Ken Umeno

Publication Activity (10 Years)

Years Active: 2002-2023
Publications (10 Years): 31

Top Topics

Linear Programming

Fourier Transform

Top Venues

IEICE Trans. Commun.

IEICE Trans. Fundam. Electron. Commun. Comput. Sci.

Publications

Pavlos I. Zitis, Shinji Kakinaka, Ken Umeno, Michael P. Hanias, Stavros G. Stavrinides, Stelios M. Potirakis
Investigating Dynamical Complexity and Fractal Characteristics of Bitcoin/US Dollar and Euro/US Dollar Exchange Rates around the COVID-19 Outbreak. Entropy 25 (2) (2023)
Tomoyuki Mao, Hidetoshi Okutomi, Ken Umeno
Analysis of the limit values of chaos degree for infinite number of partitions in asymmetric tent maps. JSIAM Lett. 15 (2023)
Hiroki Matsuyama, Minghui Kao, Ken Umeno
Super orthogonal chaos codes with primitive roots. JSIAM Lett. 15 (2023)
Pavlos I. Zitis, Shinji Kakinaka, Ken Umeno, Stavros G. Stavrinides, Michael P. Hanias, Stelios M. Potirakis
The Impact of COVID-19 on Weak-Form Efficiency in Cryptocurrency and Forex Markets. Entropy 25 (12) (2023)
Hiroki Matsuyama, Minghui Kao, Ken Umeno
Independent component analysis communication using complex spreading sequence with constant power. JSIAM Lett. 15 (2023)
Masaru Shintani, Ken Umeno
General dynamic pricing algorithms based on universal exponential booking curves. JSIAM Lett. 14 (2022)
Masaru Shintani, Ken Umeno
Time-Rescaling regression method for exponential decay time series predictions. JSIAM Lett. 14 (2022)
Yasunari Hikima, Atsushi Iwasaki, Ken Umeno
The Reference Distributions of Maurer's Universal Statistical Test and Its Improved Tests. IEEE Trans. Inf. Theory 68 (4) (2022)
Hirofumi Tsuda, Ken Umeno
Randomization Approaches for Reducing PAPR with Partial Transmit Sequence and Semidefinite Relaxation. IEICE Trans. Commun. (3) (2021)
Masataka Motoyama, Ken Umeno
Demonstration of wireless power coloring. IEICE Electron. Express 18 (5) (2021)
Isao Nakazawa, Ken Umeno
Chaotic property of almost periodic frequency arrangement (APFA). JSIAM Lett. 12 (2020)
Tomoyuki Mao, Hidetoshi Okutomi, Ken Umeno
Investigation of the difference between Chaos Degree and Lyapunov exponent for asymmetric tent maps. JSIAM Lett. 11 (2019)
Hirofumi Tsuda, Ken Umeno
Non-Linear Programming: Maximize SINR for Designing Spreading Sequence. IEEE Trans. Commun. 66 (1) (2018)
Atsushi Iwasaki, Ken Umeno
Randomness Test to Solve Discrete Fourier Transform Test Problems. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (8) (2018)
Hirofumi Tsuda, Ken Umeno
Weyl Spreading Sequence Optimizing CDMA. IEICE Trans. Commun. (3) (2018)
Hirofumi Tsuda, Ken Umeno
Randomization Algorithm for Partial Transmit Sequence with Semidefinite Relaxation. VTC Fall (2018)
Hirofumi Tsuda, Ken Umeno
Randomization Approaches for Reducing PAPR with Partial Transmit Sequences and Semidefinite Relaxation. CoRR (2018)
Atsushi Iwasaki, Ken Umeno
One-stroke polynomials over a ring of modulo $2^w$. JSIAM Lett. 9 (2017)
Hirofumi Tsuda, Ken Umeno
Method to Design UF-OFDM Filter and its Analysis. CoRR (2017)
Hiroki Okada, Ken Umeno
Randomness Evaluation With the Discrete Fourier Transform Test Based on Exact Analysis of the Reference Distribution. IEEE Trans. Inf. Forensics Secur. 12 (5) (2017)
Hiroki Okada, Ken Umeno
Randomness Evaluation with the Discrete Fourier Transform Test Based on Exact Analysis of the Reference Distribution. CoRR (2017)
Hirofumi Tsuda, Ken Umeno
Orthogonal basis spreading sequence for optimal CDMA. JSIAM Lett. 8 (2016)
Hirofumi Tsuda, Ken Umeno
Non-Linear Programming: Maximize SNR for Designing Spreading Sequence - Part II: Conditions for Optimal Spreading Sequences. CoRR (2016)
Hirofumi Tsuda, Ken Umeno
Non-Linear Programming: Maximize SNR for Designing Spreading Sequence - Part I: SNR versus Mean-Square Correlation. CoRR (2016)
Hirofumi Tsuda, Ken Umeno
Orthogonal Basis Spreading Sequence for Optimal CDMA. CoRR (2016)
Atsushi Iwasaki, Ken Umeno
Further improving security of Vector Stream Cipher. CoRR (2016)
Atsushi Iwasaki, Ken Umeno
One-stroke polynomials over a ring of modulo $2^w$. CoRR (2016)
Hirofumi Tsuda, Ken Umeno
SNR Maximization as a Non-Linear Programming -Towards Optimal Spreading Sequence-. CoRR (2016)
Hirofumi Tsuda, Ken Umeno
Weyl Spreading Sequence Optimizing CDMA. CoRR (2016)
Atsushi Iwasaki, Ken Umeno
Periodicity of odd degree Chebyshev polynomials over a ring of modulo $2^w$. CoRR (2016)
Hirofumi Tsuda, Ken Umeno
Numerical Approach to Maximize SNR for CDMA Systems. CoRR (2016)
Ryo Takahashi, Ken Umeno
Performance Evaluation of CDMA Using Chaotic Spreading Sequence with Constant Power in Indoor Power Line Fading Channels. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (7) (2014)
Ken Umeno, Aki-Hiro Sato
Chaotic Method for Generating $q$-Gaussian Random Variables. IEEE Trans. Inf. Theory 59 (5) (2013)
Ken Umeno, Aki-Hiro Sato
Chaotic Method for Generating q-Gaussian Random Variables CoRR (2012)
Aki-Hiro Sato, Ken Umeno
Correlational properties of two-dimensional solvable chaos on the unit circle CoRR (2012)
Ryo Takahashi, Etsushi Nameda, Ken Umeno
Inner angle of triangle on unit circle made of consecutive three points generated by chaotic map. JSIAM Lett. 2 (2010)
Ryo Takahashi, Ken Umeno
Performance Evaluation of Band-Limited Baseband Synchronous CDMA Using Orthogonal ICA Sequences. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (3) (2010)
Ryo Takahashi, Ken Umeno
Performance Analysis of Complex CDMA Using Complex Chaotic Spreading Sequence with Constant Power. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (12) (2009)
Song-Ju Kim, Ken Umeno
Chaos-based communication systems using on-line ICA algorithm. IEICE Electron. Express 5 (14) (2008)
Masahiro Yukawa, Ken Umeno, Gen Hori
Employing LSF at Transmitter Eases MMSE Adaptation at Receiver in Asynchronous CDMA Systems. EURASIP J. Wirel. Commun. Netw. 2008 (2008)
Mikio Hasegawa, Ken Umeno
Solvable Performances of Optimization Neural Networks with Chaotic Noise and Stochastic Noise with Negative Autocorrelation. ICONIP (1) (2007)
Song-Ju Kim, Ken Umeno, Ryo Takahashi
FPGA implementation of EASI algorithm. IEICE Electron. Express 4 (22) (2007)
Song-Ju Kim, Ken Umeno, Akio Hasegawa
Corrections of the NIST Statistical Test Suite for Randomness. IACR Cryptol. ePrint Arch. 2004 (2004)
Ken Umeno, Akihiro Yamaguchi
Construction of Optimal Chaotic Spreading Sequence Using Lebesgue Spectrum Filter. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (4) (2002)