Masaaki Harada

Orcid: 0000-0002-2748-6456

According to our database1, Masaaki Harada authored at least 175 papers between 1995 and 2024.

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Bibliography

2024
Hadamard matrices of order 36 formed by codewords in some ternary self-dual codes.
Discret. Math., January, 2024

A method for constructing quaternary Hermitian self-dual codes and an application to quantum codes.
CoRR, 2024

Hadamard Matrices of Orders 60 and 64 with Automorphisms of Orders 29 and 31.
Electron. J. Comb., 2024

2023
Some restrictions on the weight enumerators of near-extremal ternary self-dual codes and quaternary Hermitian self-dual codes.
Des. Codes Cryptogr., May, 2023

Construction of extremal Type II Z2k-codes.
Finite Fields Their Appl., March, 2023

Hadamard matrices related to a certain series of ternary self-dual codes.
Des. Codes Cryptogr., March, 2023

Self-dual codes over F5 and <i>s</i>-extremal unimodular lattices.
Discret. Math., 2023

Ternary extremal four-negacirculant self-dual codes.
CoRR, 2023

2022
Self-dual codes over F<sub>5</sub> and s-extremal unimodular lattices.
CoRR, 2022

Construction of extremal Type II Z<sub>2k</sub>-codes.
CoRR, 2022

On the classification of quaternary optimal Hermitian LCD codes.
Cryptogr. Commun., 2022

2021
On the minimum weights of binary LCD codes and ternary LCD codes.
Finite Fields Their Appl., 2021

On the existence of s-extremal singly even self-dual codes.
Discret. Math. Algorithms Appl., 2021

Construction of binary LCD codes, ternary LCD codes and quaternary Hermitian LCD codes.
Des. Codes Cryptogr., 2021

Characterization and classification of optimal LCD codes.
Des. Codes Cryptogr., 2021

2020
Quaternary Hermitian Linear Complementary Dual Codes.
IEEE Trans. Inf. Theory, 2020

Remark on subcodes of linear complementary dual codes.
Inf. Process. Lett., 2020

Construction of s-extremal optimal unimodular lattices in dimension 52.
Int. J. Comput. Math. Comput. Syst. Theory, 2020

On the minimum weights of binary linear complementary dual codes.
Cryptogr. Commun., 2020

New doubly even self-dual codes having minimum weight 20.
Adv. Math. Commun., 2020

2019
On the classification of linear complementary dual codes.
Discret. Math., 2019

On the minimum weights of ternary linear complementary dual codes.
CoRR, 2019

Existence of some optimal maximal entanglement entanglement-assisted quantum codes.
CoRR, 2019

Binary linear complementary dual codes.
Cryptogr. Commun., 2019

Singly even self-dual codes of length 24k + 10 and minimum weight 4k + 2.
Cryptogr. Commun., 2019

On extremal double circulant self-dual codes of lengths 90-96.
Appl. Algebra Eng. Commun. Comput., 2019

2018
New quantum codes constructed from some self-dual additive F4-codes.
Inf. Process. Lett., 2018

Binary extremal self-dual codes of length 60 and related codes.
Des. Codes Cryptogr., 2018

New quantum codes constructed from some self-dual additive 𝑭<sub>4</sub>-codes.
CoRR, 2018

Nonexistence of Certain Singly Even Self-Dual Codes with Minimal Shadow.
Electron. J. Comb., 2018

Architecture of an FPGA-Based Heterogeneous System for Code-Search Problems.
Proceedings of the Supercomputing Frontiers - 4th Asian Conference, 2018

2017
Quasi-unbiased Hadamard matrices and weakly unbiased Hadamard matrices: A coding-theoretic approach.
Math. Comput., 2017

On s-extremal singly even self-dual [24k + 8, 12k + 4, 4k + 2] codes.
Finite Fields Their Appl., 2017

Extremal Type II ℤ<sub>4</sub>-codes constructed from binary doubly even self-dual codes of length 40.
Discret. Math., 2017

New self-dual additive F<sub>4</sub>-codes constructed from circulant graphs.
Discret. Math., 2017

New extremal singly even self-dual codes of lengths 64 and 66.
CoRR, 2017

Some restrictions on weight enumerators of singly even self-dual codes II.
CoRR, 2017

Extremal Type II $\mathbb{Z}_4$-codes constructed from binary doubly even self-dual codes of length $40$.
CoRR, 2017

On the classification of $\mathbb{Z}_4$-codes.
CoRR, 2017

On the performance of optimal double circulant even codes.
Adv. Math. Commun., 2017

On the classification of ℤ<sub>4</sub>-codes.
Adv. Math. Commun., 2017

Performance of ternary double circulant, double twistulant, and self-dual codes.
Appl. Algebra Eng. Commun. Comput., 2017

2016
On the classification of self-dual [20, 10, 9] codes over GF(7).
Finite Fields Their Appl., 2016

On extremal double circulant self-dual codes of lengths $90$ and $92$.
CoRR, 2016

The weight distribution of the self-dual [128, 64] polarity design code.
Adv. Math. Commun., 2016

Note on the residue codes of self-dual ℤ<sub>4</sub>-codes having large minimum Lee weights.
Adv. Math. Commun., 2016

On binary codes related to mutually quasi-unbiased weighing matrices.
Australas. J Comb., 2016

Supplementary difference sets related to a certain class of complex spherical 2-codes.
Australas. J Comb., 2016

2015
Extremal Type I Z<sub>k</sub>-Codes and k-Frames of Odd Unimodular Lattices.
IEEE Trans. Inf. Theory, 2015

On a 5-design related to a putative extremal doubly even self-dual code of length a multiple of 24.
Des. Codes Cryptogr., 2015

New self-dual additive $\mathbb{F}_4$-codes constructed from circulant graphs.
CoRR, 2015

2014
On the existence of extremal Type II ℤ<sub>2k</sub>-codes.
Math. Comput., 2014

On the classification of extremal doubly even self-dual codes with 2-transitive automorphism groups.
Des. Codes Cryptogr., 2014

On the residue codes of self-dual Z4-codes with large minimum Lee weights.
CoRR, 2014

2013
Some extremal self-dual codes and unimodular lattices in dimension 40.
Finite Fields Their Appl., 2013

There is no [21, 5, 14] code over <i>F</i><sub>5</sub>.
Discret. Math., 2013

On the Classification of Extremal Doubly Even Self-Dual Codes with 2-Transitive Automorphism Group
CoRR, 2013

2012
Optimal self-dual Z<sub>4</sub>-codes and a unimodular lattice in dimension 41.
Finite Fields Their Appl., 2012

On some optimal linear codes over F5
CoRR, 2012

A Complete Classification of Doubly Even Self-dual Codes of Length 40.
Electron. J. Comb., 2012

Classification of self-dual codes of length 36.
Adv. Math. Commun., 2012

Application of Bayesian Network to stock price prediction.
Artif. Intell. Res., 2012

Cross-Layer adaptive power save control method for wireless local area networks.
Proceedings of the 8th IEEE International Conference on Wireless and Mobile Computing, 2012

2011
Classification of Quaternary Hermitian Self-Dual Codes of Length 20.
IEEE Trans. Inf. Theory, 2011

An upper bound on the minimum weight of Type II Z<sub>2k</sub>-codes.
J. Comb. Theory, Ser. A, 2011

Performance analysis of coded MIMO OFDM in multipath fading channel.
IEICE Electron. Express, 2011

On the residue codes of extremal Type II Z<sub>4</sub>-codes of lengths 32 and 40.
Discret. Math., 2011

Hadamard matrices of order 32 and extremal ternary self-dual codes.
Des. Codes Cryptogr., 2011

Optimal Self-Dual Z4-Codes and a Unimodular Lattice in Dimension 41
CoRR, 2011

Some Extremal Self-Dual Codes and Unimodular Lattices in Dimension 40
CoRR, 2011

On the Residue Codes of Extremal Type II Z4-Codes of Lengths 32 and 40
CoRR, 2011

A Complete Classification of Doubly Even Self-Dual Codes of Length 40
CoRR, 2011

2010
New binary singly even self-dual codes.
IEEE Trans. Inf. Theory, 2010

Extremal Type II Z<sub>4</sub>-codes of lengths 56 and 64.
J. Comb. Theory, Ser. A, 2010

MDS self-dual codes of lengths 16 and 18.
Int. J. Inf. Coding Theory, 2010

Classification of Generalized Hadamard Matrices <i>H(6,3)</i> and Quaternary Hermitian Self-Dual Codes of Length 18.
Electron. J. Comb., 2010

Mutually Disjoint Steiner Systems <i>S</i>(5, 8, 24) and 5-(24,12,48) Designs.
Electron. J. Comb., 2010

2009
Classification of ternary extremal self-dual codes of length 28.
Math. Comput., 2009

A complete classification of ternary self-dual codes of length 24.
J. Comb. Theory, Ser. A, 2009

There exists no self-dual [24, 12, 10] code over \mathbb <i>F</i><sub>5</sub>{{\mathbb F}_5}.
Des. Codes Cryptogr., 2009

An Upper Bound on the Minimum Weight of Type II ZZ<sub>2k</sub>-Codes
CoRR, 2009

New extremal formally self-dual even codes of length 30.
Adv. Math. Commun., 2009

On the Classification of Self-dual -Codes.
Proceedings of the Cryptography and Coding, 2009

2008
New Nonbinary Self-Dual Codes.
IEEE Trans. Inf. Theory, 2008

Performance Analysis of <i>M</i>-ary Orthogonal Code Shift Keying in Fading Channels.
IEICE Trans. Commun., 2008

Determination of weight enumerators of binary extremal self-dual [42, 21, 8] codes.
Finite Fields Their Appl., 2008

There exists no self-dual [24,12,10] code over F5
CoRR, 2008

An Extremal Doubly Even Self-Dual Code of Length 112.
Electron. J. Comb., 2008

On doubly circulant doubly even self-dual [72, 36, 12] codes.
Australas. J Comb., 2008

2007
Performance Improvement of <i>M</i>-ary CSK by Using a Code Set Having Low Auto- and Cross-Correlation Properties in Multipath Fading Channels.
IEICE Trans. Commun., 2007

Extremal Ternary Self-Dual Codes Constructed from Negacirculant Matrices.
Graphs Comb., 2007

Extremal self-dual codes of length 64 through neighbors and covering radii.
Des. Codes Cryptogr., 2007

An extremal singly even self-dual code of length 88.
Adv. Math. Commun., 2007

On the covering radii of extremal doubly even self-dual codes.
Adv. Math. Commun., 2007

Double circulant and quasi-twisted self-dual codes over F<sub>5</sub> and F<sub>7</sub>.
Adv. Math. Commun., 2007

Optimal double circulant self-dual codes over 𝔽<sub>4</sub> II.
Australas. J Comb., 2007

2006
Some restrictions on weight enumerators of singly even self-dual codes.
IEEE Trans. Inf. Theory, 2006

Classification of extremal double circulant self-dual codes of lengths 74-88.
Discret. Math., 2006

Self-Orthogonal 3-(56, 12, 65) Designs and Extremal Doubly-Even Self-Dual Codes of Length 56.
Des. Codes Cryptogr., 2006

Orthogonal designs and MDS self-dual codes.
Australas. J Comb., 2006

2005
On some self-dual codes and unimodular lattices in dimension 48.
Eur. J. Comb., 2005

Symmetric (4,4)-Nets and Generalized Hadamard Matrices Over Groups of Order 4.
Des. Codes Cryptogr., 2005

Remark on a 5-Design Related to a Putative Extremal Doubly-Even Self-Dual [96, 48, 20] Code.
Des. Codes Cryptogr., 2005

Near-Extremal Formally Self-Dual Even Codes of Lengths 24 and 32.
Des. Codes Cryptogr., 2005

2004
Optimal self-dual codes over F<sub>2</sub>*F<sub>2</sub> with respect to the Hamming weight.
IEEE Trans. Inf. Theory, 2004

On a 5-design related to an extremal doubly even self-dual code of length 72.
J. Comb. Theory, Ser. A, 2004

Extremal self-dual [40, 20, 8] codes with covering radius 7.
Finite Fields Their Appl., 2004

Erratum to "Construction of new extremal self-dual codes" [Discrete Mathematics 263 (2003) 81-91].
Discret. Math., 2004

MDS codes over F<sub>9</sub> related to the ternary Golay code.
Discret. Math., 2004

On the Covering Radius of Ternary Extremal Self-Dual Codes.
Des. Codes Cryptogr., 2004

On the Minimum Weight of Codes over F<sub>5</sub> Constructed from Certain Conference Matrices.
Des. Codes Cryptogr., 2004

2003
Performance Improvement for Coded OFDM Systems with Adaptive Interleaving in Frequency Selective Fading Channel.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003

On the Classification of Self-Dual Codes over F<sub>5</sub>.
Graphs Comb., 2003

Self-orthogonal Codes from Symmetric Designs with Fixed-point-free Auto-morphisms.
Discret. Math., 2003

Construction of new extremal self-dual codes.
Discret. Math., 2003

On self-dual codes over some prime fields.
Discret. Math., 2003

Extremal Self-Dual [50, 25, 10] Codes with Automorphisms of Order 3 and Quasi-Symmetric 2-(49, 9, 6) Designs.
Des. Codes Cryptogr., 2003

Extremal Self-Dual Codes over F<sub>2</sub> × F<sub>2</sub>.
Des. Codes Cryptogr., 2003

Some Extremal Self-Dual Codes with an Automorphism of Order 7.
Appl. Algebra Eng. Commun. Comput., 2003

Formally Self-Dual Codes Related to Type II Codes.
Appl. Algebra Eng. Commun. Comput., 2003

2002
New extremal self-dual codes of length 62 and related extremal self-dual codes.
IEEE Trans. Inf. Theory, 2002

Classification of Extremal Formally Self-Dual Even Codes of Length 22.
Graphs Comb., 2002

Z<sub>6</sub>-Code Constructions of the Leech Lattice and the Niemeier Lattices.
Eur. J. Comb., 2002

Self-dual and maximal self-orthogonal codes over F<sub>7</sub>.
Discret. Math., 2002

Self-dual Z<sub>4</sub>-codes and Hadamard matrices.
Discret. Math., 2002

On Type IV self-dual codes over Z<sub>4</sub>.
Discret. Math., 2002

Orthogonal Designs and Type II Codes over Z2k.
Des. Codes Cryptogr., 2002

2001
On type II codes over F<sub>4</sub>.
IEEE Trans. Inf. Theory, 2001

Orthogonal Frames in the Leech Lattice and a Type II Code over <sub>Integer 22</sub>.
J. Comb. Theory, Ser. A, 2001

An extremal ternary self-dual [28, 14, 9] code with a trivial automorphism group.
Discret. Math., 2001

Codes over and Improvements to the Bounds on Ternary Linear Codes.
Des. Codes Cryptogr., 2001

Classification of Formally Self-Dual Even Codes of Lengths up to 16.
Des. Codes Cryptogr., 2001

Binary Optimal Odd Formally Self-Dual Codes.
Des. Codes Cryptogr., 2001

Note on the g-fold Joint Weight Enumerators of Self-Dual Codes over Z<sub>k</sub>.
Appl. Algebra Eng. Commun. Comput., 2001

Optimal Double Circulant Z<sub>4</sub>-Codes.
Proceedings of the Applied Algebra, 2001

Type II Codes over F<sub>2<sup>r</sup></sub>.
Proceedings of the Applied Algebra, 2001

2000
<i>Z</i><sub>4</sub>-Code Constructions for the Niemeier Lattices and their Embeddings in the Leech Lattice.
Eur. J. Comb., 2000

Extremal self-dual codes with the smallest covering radius.
Discret. Math., 2000

On the existence of extremal Type II codes over Z<sub>6</sub>.
Discret. Math., 2000

Shadow lattices and shadow codes.
Discret. Math., 2000

Double Circulant Self-Dual Codes over GF(5).
Ars Comb., 2000

Optimal Formally Self-Dual Codes over F<sub>5</sub> and F<sub>7</sub>.
Appl. Algebra Eng. Commun. Comput., 2000

OFDM systems with multiple trellis coded modulation.
Proceedings of the 11th IEEE International Symposium on Personal, 2000

1999
New extremal self-dual codes of lengths 36 and 38.
IEEE Trans. Inf. Theory, 1999

Construction of an Extremal Self-Dual Code of Length 62.
IEEE Trans. Inf. Theory, 1999

Construction of optimal Type IV self-dual codes over F<sub>2</sub>+<sub>µ</sub>F<sub>2</sub>.
IEEE Trans. Inf. Theory, 1999

Codes of Lengths 120 and 136 Meeting the Grey-Rankin Bound and Quasi-Symmetric Designs.
IEEE Trans. Inf. Theory, 1999

New extremal self-dual codes of length 68.
IEEE Trans. Inf. Theory, 1999

Type II Codes Over F<sub>2</sub> + u F<sub>2</sub>.
IEEE Trans. Inf. Theory, 1999

Type IV self-dual codes over rings.
IEEE Trans. Inf. Theory, 1999

Type II Codes, Even Unimodular Lattices, and Invariant Rings.
IEEE Trans. Inf. Theory, 1999

On the covering radius of Z<sub>4</sub>-codes and their lattices.
IEEE Trans. Inf. Theory, 1999

An Optimal Unimodular Lattice in Dimension 39.
J. Comb. Theory, Ser. A, 1999

New Optimal Self-Dual Codes over GF(7).
Graphs Comb., 1999

Extremal double circulant Type II codes over Z<sub>4</sub> and construction of 5-(24, 10, 36) designs.
Discret. Math., 1999

Optimal ternary formally self-dual codes.
Discret. Math., 1999

Niemeier lattices and Type II codes over Z<sub>4</sub>.
Discret. Math., 1999

Construction of Extremal Type II Codes over Z.
Des. Codes Cryptogr., 1999

Binary Optimal Linear Rate 1/2 Codes.
Proceedings of the Applied Algebra, 1999

1998
Double Circulant Self-Dual Codes Over Z<sub>2k</sub>.
IEEE Trans. Inf. Theory, 1998

Classification of extremal double-circulant self-dual codes of length up to 62.
Discret. Math., 1998

New Extremal Type II Codes over Z<sub>4</sub>.
Des. Codes Cryptogr., 1998

Classification of Extremal Double Circulant Self-Dual Codes of Lengths 64 to 72.
Des. Codes Cryptogr., 1998

New extremal ternary self-dual codes.
Australas. J Comb., 1998

1997
Extremal binary self-dual codes.
IEEE Trans. Inf. Theory, 1997

Weight Enumerators of Double Circulant Codes and New Extremal Self-Dual Codes.
Des. Codes Cryptogr., 1997

Classification of Extremal Double Circulant Formally Self-Dual Even Codes.
Des. Codes Cryptogr., 1997

Weighing Matrics and Self-Dual Codes.
Ars Comb., 1997

Certain Self-Dual Codes over Z<sub>4</sub> and the Odd Leech Lattice.
Proceedings of the Applied Algebra, 1997

1996
Weight enumerators of extremal singly-even [60, 30, 12] codes.
IEEE Trans. Inf. Theory, 1996

Existence of New Extremal Doubly-Even Codes and Extremal Singly-Even Codes.
Des. Codes Cryptogr., 1996

Robust learning control using universal learning network.
Proceedings of International Conference on Neural Networks (ICNN'96), 1996

Forward propagation universal learning network.
Proceedings of International Conference on Neural Networks (ICNN'96), 1996

1995
New Extremal Doubly-Even [64, 32, 12] Codes.
Des. Codes Cryptogr., 1995

Singly-Even Self-Dual Codes and Hadamard Matrices.
Proceedings of the Applied Algebra, 1995


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