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IEICE Trans

Satoshi OKAWA

A Ternary Zero-Correlation Zone Sequence Set Having Wide Inter-Subset Zero-Correlation Zone
Takafumi HAYASHI Takao MAEDA Shinya MATSUFUJI Satoshi OKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/11/01
Vol. E94-A  No. 11  pp. 2230-2235
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Sequence
Keyword: 
ternary sequence, zero-correlation zone, Hadamard matrix, inter-subset correlation, inter-cell, mutually orthogonal complementary sets, 
 Summary | Full Text:PDF
A Generalized Construction of Zero-Correlation Zone Sequence Set with Sequence Subsets
Takafumi HAYASHI Takao MAEDA Satoshi OKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/07/01
Vol. E94-A  No. 7  pp. 1597-1602
Type of Manuscript:  LETTER
Category: Spread Spectrum Technologies and Applications
Keyword: 
finite-length sequence, sequence subsets, inter-subset zero-correlation, zero-correlation zone, aperiodic correlation function, periodic correlation function, 
 Summary | Full Text:PDF
The Relations among Watson-Crick Automata and Their Relations with Context-Free Languages
Satoshi OKAWA Sadaki HIROSE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/10/01
Vol. E89-D  No. 10  pp. 2591-2599
Type of Manuscript:  PAPER
Category: Automata and Formal Language Theory
Keyword: 
DNA computer, Watson-Crick automata, formal languages, language family, 
 Summary | Full Text:PDF
On Computational Power of Insertion-Deletion Systems without Using Contexts
Sadaki HIROSE Satoshi OKAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/08/01
Vol. E88-D  No. 8  pp. 1993-1995
Type of Manuscript:  LETTER
Category: Automata and Formal Language Theory
Keyword: 
Insertion-Deletion system, DNA computing, formal language, automaton, 
 Summary | Full Text:PDF
Upper Bounds of the Correlation Functions of a Class of Binary Zero-Correlation-Zone Sequences
Takafumi HAYASHI Takao MAEDA Satoshi OKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/03/01
Vol. E88-A  No. 3  pp. 791-794
Type of Manuscript:  LETTER
Category: Coding Theory
Keyword: 
zero-correlation, binary sequence, upper bounds, 
 Summary | Full Text:PDF
A Class of Ternary Sequence Sets with a Zero-Correlation Zone
Takafumi HAYASHI Satoshi OKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/06/01
Vol. E87-A  No. 6  pp. 1591-1598
Type of Manuscript:  PAPER
Category: Coding Theory
Keyword: 
ternary sequence, finite-length sequence, zero-correlation zone, even correlation function, odd correlation function, 
 Summary | Full Text:PDF
Correction to the Diameter of Trivalent Cayley Graphs
Satoshi OKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/05/01
Vol. E84-A  No. 5  pp. 1269-1272
Type of Manuscript:  Special Section LETTER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
network topology, trivalent Cayley graph, diameter, 
 Summary | Full Text:PDF
Dyck Reductions are More Powerful Than Homomorphic Characterizations
Sadaki HIROSE Satoshi OKAWA Haruhiko KIMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1997/09/25
Vol. E80-D  No. 9  pp. 958-961
Type of Manuscript:  LETTER
Category: Automata,Languages and Theory of Computing
Keyword: 
Dyck language, Dyck reduction, homomorphic characterization, 
 Summary | Full Text:PDF
Homomorphic Characterizations Are More Powerful Than Dyck Reductions
Sadaki HIROSE Satoshi OKAWA Haruhiko KIMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1997/03/25
Vol. E80-D  No. 3  pp. 390-392
Type of Manuscript:  LETTER
Category: Automata,Languages and Theory of Computing
Keyword: 
Dyck language, Dyck reduction, homomorphic characterization, 
 Summary | Full Text:PDF
Set-To-Set Fault Tolerant Routing in Hypercudes*
Qian Ping GU Satoshi OKAWA Shietung PENG 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/04/25
Vol. E79-A  No. 4  pp. 483-488
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
algorithms, interconnection networks, node disjoint path, fault tolerant routing, 
 Summary | Full Text:PDF
Dyck Reductions of Minimal Linear Languages Yield the Full Class of Recursively Enumerable Languages
Sadaki HIROSE Satoshi OKAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1996/02/25
Vol. E79-D  No. 2  pp. 161-164
Type of Manuscript:  LETTER
Category: Automata,Languages and Theory of Computing
Keyword: 
Dyck language, Dyck reduction, recursively enumerable language, minimal linear language, 
 Summary | Full Text:PDF