Isao NAKANISHI


Bias Free Adaptive Notch Filter Based on Fourier Sine Series
Kazuki SHIOGAI Naoto SASAOKA Masaki KOBAYASHI Isao NAKANISHI James OKELLO Yoshio ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/02/01
Vol. E97-A  No. 2  pp. 557-564
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
adaptive signal processingnotch filterexponential filter
 Summary | Full Text:PDF(1.7MB)

Proposal of a Compact Neutron Diffraction System with a Single-Flux-Quantum Signal Processor
Akira FUJIMAKI Isao NAKANISHI Shigeyuki MIYAJIMA Kohei ARAI Yukio AKITA Takekazu ISHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/03/01
Vol. E94-C  No. 3  pp. 254-259
Type of Manuscript:  INVITED PAPER (Special Section on Superconducting Signal Processing Technologies)
Category: 
Keyword: 
neutrondiffractionsingle flux quantumtime-to-digital convertertime-of-flight
 Summary | Full Text:PDF(1.7MB)

Threshold Equalization for On-Line Signature Verification
Isao NAKANISHI Hiroyuki SAKAMOTO Yoshio ITOH Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/08/01
Vol. E91-A  No. 8  pp. 2244-2247
Type of Manuscript:  LETTER
Category: Cryptography and Information Security
Keyword: 
on-line signature verificationscore level fusionthreshold equalizationmulti-matcherDWT
 Summary | Full Text:PDF(253.5KB)

Speech Noise Reduction System Based on Frequency Domain ALE Using Windowed Modified DFT Pair
Isao NAKANISHI Yuudai NAGATA Takenori ASAKURA Yoshio ITOH Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 950-959
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 18th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
speech processingnoise reductionadaptive line enhancerfrequency domaindecorrelation parametermodified DFT pairwindow function
 Summary | Full Text:PDF(1.2MB)

DWT Domain On-Line Signature Verification Using the Pen-Movement Vector
Isao NAKANISHI Hiroyuki SAKAMOTO Naoto NISHIGUCHI Yoshio ITOH Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 1129-1131
Type of Manuscript:  LETTER
Category: Information Security
Keyword: 
on-line signature verificationDWTpen-movement vectorcomputational complexity
 Summary | Full Text:PDF(94.1KB)

Multi-Matcher On-Line Signature Verification System in DWT Domain
Isao NAKANISHI Hiroyuki SAKAMOTO Naoto NISHIGUCHI Yoshio ITOH Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/01/01
Vol. E89-A  No. 1  pp. 178-185
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Information Hiding
Keyword: 
on-line signature verificationDWTmulti-matcherpen-positionpen-movement angle
 Summary | Full Text:PDF(643KB)

Introduction of Orthonormal Transform into Neural Filter for Accelerating Convergence Speed
Isao NAKANISHI Yoshio ITOH Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/02/25
Vol. E83-A  No. 2  pp. 367-370
Type of Manuscript:  Special Section LETTER (Special Section on Intelligent Signal and Image Processing)
Category: 
Keyword: 
transform domain neural filterneural filtermulti-layer neural networksback-propagation algorithmnormalized step size
 Summary | Full Text:PDF(183.8KB)

A New Structure of Frequency Domain Adaptive Filter with Composite Algorithm
Isao NAKANISHI Yoshihisa HAMAHASHI Yoshio ITOH Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/04/25
Vol. E81-A  No. 4  pp. 649-655
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
frequency domain adaptive filtervariable step size algorithmcomposite adaptive algorithmadaptive line enhancerDFTFFT
 Summary | Full Text:PDF(675.5KB)

Reduction of Computational Complexity in the IA Algorithm
Isao NAKANISHI Yoshio ITOH Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/11/25
Vol. E79-A  No. 11  pp. 1918-1921
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
adaptive filterIA algorithmreduction of computational complexityswitching algorithm
 Summary | Full Text:PDF(287.9KB)

Performance Analysis and Improvement of the NACF Algorithm
Isao NAKANISHI Yoshio ITOH Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/08/25
Vol. E79-A  No. 8  pp. 1246-1251
Type of Manuscript:  Special Section LETTER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
adaptive filterperformance analysisbias termvariable step size
 Summary | Full Text:PDF(414.6KB)

A New Adaptive Convergence Factor Algorithm with the Constant Damping Parameter
Isao NAKANISHI Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/06/25
Vol. E78-A  No. 6  pp. 649-655
Type of Manuscript:  Special Section PAPER (Special Section of Papers Selected from 1994 Joint Technical Conference on Circuits/Systems, Computers and Communications (JTC-CSCC '94))
Category: 
Keyword: 
adaptive filteradaptive convergence factor algorithmdamping parameternormalization
 Summary | Full Text:PDF(518.4KB)