Masato Tajima - My portal - researchmap

Profile Information

Affiliation: (Professor Emeritus at University of Toyama), University of Toyama

Degree: Doctor of Engineering(Waseda University)

J-GLOBAL ID: 200901085415912149
researchmap Member ID: 1000176123

Research Interests

1

Coding Theory

Research Areas

1

Informatics / Information theory /

Research History

2

1991 - 1993

Specialist, Toshiba Communication Systems and Technology Laboratory
1979 - 1987

Researcher, Electronics Equipment Laboratory, Toshiba Research and Development Center

Education

3

Apr, 1974 - Mar, 1979

Doctoral course in Electrical Engineering, Graduate School of Science and Engineering, Waseda University
Apr, 1972 - Mar, 1974

Master's course in Electrical Engineering, Graduate School of Science and Engineering, Waseda University
Apr, 1968 - Mar, 1972

Department of Electrical Engineering, Faculty of Science and Engineering, Waseda University

Committee Memberships

6

Feb, 2010 - Jan, 2013

Delegate, The Society of Instrument and Control Engineers
Mar, 2007 - Dec, 2010

Councilor, The Society of Information Theory and Its Applications
Jan, 2008 - Dec, 2008

Director, The Society of Instrument and Control Engineers Hokuriku Chapter
May, 2004 - May, 2008

Associate Editor for the IEICE Trans. Fundamentals, The Institute of Electronics, Information and Communication Engineers
Jan, 2005 - Dec, 2006

Editorial Director, The Society of Information Theory and Its Applications
Jan, 2003 - Dec, 2004

Secretary, The Society of Instrument and Control Engineers Hokuriku Chapter

Awards

1

May, 2010

2009 IEICE Best Paper Award, Error-Trellis Construction for Convolutional Codes Using Shifted Error/Syndrome-Subsequences, The Institute of Electronics, Information and Communication Engineers

Masato Tajima, Koji Okino, Takashi Miyagoshi

Papers

84

Corrections to “An Innovations Approach to Viterbi Decoding of Convolutional Codes”

Masato Tajima

IEEE Transactions on Information Theory, 67(5) 3183-3185, May, 2021 Peer-reviewed
An Innovations Approach to Viterbi Decoding of Convolutional Codes

Masato Tajima

IEEE Transactions on Information Theory, 65(5) 2704-2722, May, 2019 Peer-reviewed
Innovations, σ‐Fields, and Martingales Associated with Viterbi Decoding of Convolutional Codes

Masato Tajima

IEICE Technical Report, IT2018-98 137-142, Mar, 2019
Trellis Reduction for Tail-Biting Convolutional Codes Using Characteristic Matrices and Cyclically Shifted Code-Subsequences

Masato Tajima

IEICE Technical Report, IT2016-108(506) 61-66, Mar, 2017
Error Trellises and Syndrome Decoding for Convolutional Codes: Different Studies on Convolutional Codes

Masato Tajima

IEICE Fundamentals Review, 9(4) 291-303, Apr, 2016 Invited
Algebraic Construction of KV Trellises for Linear Block Codes

Masato Tajima

IEICE Technical Report, IT2015-120 119-124, Mar, 2016
Tail-Biting Trellis Construction for Linear Block Codes Based on Coset Decomposition

Masato Tajima

Proceedings of SITA2015, 680-685, Nov, 2015
Tail-Biting Trellises for a Tail-Biting Convolutional Code

Masato Tajima

IEICE Technical Report, IT2015-25 47-52, Jul, 2015
Tail-Biting Code/Error-Trellis Construction for Linear Block Codes

Masato Tajima, Koji Okino, Tatsuto Murayama

IEICE Technical Report, IT2014-39 153-158, Jul, 2014
Reduction of Error-Trellises for Tail-Biting Convolutional Codes Using Shifted Error-Subsequences

Masato Tajima, Koji Okino, Tatsuto Murayama

IEICE Technical Report, IT2013-92 241-248, Mar, 2014
Initial (Final) State Estimation in Error-Trellises for Tail-Biting Convolutional Codes

Masato Tajima, Koji Okino, Tatsuto Murayama

IEICE Trans. Fundamentals, E97-A(3) 881-887, Mar, 2014 Peer-reviewed
Starting (Ending) State Estimation in Error-Trellises for Tailbiting Convolutional Codes

Masato Tajima, Koji Okino

Proceedings of the 35th Symposium on Information Theory and its Applications (SITA2012), 251-256, Dec, 2012
Error-Trellises for Tailbiting Convolutional Codes

Masato Tajima, Koji Okino

Proceedings of the 2012 International Symposium on Information Theory and Its Applications (ISITA 2012), 648-652, Oct, 2012 Peer-reviewed
Error-Trellis Construction for Tailbiting Convolutional Codes

Masato Tajima, Koji Okino, Takashi Miyagoshi

IEICE Technical Report, IT2011-59 85-90, Mar, 2012
Simultaneous Code/Error-Trellis Reduction for Convolutional Codes Using Shifted Code/Error-Subsequences

Masato Tajima, Koji Okino, Takashi Miyagoshi

IEICE Trans. Fundamentals, E94-A(12) 2894-2899, Dec, 2011 Peer-reviewed
Simultaneous Code/Error-Trellis Reduction for Convolutional Codes Using Shifted Code/Error-Subsequences

Masato Tajima, Koji Okino, Takashi Miyagoshi

Proceedings of the 2011 IEEE International Symposium on Information Theory (ISIT2011), 2409-2413, Aug, 2011 Peer-reviewed
Code/Error-Trellis Construction for Convolutional Codes Using Shifted Code/Error-Subsequences

Masato Tajima, Koji Okino, Takashi Miyagoshi

IEICE Technical Report, IT2010-73 37-44, Mar, 2011 Invited
Error-Trellis State Complexity of LDPC Convolutional Codes Based on Circulant Matrices

Masato Tajima, Koji Okino, Takashi Miyagoshi

Proceedings of the 2010 International Symposium on Information Theory and Its Applications (ISITA2010), 19-24, Oct, 2010 Peer-reviewed
1-State Error-Trellis Decoding of LDPC Convolutional Codes Based on Circulant Matrices

Masato Tajima, Koji Okino, Takashi Miyagoshi

IEICE Technical Report, IT2009-95 153-158, Mar, 2010
ML Decoding of Convolutional Codes Using an Error Trellis Constructed Based on a Submatrix of a Check Matrix

Masato Tajima, Koji Okino, Takashi Miyagoshi

Proceedings of the 32nd Symposium on Information Theory and its Applications (SITA2009), 697-702, Dec, 2009

More

Misc.

5

B-6-54 An Improved Data Exchange Method for Data Applications in Sensor Networks

Fukuyama Takayuki, Okino Koji, Miyagoshi Takashi, Tajima Masato, Shibata Keiji, Horita Yuukou

Proceedings of the Society Conference of IEICE, 2010(2) 54-54, Aug 31, 2010
高符号化率RSC符号に対するシンドロームトレリスの変形

田島正登, 沖野浩二, 柴田啓司, 河崎善司郎

平成15年電気学会電子・情報・システム部門大会講演論文集, 880-884, 2003
Metrics for syndrome decoding of convolutional codes

M Tajima

ELECTRONICS AND COMMUNICATIONS IN JAPAN PART III-FUNDAMENTAL ELECTRONIC SCIENCE, 79(12) 22-30, Dec, 1996
Code Trellis Degeneration Using SST Viterbi Decoding of QLI Codes

TAJIMA Masato

Proceedings of the Society Conference of IEICE, 1996 148-148, Sep 18, 1996
Decoding mechanism of a scarce state transition-type viterbi decoder for general nonsystematic convolutional codes and its asymptotic behavior on a very noisy channel

M Tajima

ELECTRONICS AND COMMUNICATIONS IN JAPAN PART III-FUNDAMENTAL ELECTRONIC SCIENCE, 78(7) 11-20, Jul, 1995

Books and Other Publications

2

符号理論とその応用

(Role: Contributor, たたみ込み符号とその復号)

培風館, Jul, 2003
数理情報科学事典

(Role: Contributor, 畳み込み符号の復号法，予測理論)

朝倉書店, Nov, 1995

Professional Memberships

4

Feb, 1986 - Present

IEEE
Aug, 1980 - Present

The Institute of Electronics, Information and Communication Engineers
Jun, 1972 - Dec, 2015

The Society of Instrument and Control Engineers
May, 1987 - Dec, 2010

The Society of Information Theory and Its Applications

Works

2

Development of a Digital Secure Telephone

1988 - 1990
Development of an LSI Viterbi Decoder

1986 - 1987

Research Projects

2

Study on the error-trellis complexity of convolutional codes and LDPC convolutional codes

Grant-in-Aid for Scientific Research, 2007 - 2008
マルチメディアにおける符号化技術の応用実験システム

科学研究費補助金, 1995 - 1997

Industrial Property Rights

8

特許1725814 回線品質監視回路

鈴木秀夫, 田島正登
特許1698930 軟判定方式

鈴木秀夫, 田島正登
特許1690226 ビタビ復号回路

中島繁雄, 井上武夫, 鈴木秀夫, 田島正登
特許1669043 位相同期回路

田島正登, 中村誠
特許1582249 ビタビ復号回路

厚木岳夫, 田島正登, 鈴木秀夫, 高橋清明, 武中延夫
特許1582248 最尤誤り訂正回路

厚木岳夫, 鈴木秀夫, 田島正登
特許1546740 ディジタル信号受信回路

杉山文夫, 田島正登, 鈴木秀夫
特許GB 2 198 615 B Path memory control method in Viterbi decoder

Hideo Suzuki, Masato Tajima