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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| NLP | 2014-07-22 11:30 |
Hokkaido | Hakodate City Central Library | Statistical Test for Randomness Based on a Chaotic Unitary Transform Hiroki Okada, Ken Umeno (Kyoto Univ.)  NLP2014-42 |
[more] | NLP2014-42 pp.59-64 |
| NLP | 2014-07-22 11:55 |
Hokkaido | Hakodate City Central Library | The relation between modified Froeschle map and q-Gaussian distribution Kenichi Okubo, Ken Umeno (Kyoto Univ.) NLP2014-43 |
Froeschl'e map has Nekhoroshev regime ($epsilon leq 0.9$) and Chirikov regime ($1.3 leq epsilon$) which are distinguishe... [more] | NLP2014-43 pp.65-70 |
| NLP | 2013-03-15 14:10 |
Chiba | Nishi-Chiba campus, Chiba Univ. | Performance Evaluation of Particle Swarm Optimization Based on Chaotic Random Variables and Lebesgue Spectrum Filter Taito Nagasaki, Ken Umeno (Kyoto Univ.) NLP2012-170 |
[more] | NLP2012-170 pp.137-142 |
| NLP | 2013-03-15 14:45 |
Chiba | Nishi-Chiba campus, Chiba Univ. | CDMA Systems with Orthogonal Chaotic Spreading Sequences
-- Performance Evaluation for Fading Channels and its Application to Power Line Communications -- Masato Iwata, Ken Umeno (Kyoto Univ.) NLP2012-171 |
[more] | NLP2012-171 pp.143-147 |
| NLP | 2013-03-15 16:50 |
Chiba | Nishi-Chiba campus, Chiba Univ. | Chaotic Method for Generating q-Gaussian Random Variables Ken Umeno, Aki-Hiro Sato (Kyoto Univ.) NLP2012-176 |
This study proposes a pseudo random number generator of $q$-Gaussian random variables for a range of $q$ values, $-\inf... [more] |
NLP2012-176 pp.171-176 |
| SIP, RCS | 2009-01-22 13:15 |
Kumamoto | Kumamoto University | Evaluation of codes with complex Lebesgue spectrum filter Etsushi Nameda (ChaosWare), Ryo Takahashi (RIKEN), Ken Umeno (ChaosWare) SIP2008-134 RCS2008-182 |
Lebesgue Spectrum Filter (LSF) is a kind of auto-correlation regulatory filter that makes spreading codes to have expone... [more] | SIP2008-134 RCS2008-182 pp.59-63 |
| NLP | 2008-12-10 09:20 |
Ishikawa | CDMA Characteristics of Complex Orthogonal Codes for Chaos-OFDM Communications Systems Ken Umeno (National Institute of Information and Communications Technology) NLP2008-79 |
Recently reported complex chaos orthogonal codes specified by prime number and its primitive root can construct unitary ... [more] | NLP2008-79 pp.51-54 |
|
| NLP | 2008-12-10 09:45 |
Ishikawa | Extension of Exactly Orthogonal Code for Chaos CDMA Gen Hori, Ken Umeno (RIKEN) NLP2008-80 |
[more] | NLP2008-80 pp.55-58 |
|
| NLP | 2008-12-10 10:10 |
Ishikawa | Performance evaluation of complex chaotic spreading sequence with constant power Ryo Takahashi (RIKEN), Etsushi Nameda, Ken Umeno (ChaosWare Inc.) NLP2008-81 |
A performance of the complex chaotic spreading sequences with constant power in a chip-synchronous CDMA using a complex ... [more] | NLP2008-81 pp.59-62 |
|
| NLP | 2008-12-10 12:50 |
Ishikawa | Asynchronous channels method application to WCDMA systems Etsushi Nameda, Hideaki Terai, Mingfui Kao, Ken Umeno (ChaosWare) NLP2008-83 |
Multiple access interference (MAI) is one of crucial noise components for code devision multiple access (CDMA) systems. ... [more] |
NLP2008-83 pp.69-74 |
|
| NLP | 2008-12-10 14:15 |
Ishikawa | On Parameterization of Nakagami-m Distribution and Maximum Entropy Principle Agung Budiyono, Ken Umeno (The Institute for Physical and Chemical Research) NLP2008-86 |
[more] | NLP2008-86 pp.87-90 |
|
| NLP | 2008-08-01 10:50 |
Kochi | Amplification of SINR by Desynchronizing Phases of Simultaneous Carriers in Chaos CDMA Ryo Takahashi, Ken Umeno (RIKEN) NLP2008-35 |
[more] | NLP2008-35 pp.13-18 |
|
| NLP | 2008-08-01 11:15 |
Kochi | Searching and evaluating the optimal chaotic spreading sequences Etsushi Nameda, Hideaki Terai, Minghui Kao, Ken Umeno (ChaosWare Inc.) NLP2008-36 |
In DS-CDMA systems with asynchronous multiple access, we investigate the optimal code that reduces multiple access intef... [more] | NLP2008-36 pp.19-22 |
|
| NLP | 2008-08-01 11:40 |
Kochi | On Constant Power and Exactly Orthogonal Chaos-CDMA Complex Spreading Sequence
-- Chaos CDMA Approach Towards Unification of OFDM and CDMA -- Ken Umeno (NICT) NLP2008-37 |
[more] | NLP2008-37 pp.23-27 |
|
| NC, NLP | 2008-06-27 16:00 |
Okinawa | University of the Ryukyus | Separation of mixed chaos signals in Lasers by Independent Component Analysis Hiroto Tashiro, Kunihito Hirano, Masahiko Kuraya (Takushoku Univ.), Atsushi Uchida (Saitama Univ.), Shigeru Yoshimori (Takushoku Univ.), Ken Umeno (NICT) |
[more] | |
| NLP | 2007-08-06 10:55 |
Shizuoka | Performance Evaluation of Complete Orthogonal Spreading Sequences Generated by ICA for CDMA with RF Modulation Ryo Takahashi, Masahiro Yukawa, Gen Hori, Ken Umeno (RIKEN) NLP2007-39 |
The performance of the complete orthogonal spreading sequences in the synchronous CDMA with radio frequency (RF) modulat... [more] | NLP2007-39 pp.19-22 |
|
| NLP | 2007-08-06 11:20 |
Shizuoka | Carrier Level Simulation of Chaos CDMA with Received Signal Separation Gen Hori, Ken Umeno, Masahiro Yukawa, Ryo Takahashi (RIKEN), Tomasz Jan Piotrowski (RIKEN/Tokyo Inst. of Tech.) NLP2007-40 |
Chaos CDMA is a kind of CDMA methods based on the properties of chaotic dynamical systems and has distinctive features i... [more] | NLP2007-40 pp.23-28 |
|
| NLP | 2007-08-06 11:45 |
Shizuoka | A Bridge Between Reduced-Rank Adaptive Filtering and Quadratic-Metric Projection Techniques
-- (none) -- Masahiro Yukawa, Gen Hori, Ken Umeno (RIKEN), Isao Yamada (Tokyo Inst. of Tech.) NLP2007-41 |
In this paper, we establish a relationship between the widely-studied reduced-rank adaptive filtering and the recently ... [more] |
NLP2007-41 pp.29-34 |
|
| IT, ISEC, WBS | 2007-03-16 10:20 |
Gunma | Gunma Univ. (Kiryu Campus) | QPKI:Construction of Ubiquitous PKI Systems Using Two-Dimensional Barcode Ken Umeno (NICT) |
[more] | IT2006-97 ISEC2006-152 WBS2006-94 pp.71-74 |
| NS, IN (Joint) |
2007-03-09 08:40 |
Okinawa | Okinawa Convention Center | Chaos-CDMA Based Gapfiller System Ken Umeno (NICT/Chaos Ware) NS2006-207 |
We propose a Gapfiller system using chaotic orthogonal codes which is as orthogonal as the Walsh-Hadamard code. In this ... [more] | NS2006-207 pp.253-258 |
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