Search Results for author: Tadashi Wadayama

Found 12 papers, 3 papers with code

Ordinary Differential Equation-based MIMO Signal Detection

no code implementations27 Apr 2023 Ayano Nakai-Kasai, Tadashi Wadayama

The required signal processing rate in future wireless communication systems exceeds the performance of the latest electronics-based processors.

Precoder Design for Correlated Data Aggregation via Over-the-Air Computation in Sensor Networks

no code implementations6 May 2022 Ayano Nakai-Kasai, Tadashi Wadayama

Over-the-air computation (AirComp) enables efficient wireless data aggregation in sensor networks by simultaneous processing of calculation and communication.

Dimensionality Reduction

Convergence Acceleration via Chebyshev Step: Plausible Interpretation of Deep-Unfolded Gradient Descent

1 code implementation26 Oct 2020 Satoshi Takabe, Tadashi Wadayama

In the second half of the study, %we apply the theory of Chebyshev steps and Chebyshev-periodical successive over-relaxation (Chebyshev-PSOR) is proposed for accelerating linear/nonlinear fixed-point iterations.

Deep Unfolded Multicast Beamforming

no code implementations20 Apr 2020 Satoshi Takabe, Tadashi Wadayama

Multicast beamforming is a promising technique for multicast communication.

Theoretical Interpretation of Learned Step Size in Deep-Unfolded Gradient Descent

no code implementations15 Jan 2020 Satoshi Takabe, Tadashi Wadayama

In this paper, we provide a theoretical interpretation of the learned step size of deep-unfolded gradient descent (DUGD).

Trainable Projected Gradient Detector for Sparsely Spread Code Division Multiple Access

no code implementations23 Oct 2019 Satoshi Takabe, Yuki Yamauchi, Tadashi Wadayama

In this paper, we propose a novel trainable multiuser detector called sparse trainable projected gradient (STPG) detector, which is based on the notion of deep unfolding.

Complex Trainable ISTA for Linear and Nonlinear Inverse Problems

no code implementations16 Apr 2019 Satoshi Takabe, Tadashi Wadayama, Yonina C. Eldar

Complex-field signal recovery problems from noisy linear/nonlinear measurements appear in many areas of signal processing and wireless communications.

Trainable Projected Gradient Detector for Massive Overloaded MIMO Channels: Data-driven Tuning Approach

1 code implementation25 Dec 2018 Satoshi Takabe, Masayuki Imanishi, Tadashi Wadayama, Ryo Hayakawa, Kazunori Hayashi

This paper presents a deep learning-aided iterative detection algorithm for massive overloaded multiple-input multiple-output (MIMO) systems where the number of transmit antennas $n$ is larger than that of receive antennas $m$.

Deep Learning-Aided Projected Gradient Detector for Massive Overloaded MIMO Channels

no code implementations28 Jun 2018 Satoshi Takabe, Masayuki Imanishi, Tadashi Wadayama, Kazunori Hayashi

The paper presents a deep learning-aided iterative detection algorithm for massive overloaded MIMO systems.

Sparse Signal Recovery for Binary Compressed Sensing by Majority Voting Neural Networks

no code implementations29 Oct 2016 Daisuke Ito, Tadashi Wadayama

We found a loss function suitable for sparse signal recovery, which includes a cross entropy-like term and an $L_1$ regularized term.

Cannot find the paper you are looking for? You can Submit a new open access paper.