HAYASHI Takafumi

J-GLOBAL         Last updated: Nov 12, 2018 at 12:11
 
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Name
HAYASHI Takafumi
E-mail
takafumiie.niigata-u.ac.jp
Affiliation
Niigata University
Section
Faculty of Engineering Department of Information Engineering
Job title
Professor
Research funding number
20218580
ORCID ID
0000-0002-7032-3505

Research Areas

 
 

Academic & Professional Experience

 
Oct 2016
 - 
Today
Professor, Faculty of Engineering, Niigata University
 
1989
 - 
1992
University of Tokyo, Research Associate
 
1992
 - 
1993
Aizu Junior College, Associate Professor
 
1993
 - 
2004
/9 University of Aizu. Associate Professor
 
Oct 2004
   
 
- University of Aizu, Professor
 

Education

 
 
 - 
1988
Graduate School, Division of Engineering, The University of Tokyo
 
 
 - 
1984
Faculty of Engineering, The University of Tokyo
 

Published Papers

 
Maeda T, Hayashi T.
Proceedings of 2014 International Symposium on Information Theory and Its Applications, ISITA 2014   669-673   2014   [Refereed]
Hayashi T, Watanabe Y, Matsufuji S, Maeda T.
Proceedings of 2014 International Symposium on Information Theory and Its Applications, ISITA 2014   655-659   2014   [Refereed]
Hayashi T, Watanabe Y, Maeda T.
Proceedings of 2014 International Symposium on Information Theory and Its Applications, ISITA 2014   650-654   2014   [Refereed]
伊藤悠哉, 戸倉一, 山崎治郎, 阿部泰裕, 福原英之, 宮崎敏明, 岩瀬次郎, 林隆史
全国大会講演論文集   2013 373-375   2013   [Refereed]
村澤政成, 戸倉一, 山崎治郎, 阿部泰裕, 福原英之, 宮崎敏明, 矢口勇一, 岡隆一, 岩瀬次郎, 林隆史
全国大会講演論文集   2013 369-371   2013   [Refereed]

Misc

 
Thanh V. Pham, Takafumi Hayashi, Anh T. Pham
2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings   1-6   Jul 2018
© 2018 IEEE. Secure transmission is becoming an essentially important aspect in visible light communication (VLC). In this paper, we investigate the designs of artificial noise (AN)-aided precoding to improve physical layer security in a multi-use...
Takafumi Hayashi, Yodai Watanabe, Takao Maeda, Shinya Matsufuji
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E100A 2187-2194   Oct 2017
Copyright © 2017 The Institute of Electronics, Information and Communication Engineers. The present paper introduces a novel construction of structured ternary sequences having a zero-correlation zone (ZCZ) for both periodic and aperiodic correlat...
Zhenni Li, Shuxue Ding, Takafumi Hayashi, Yujie Li
Neurocomputing   239 165-180   May 2017
© 2017 Elsevier B.V. In this study, we propose two analysis dictionary learning algorithms for sparse representation with analysis model. The problem is formulated with the ℓ1-norm regularizer and with two penalty terms on the analysis dictionary:...
Takafumi Hayashi, Yodai Watanabe, Toshiaki Miyazaki, Anh Pham, Takao Maeda, Shinya Matsufuji
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E100A 953-960   Apr 2017
Copyright © 2017 The Institute of Electronics, Information and Communication Engineers. The present paper introduces the construction of quadriphase sequences having a zero-correlation zone. For a zero-correlation zone sequence set of N sequences,...
Zhenni Li, Shuxue Ding, Takafumi Hayashi, Yujie Li
Digital Signal Processing: A Review Journal   63 86-99   Apr 2017
© 2017 Elsevier Inc. In this study, we propose a novel dictionary learning algorithm with the log-regularizer and simultaneously with the coherence penalty based on proximal operators. Our proposed algorithm simply employs a decomposition scheme a...

Books etc

 
Encyclopedia of Media ant Infromation Studies
HAYASHI Takafumi
Jun 2002   
林 隆文, 雪田 修一
翔泳社   Feb 1995   ISBN:4881351958
林 隆文, 雪田 修一
マグロウヒル出版   May 1994   ISBN:4895015998
田中 肇, 林 隆史, 西 敏夫, 富田 秀実, 高須 厚徳
田中肇   1993   

Research Grants & Projects

 
binary and ternary sequences having zero-correlation zone
Project Year: 1999   
Sequence design for a CDMA system
sequence design for ultrasonic measurement
messaging networking
SOA