optimal control is a control whose support is minimum among all admissible controls.…
Loop-Back Interference Suppression for OFDM Signals via Sampled-Data Control
Hampei Sasahara, Masaaki Nagahara, Kazunori Hayashi +1
In this article, we consider the problem of loop-back interference suppression for orthogonal frequency division multiplexing (OFDM) signals in amplify-and-forward single-frequency…
Sparsity Methods for Networked Control
Masaaki Nagahara
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…
Maximum Hands-Off Control: A Paradigm of Control Effort Minimization
M. Nagahara, D. E. Quevedo, D. Nesic
In this paper, we propose a new paradigm of control, called a maximum hands-off control. A hands-off control is defined as a control that has a short support per unit time. The max…
Sampled-Data H-infinity Design of Coupling Wave Cancelers in Single-Frequency Full-Duplex Relay Stations
Masaaki Nagahara, Hampei Sasahara, Kazunori Hayashi +1
In this article, we propose sampled-data H-infinity design of digital filters that cancel the continuous-time effect of coupling waves in a single-frequency full-duplex relay stati…
L1 Control Theoretic Smoothing Splines
Masaaki Nagahara, Clyde F. Martin
In this paper, we propose control theoretic smoothing splines with L1 optimality for reducing the number of parameters that describes the fitted curve as well as removing outlier d…
FIR Digital Filter Design by Sampled-Data H-infinity Discretization
Masaaki Nagahara, Yutaka Yamamoto
FIR (finite impulse response) digital filter design is a fundamental problem in signal processing. In particular, FIR approximation of analog filters (or systems) is ubiquitous not…
Hands-Off Control as Green Control
Masaaki Nagahara, Daniel E. Quevedo, Dragan Nesic
In this article, we introduce a new paradigm of control, called hands-off control, which can save energy and reduce CO2 emissions in control systems. A hands-off control is defined…