no code implementations • 27 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.
no code implementations • 23 Dec 2022 • Ayano Nakai-Kasai, Tadashi Wadayama
The proposed approach can be combined with various federated learning algorithms.
no code implementations • 6 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.
1 code implementation • 26 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.
no code implementations • 20 Apr 2020 • Satoshi Takabe, Tadashi Wadayama
Multicast beamforming is a promising technique for multicast communication.
no code implementations • 15 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).
no code implementations • 23 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.
no code implementations • 16 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.
1 code implementation • 25 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 $m$.
no code implementations • 28 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.
1 code implementation • 27 Jul 2017 • Kees A. Schouhamer Immink, Stan Baggen, Ferdaous Chaabane, Yanling Chen, Peter H. N. de With, Hela Gassara, Hamed Gharbi, Adel Ghazel, Khaled Grati, Naira M. Grigoryan, Ashot Harutyunyan, Masayuki Imanishi, Mitsugu Iwamoto, Ken-ichi Iwata, Hiroshi Kamabe, Brian M. Kurkoski, Shigeaki Kuzuoka, Patrick Langenhuizen, Jan Lewandowsky, Akiko Manada, Shigeki Miyake, Hiroyoshi Morita, Jun Muramatsu, Safa Najjar, Arnak V. Poghosyan, Fatma Rouissi, Yuta Sakai, Ulrich Tamm, Joost van der Putten, Fons van der Sommen, A. J. Han Vinck, Tadashi Wadayama, Dirk Wübben, Hirosuke Yamamoto
The 10th Asia-Europe workshop in "Concepts in Information Theory and Communications" AEW10 was held in Boppard, Germany on June 21-23, 2017.
Information Theory Information Theory 68P30, 94A05
no code implementations • 29 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.