180 citations · 719 across the 46 of their papers we have counts for
7 papers · 1 filter
Maximum Hands-off Control without Normality Assumption
Takuya Ikeda, Masaaki Nagahara
Maximum hands-off control is a control that has the minimum L0 norm among all feasible controls. It is known that the maximum hands-off (or L0-optimal) control problem is equivalen…
Multiuser Detection by MAP Estimation with Sum-of-Absolute-Values Relaxation
Hampei Sasahara, Kazunori Hayashi, Masaaki Nagahara
In this article, we consider multiuser detection that copes with multiple access interference caused in star-topology machine-to-machine (M2M) communications. We assume that the tr…
Discrete-Valued Control by Sum-of-Absolute-Values Optimization
Takuya Ikeda, Masaaki Nagahara, Shunsuke Ono
In this paper, we propose a new design method of discrete-valued control for continuous-time linear time-invariant systems based on sum-of-absolute-values (SOAV) optimization. We f…
Symbol Detection for Frame-Based Faster-than-Nyquist Signaling via Sum-of-Absolute-Values Optimization
Hampei Sasahara, Kazunori Hayashi, Masaaki Nagahara
In this letter, we propose a new symbol detection method for faster-than-Nyquist signaling (FTNS) systems. Based on frame theory, we formulate a symbol detection problem as a under…
Digital Cancelation of Self-Interference for Single-Frequency Full-Duplex Relay Stations via Sampled-Data Control
Hampei Sasahara, Masaaki Nagahara, Kazunori Hayashi +1
In this article, we propose sampled-data design of digital filters that cancel the continuous-time effect of coupling waves in a single-frequency full-duplex relay station. In this…
Sampled-data Optimization for Self-interference Suppression in Baseband Signal Subspaces
Hampei Sasahara, Masaaki Nagahara, Kazunori Hayashi +1
In this article, we propose a design method of selfinterference cancelers for wireless relay stations taking account of the baseband signal subspace. The problem is first formulate…
Discrete Signal Reconstruction by Sum of Absolute Values
Masaaki Nagahara
In this letter, we consider a problem of reconstructing an unknown discrete signal taking values in a finite alphabet from incomplete linear measurements. The difficulty of this pr…