Ken Umeno

46 papers Journal 44Unranked 2
YearRankTypeTitle / Venue / Authors
2024 J jnl
Chaotic synchronization of mutually coupled nonchaotic systems.
JSIAM Lett.
Keishi Takahisa, Ken Umeno
2024 J jnl
Learnability of chaotic nature of generalized Boole transformations with GANs.
JSIAM Lett.
Suguru Iwasaki, Ken Umeno
2023 J jnl
Analysis of the limit values of chaos degree for infinite number of partitions in asymmetric tent maps.
JSIAM Lett.
Tomoyuki Mao, Hidetoshi Okutomi, Ken Umeno
2023 J jnl
Independent component analysis communication using complex spreading sequence with constant power.
JSIAM Lett.
Hiroki Matsuyama, Minghui Kao, Ken Umeno
2023 J jnl
Investigating Dynamical Complexity and Fractal Characteristics of Bitcoin/US Dollar and Euro/US Dollar Exchange Rates around the COVID-19 Outbreak.
Entropy
Pavlos I. Zitis, Shinji Kakinaka, Ken Umeno, Michael P. Hanias, Stavros G. Stavrinides, Stelios M. Potirakis
2023 J jnl
Super orthogonal chaos codes with primitive roots.
JSIAM Lett.
Hiroki Matsuyama, Minghui Kao, Ken Umeno
2023 J jnl
The Impact of COVID-19 on Weak-Form Efficiency in Cryptocurrency and Forex Markets.
Entropy
Pavlos I. Zitis, Shinji Kakinaka, Ken Umeno, Stavros G. Stavrinides, Michael P. Hanias, Stelios M. Potirakis
2022 J jnl
General dynamic pricing algorithms based on universal exponential booking curves.
JSIAM Lett.
Masaru Shintani, Ken Umeno
2022 J jnl
The Reference Distributions of Maurer's Universal Statistical Test and Its Improved Tests.
IEEE Trans. Inf. Theory
Yasunari Hikima, Atsushi Iwasaki, Ken Umeno
2022 J jnl
Time-Rescaling regression method for exponential decay time series predictions.
JSIAM Lett.
Masaru Shintani, Ken Umeno
2021 J jnl
Demonstration of wireless power coloring.
IEICE Electron. Express
Masataka Motoyama, Ken Umeno
2021 J jnl
Randomization Approaches for Reducing PAPR with Partial Transmit Sequence and Semidefinite Relaxation.
IEICE Trans. Commun.
Hirofumi Tsuda, Ken Umeno
2020 J jnl
Chaotic property of almost periodic frequency arrangement (APFA).
JSIAM Lett.
Isao Nakazawa, Ken Umeno
2019 J jnl
Investigation of the difference between Chaos Degree and Lyapunov exponent for asymmetric tent maps.
JSIAM Lett.
Tomoyuki Mao, Hidetoshi Okutomi, Ken Umeno
2018 J jnl
Non-Linear Programming: Maximize SINR for Designing Spreading Sequence.
IEEE Trans. Commun.
Hirofumi Tsuda, Ken Umeno
2018 — conf
Randomization Algorithm for Partial Transmit Sequence with Semidefinite Relaxation.
VTC Fall
Hirofumi Tsuda, Ken Umeno
2018 J jnl
Randomization Approaches for Reducing PAPR with Partial Transmit Sequences and Semidefinite Relaxation.
CoRR
Hirofumi Tsuda, Ken Umeno
2018 J jnl
Randomness Test to Solve Discrete Fourier Transform Test Problems.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Atsushi Iwasaki, Ken Umeno
2018 J jnl
Weyl Spreading Sequence Optimizing CDMA.
IEICE Trans. Commun.
Hirofumi Tsuda, Ken Umeno
2017 J jnl
Method to Design UF-OFDM Filter and its Analysis.
CoRR
Hirofumi Tsuda, Ken Umeno
2017 J jnl
One-stroke polynomials over a ring of modulo $2^w$.
JSIAM Lett.
Atsushi Iwasaki, Ken Umeno
2017 J jnl
Randomness Evaluation With the Discrete Fourier Transform Test Based on Exact Analysis of the Reference Distribution.
IEEE Trans. Inf. Forensics Secur.
Hiroki Okada, Ken Umeno
2017 J jnl
Randomness Evaluation with the Discrete Fourier Transform Test Based on Exact Analysis of the Reference Distribution.
CoRR
Hiroki Okada, Ken Umeno
2016 J jnl
Further improving security of Vector Stream Cipher.
CoRR
Atsushi Iwasaki, Ken Umeno
2016 J jnl
Non-Linear Programming: Maximize SNR for Designing Spreading Sequence - Part I: SNR versus Mean-Square Correlation.
CoRR
Hirofumi Tsuda, Ken Umeno
2016 J jnl
Non-Linear Programming: Maximize SNR for Designing Spreading Sequence - Part II: Conditions for Optimal Spreading Sequences.
CoRR
Hirofumi Tsuda, Ken Umeno
2016 J jnl
Numerical Approach to Maximize SNR for CDMA Systems.
CoRR
Hirofumi Tsuda, Ken Umeno
2016 J jnl
One-stroke polynomials over a ring of modulo $2^w$.
CoRR
Atsushi Iwasaki, Ken Umeno
2016 J jnl
Orthogonal Basis Spreading Sequence for Optimal CDMA.
CoRR
Hirofumi Tsuda, Ken Umeno
2016 J jnl
Orthogonal basis spreading sequence for optimal CDMA.
JSIAM Lett.
Hirofumi Tsuda, Ken Umeno
2016 J jnl
Periodicity of odd degree Chebyshev polynomials over a ring of modulo $2^w$.
CoRR
Atsushi Iwasaki, Ken Umeno
2016 J jnl
SNR Maximization as a Non-Linear Programming -Towards Optimal Spreading Sequence-.
CoRR
Hirofumi Tsuda, Ken Umeno
2016 J jnl
Weyl Spreading Sequence Optimizing CDMA.
CoRR
Hirofumi Tsuda, Ken Umeno
2014 J jnl
Performance Evaluation of CDMA Using Chaotic Spreading Sequence with Constant Power in Indoor Power Line Fading Channels.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryo Takahashi, Ken Umeno
2013 J jnl
Chaotic Method for Generating $q$-Gaussian Random Variables.
IEEE Trans. Inf. Theory
Ken Umeno, Aki-Hiro Sato
2012 J jnl
Chaotic Method for Generating q-Gaussian Random Variables
CoRR
Ken Umeno, Aki-Hiro Sato
2012 J jnl
Correlational properties of two-dimensional solvable chaos on the unit circle
CoRR
Aki-Hiro Sato, Ken Umeno
2010 J jnl
Inner angle of triangle on unit circle made of consecutive three points generated by chaotic map.
JSIAM Lett.
Ryo Takahashi, Etsushi Nameda, Ken Umeno
2010 J jnl
Performance Evaluation of Band-Limited Baseband Synchronous CDMA Using Orthogonal ICA Sequences.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryo Takahashi, Ken Umeno
2009 J jnl
Performance Analysis of Complex CDMA Using Complex Chaotic Spreading Sequence with Constant Power.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryo Takahashi, Ken Umeno
2008 J jnl
Chaos-based communication systems using on-line ICA algorithm.
IEICE Electron. Express
Song-Ju Kim, Ken Umeno
2008 J jnl
Employing LSF at Transmitter Eases MMSE Adaptation at Receiver in Asynchronous CDMA Systems.
EURASIP J. Wirel. Commun. Netw.
Masahiro Yukawa, Ken Umeno, Gen Hori
2007 J jnl
FPGA implementation of EASI algorithm.
IEICE Electron. Express
Song-Ju Kim, Ken Umeno, Ryo Takahashi
2007 — conf
Solvable Performances of Optimization Neural Networks with Chaotic Noise and Stochastic Noise with Negative Autocorrelation.
ICONIP (1)
Mikio Hasegawa, Ken Umeno
2004 J jnl
Corrections of the NIST Statistical Test Suite for Randomness.
IACR Cryptol. ePrint Arch.
Song-Ju Kim, Ken Umeno, Akio Hasegawa
2002 J jnl
Construction of Optimal Chaotic Spreading Sequence Using Lebesgue Spectrum Filter.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ken Umeno, Akihiro Yamaguchi