Ken UMENO
Professor, Kyoto University
Department Chairman
Address
Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501 JAPAN
Physical Statistics Group,
Course of Mathematical Physics,
Department of Applied Mathematics & Physics,
Graduate School of Informatics,
Kyoto University
Laboratory
313, Faculty of Engineering Integrated Research Bldg.
Yoshida Main Campus, Kyoto University
URL
http://chaosken.amp.i.kyoto-u.ac.jp
TEL & FAX
+81-(0)75-753-4919
E-mail
umeno.ken.8z[at]kyoto-u.ac.jp
([at]→@)
・K. Umeno and M. H. Kao, "Chaos Theory as the answer to limited spectrum?", ITU News, No.10, 2013.
・Chen-An Yang, Kung Yao, Ken Umeno and Ezio Biglieri, "Using Deterministic Chaos for Superefficient Monte Carlo Simulations", IEEE Circuits and Systems Magazine, 13 (2013), pp.26 - 35.
・K. Umeno and A.-H. Sato, "Chaotic Method for Generating q-Gaussian Random Variables", IEEE Transactions on Information Theory, 59 (2013), pp.3199-3209.
・Ken Umeno, "Performance of Chaotic Monte Carlo Computations and Chaos Codes for Communications: Theory and Experiments", AIP Conference Proceedings, 1339 (2011), pp.197-209.
・K Umeno, "Independent Component Analysis of Mixed ChaoticSignals for Communications Systems", Nonlinear Phenomena in Complex Systems, 10 (2007), pp.170-175.
・SJ Kim, K Umeno, A Hasegawa, "Corrections of the NIST Statistical Test Suite for Randomness", arXiv preprint nlin/0401040 (2004).
・K Umeno, A Yamaguchi, "Construction of Optimal Chaotic Spreading Sequence Using Lebesgue Spectrum Filter", IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences, E85-A (2002), pp.849-852.
・CC Chen, K Yao, K Umeno, E Biglieri, "Design of spread-spectrum sequences using chaotic dynamical systems and ergodic theory", IEEE Transactions on Circuits and Systems I, 48 (2001), pp.1110-1114.
・K Umeno, "SNR analysis for Orthogonal Chaotic Spreading Sequences", Nonlinear Analysis, 47 (2001), p.5753.
・K Umeno, "Statistical simulation method and corresponding simulation system responsive to a storing medium in which statistical simulation program is recorded", US Patent No. 6,289,296 (Granted on September 11, 2001)
・K Umeno, K Kitayama, "Apparatus for optically generating chaotic random numbers", US Patent No. 6,263,146 (Granted on July 17, 2001)
・K Umeno, "Chaotic Monte Carlo Computation: A Dynamical Effect of Random-Number Generations", Japanese Journal of Applied Physics, 39 (2000), p.1442.
・K Umeno, K Kitayama, "Improvement of SNR with chaotic spreading sequences for CDMA", IEEE Proc.Information Theory and Communications Workshop (1999), p.106.
・K Umeno, K Kitayama, "Spreading sequences using periodic orbits of chaos for CDMA", Electronics letters, 35 (1999), pp.545-546.
・K Umeno, "Superposition of chaotic processes with convergence to Lévy’s stable law", Physical Review E, 58 (1998), pp.2644-2647.
・K Umeno, "Method of constructing exactly solvable chaos", Physical Review E, 55 (1997), pp.5280-5284.
・K Umeno, "Non-integrable character of Hamiltonian systems with global and symmetric coupling", Physica D, 82 (1995), pp.11-35.
・K Umeno, M Suzuki, "Symplectic and intermittent behaviour of Hamiltonian flow", Physics Letters A, 181 (1993), pp.387-392.
・K Umeno, M Suzuki, "A singular zeta function at the onset of chaos", Physics Letters A, 177 (1993), pp.311-315.
*Recent
- Ryo Takahashi and Ken Umeno, "Performance Evaluation of CDMA Using Chaotic Spreading Sequence with Constant Power in Indoor Power Line Fading Channels", IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. (2014, in press). NEW
- K. Umeno and M. H. Kao, "Chaos Theory as the answer to limited spectrum?", ITU News, No.10, 2013.
- Chen-An Yang, Kung Yao, Ken Umeno and Ezio Biglieri, "Using Deterministic Chaos for Superefficient Monte Carlo Simulations", IEEE Circuits and Systems Magazine, 13 (2013), pp.26 - 35.
- Ken Umeno, "Statistical Mechanics of Information", Mathematical sciences (in Japanese) No. 600 (2013), pp. 35-41.
- K. Umeno and A.-H. Sato, "Chaotic Method for Generating q-Gaussian Random Variables", IEEE Transactions on Information Theory, 59 (2013), pp.3199 - 3209.
Preprints
Correlational properties of two-dimensional solvable chaos on the unit circle
A. H. Sato and K. Umeno
submitted on August 30, 2012
Chaotic Method for Generating q-Gaussian Random Variables
K. Umeno and A. H. Sato
submitted on May 8, 2012, and accepted for publication in IEEE Trans. on Information Theory on December 26, 2012
Chaos Approach to Spectrum Management
from International Telecommunication Union