Katsumi YAMASHITA


Matrix Decomposition of Precoder Matrix in Orthogonal Precoding for Sidelobe Suppression of OFDM Signals
Hikaru KAWASAKI Masaya OHTA Katsumi YAMASHITA 
Publication:   
Publication Date: 2018/07/01
Vol. E101-B  No. 7  pp. 1716-1722
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
OFDMprecodingsidelobe suppressionQR-decompositionmatrix decomposition
 Summary | Full Text:PDF(1.7MB)

Complexity Suppression of Neural Networks for PAPR Reduction of OFDM Signal
Masaya OHTA Keiichi MIZUTANI Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/09/01
Vol. E93-A  No. 9  pp. 1704-1708
Type of Manuscript:  LETTER
Category: Spread Spectrum Technologies and Applications
Keyword: 
OFDMpeak-to-average power ratio (PAPR)hopfield neural network
 Summary | Full Text:PDF(612.5KB)

Joint Estimation of Carrier Frequency Offset and I/Q Imbalance in the Presence of Time-Varying DC Offset
Umut YUNUS Hai LIN Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/01/01
Vol. E93-B  No. 1  pp. 16-21
Type of Manuscript:  PAPER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
OFDMcarrier frequency offsetI/Q imbalancetime-varying DC offsetdirect-conversion receiver
 Summary | Full Text:PDF(463KB)

Robust Frequency Offset Estimation in the Presence of Time-Varying DC Offset
Umut YUNUS Hai LIN Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/08/01
Vol. E92-B  No. 8  pp. 2577-2583
Type of Manuscript:  PAPER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
carrier frequency offsetDC offsetdirect-conversion receiverOFDM
 Summary | Full Text:PDF(311.4KB)

On the Estimation of Carrier Frequency Offset and DC Offset for OFDM Systems
Hai LIN Takeshi NAKAO Weiming LU Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/10/01
Vol. E91-B  No. 10  pp. 3288-3296
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
carrier frequency offset (CFO)DC offset (DCO)orthogonal frequency division multiplexing (OFDM)
 Summary | Full Text:PDF(311.5KB)

Detection of Leak Location in a Pipeline by Acoustic Signal
Umut YUNUS Masaru TSUNASAKI Yiwei HE Masanobu Kominami  Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/08/01
Vol. E91-A  No. 8  pp. 2053-2061
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
acousticchirp signalreflection characteristicbendbranchleak
 Summary | Full Text:PDF(1.1MB)

PAPR Reduction for PCC-OFDM Systems Using Neural Phase Rotator
Masaya OHTA Hideyuki YAMADA Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/01/01
Vol. E91-A  No. 1  pp. 403-408
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
PCC-OFDMpeak-to-average power ratiointercarrier interferenceneural networks
 Summary | Full Text:PDF(281KB)

Iterative Equalization Technique for Double-Selective Channel Estimation in OFDM Systems
Dongguo LI Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/02/01
Vol. E90-B  No. 2  pp. 401-404
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
channel estimationICIOFDMRayleigh fading
 Summary | Full Text:PDF(153.8KB)

Bayesian Decision Feedback Equalizer with Receiver Diversity Combining
Hai LIN Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/02/01
Vol. E88-A  No. 2  pp. 597-598
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
Bayesian decision feedback equalizerreceiver diversity combining
 Summary | Full Text:PDF(145.1KB)

A Cluster Map Based Blind RBF Decision Feedback Equalizer with Reduced Computational Complexity
Hai LIN Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/10/01
Vol. E87-A  No. 10  pp. 2755-2760
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
blind equalizationRBF equalizerdecision feedbackcluster map
 Summary | Full Text:PDF(284.1KB)

A New Class of Acoustic Echo Cancelling by Using Correlation LMS Algorithm for Double-Talk Condition
Rui CHEN Mohammad Reza ASHARIF Iman TABATABAEI ARDEKANI Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/08/01
Vol. E87-A  No. 8  pp. 1933-1940
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Speech/Acoustic Signal Processing
Keyword: 
echo cancelingLMS algorithmdouble-talkcorrelation functionfrequency domainwavelet domain
 Summary | Full Text:PDF(570.2KB)

An Equalization Technique for High-Speed-Mobile OFDM Systems in Rayleigh Multipath Channels
Dongguo LI Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/01/01
Vol. E87-B  No. 1  pp. 158-160
Type of Manuscript:  LETTER
Category: Fundamental Theories
Keyword: 
OFDMDoppler shiftRayleigh fadingsampling theoremNyquist rate
 Summary | Full Text:PDF(287.5KB)

Cluster Map Based Blind RBF Equalizer
Hai LIN Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/11/01
Vol. E86-A  No. 11  pp. 2822-2829
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
blind equalizationRBF equalizercluster map
 Summary | Full Text:PDF(421.7KB)

Fractionally Spaced Bayesian Decision Feedback Equalizer
Katsumi YAMASHITA Hai LIN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/01/01
Vol. E86-A  No. 1  pp. 215-220
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
digital communication systemBayesian decision feedback equalizerfractionally spaced equalizer
 Summary | Full Text:PDF(372.9KB)

Two-Dimensional Modified Correlation Least Mean Squares Algorithm
Hai LIN Mohammad Reza ASHARIF Katsumi YAMASHITA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2000/09/25
Vol. E83-D  No. 9  pp. 1816-1818
Type of Manuscript:  LETTER
Category: Image Processing, Image Pattern Recognition
Keyword: 
2-D MCLMS algorithm2-D noise cancellerimage restoration
 Summary | Full Text:PDF(256KB)

Application of a Noise-Smoothing Filter Based on Adaptive Windowing to Penumbral Imaging
Yen-Wei CHEN Hiroshi ARAKAWA Zensho NAKAO Katsumi YAMASHITA Ryosuke KODAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/03/25
Vol. E81-A  No. 3  pp. 500-506
Type of Manuscript:  PAPER
Category: Image Theory
Keyword: 
penumbral imaginglocal-statistic filteradaptive windowing signal-dependant noise
 Summary | Full Text:PDF(841.3KB)

Two-Dimensional Least Squares Lattice Algorithm for Linear Prediction
Takayuki NAKACHI Katsumi YAMASHITA Nozomu HAMADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/11/25
Vol. E80-A  No. 11  pp. 2325-2329
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
lattice filter2-D signal processingadaptive filtertexture analysis
 Summary | Full Text:PDF(261.2KB)

A 2-D Adaptive Joint-Process Lattice Estimator for Image Restoration
Takayuki NAKACHI Katsumi YAMASHITA Nozomu HAMADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/01/25
Vol. E80-A  No. 1  pp. 140-147
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
lattice filter2-D signal processingadaptive filterimage processing
 Summary | Full Text:PDF(694.6KB)

An Extended Lattice Model of Two-Dimensional Autoregressive Fields
Takayuki NAKACHI Katsumi YAMASHITA Nozomu HAMADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/11/25
Vol. E79-A  No. 11  pp. 1862-1869
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
lattice filterlinear predictionAR modeling2-D signal processing
 Summary | Full Text:PDF(574.9KB)

2-D Adaptive Autoregressive Modeling Using New Lattice Structure
Takayuki NAKACHI Katsumi YAMASHITA Nozomu HAMADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/08/25
Vol. E79-A  No. 8  pp. 1145-1150
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
lattice filter2-D signal processingadaptive filterlinear predictionAR modeling
 Summary | Full Text:PDF(458.6KB)

A Design Method of an Adaptive Joint-Process IIR Filter with Generalized Lattice Structure
Katsumi YAMASHITA M. H. KAHAI Hayao MIYAGI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/07/25
Vol. E78-A  No. 7  pp. 890-892
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
generalized lattice filtersadaptive filtersIIR filterssystem identification problem
 Summary | Full Text:PDF(174.6KB)

A Design Method of an Adaptive Multichannel IIR Lattice Predictor for k-Step Ahead Prediction
Katsumi YAMASHITA M. H. KAHAI Takayuki NAKACHI Hayao MIYAGI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/08/25
Vol. E76-A  No. 8  pp. 1350-1352
Type of Manuscript:  LETTER
Category: Adaptive Signal Processing
Keyword: 
adaptive lattice fultersmultichannel algorithmspredictorsIIR filters
 Summary | Full Text:PDF(144.3KB)