Osamu WATANABE


A 60 GHz Power Amplifier with 10 GHz 1-dB Bandwidth and 13.6% PAE in 65 nm CMOS
Tong WANG Toshiya MITOMO Naoko ONO Shigehito SAIGUSA Osamu WATANABE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/06/01
Vol. E96-C  No. 6  pp. 796-803
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
broadband amplifiersmillimeter wave integrated circuitspower amplifiers
 Summary | Full Text:PDF(2.1MB)

Automated Ulcer Detection Method from CT Images for Computer Aided Diagnosis of Crohn's Disease
Masahiro ODA Takayuki KITASAKA Kazuhiro FURUKAWA Osamu WATANABE Takafumi ANDO Hidemi GOTO Kensaku MORI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2013/04/01
Vol. E96-D  No. 4  pp. 808-818
Type of Manuscript:  Special Section PAPER (Special Section on Medical Imaging)
Category: Medical Image Processing
Keyword: 
ulcersmall and large intestinesdetectioncomputer aided diagnosisCT image
 Summary | Full Text:PDF(1.9MB)

Codestream-Based Identification of JPEG 2000 Images with Different Coding Parameters
Osamu WATANABE Takahiro FUKUHARA Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/04/01
Vol. E95-D  No. 4  pp. 1120-1129
Type of Manuscript:  PAPER
Category: Image Processing and Video Processing
Keyword: 
JPEG 2000image identificationimage searchdigital cinema
 Summary | Full Text:PDF(4.3MB)

Estimating the Gowers Norm of Modulo Functions over Prime Fields
Akinori KAWACHI Hidetoki TANAKA Osamu WATANABE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/03/01
Vol. E95-D  No. 3  pp. 755-762
Type of Manuscript:  Special Section PAPER (Special Section on Foundations of Computer Science – Mathematical Foundations and Applications of Computer Science and Algorithms –)
Category: 
Keyword: 
Gowers normModulo functions
 Summary | Full Text:PDF(242.7KB)

Spectral Analysis of Random Sparse Matrices
Tomonori ANDO Yoshiyuki KABASHIMA Hisanao TAKAHASHI Osamu WATANABE Masaki YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/06/01
Vol. E94-A  No. 6  pp. 1247-1256
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
random symmetric 0,1-matrixsparse matrixeigenvalueeigenvector
 Summary | Full Text:PDF(481KB)

A Triple-Band WCDMA Direct Conversion Receiver IC with Reduced Number of Off-Chip Components and Digital Baseband Control Signals
Osamu WATANABE Rui ITO Toshiya MITOMO Shigehito SAIGUSA Tadashi ARAI Takehiko TOYODA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/06/01
Vol. E91-C  No. 6  pp. 837-843
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
WCDMAdirect conversion receiver(DCR)triple-bandclass AB mixerDC offset canceler
 Summary | Full Text:PDF(715.1KB)

A Fast fc Automatic Tuning Circuit with Wide Tuning Range for WCDMA Direct Conversion Receiver Systems
Osamu WATANABE Rui ITO Shigehito SAIGUSA Tadashi ARAI Tetsuro ITAKURA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/06/01
Vol. E90-C  No. 6  pp. 1247-1252
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
WCDMADCRlowpass filterfc automatic tuning
 Summary | Full Text:PDF(687.9KB)

A Quadrature Demodulator for WCDMA Receiver Using Common-Base Input Stage with Robustness to Transmitter Leakage
Toshiya MITOMO Osamu WATANABE Ryuichi FUJIMOTO Shunji KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/06/01
Vol. E90-C  No. 6  pp. 1241-1246
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
WCDMA receiverdirect conversionquadrature demodulatorcommon-base circuit
 Summary | Full Text:PDF(675.4KB)

A Method of Guaranteeing Image-Quality for Quantization-Based Watermarking Using a Nonorthogonal Transformation
Masaaki FUJIYOSHI Osamu WATANABE Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/06/01
Vol. E88-A  No. 6  pp. 1434-1442
Type of Manuscript:  Special Section PAPER (Special Section on Papers Selected from 2004 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2004))
Category: 
Keyword: 
data hidinginformation embeddingimage-qualityquality guaranteedwatermarking
 Summary | Full Text:PDF(432.9KB)

A Low LO Leakage and Low Power LO Buffer for Direct-Conversion Quadrature Demodulator
Toshiya MITOMO Osamu WATANABE Shoji OTAKA Ryuichi FUJIMOTO Shunji KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/06/01
Vol. E88-C  No. 6  pp. 1212-1217
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit and Device Technologies)
Category: RF
Keyword: 
LO bufferquadrature demodulatordirect-conversionself mixingDC offset
 Summary | Full Text:PDF(475.9KB)

Fully Differential Direct-Conversion Receiver for W-CDMA Reducing DC-Offset Variation
Hiroshi YOSHIDA Takehiko TOYODA Ichiro SETO Ryuichi FUJIMOTO Osamu WATANABE Tadashi ARAI Tetsuro ITAKURA Hiroshi TSURUMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/06/01
Vol. E87-C  No. 6  pp. 901-908
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit and Device Technologies)
Category: 
Keyword: 
direct conversionDC offset cancelerharmonic mixer
 Summary | Full Text:PDF(1.3MB)

A 380-MHz CMOS Linear-in-dB Variable Gain Amplifier with Gain Compensation Techniques for CDMA Systems
Osamu WATANABE Mitsuyuki ASHIDA Tetsuro ITAKURA Shoji OTAKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/06/01
Vol. E86-C  No. 6  pp. 1069-1076
Type of Manuscript:  Special Section PAPER (Special Issue on Devices and Circuits for Next Generation Multi-Media Communication Systems)
Category: 
Keyword: 
variable gain amplifierVGAgain compensationtemperature compensationlinear-in-dB characteristicssquare circuitMOSFETsquare-law regionexponential-law regionCDMA
 Summary | Full Text:PDF(587.4KB)

An Extension of ROI-Based Scalability for Progressive Transmission in JPEG2000 Coding
Osamu WATANABE Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/04/01
Vol. E86-A  No. 4  pp. 765-771
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 15th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
JPEG2000ROIprogressive transmission
 Summary | Full Text:PDF(2MB)

Near Field Optical Recording on Azopolymer Using a Sub-Microsecond Pulse
Taiji IKAWA Chang-Dae KEUM Hideki TAKAGI Masaaki TSUCHIMORI Osamu WATANABE Wataru MORI Masaya HARADA Masahiro TAWATA Hiroshi SHIMOYAMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/06/01
Vol. E85-C  No. 6  pp. 1287-1290
Type of Manuscript:  Special Section LETTER (Special Issue on Recent Progress in Organic Molecular Electronics)
Category: Optoelectronics and Photonics
Keyword: 
optical near fieldazopolymerscanning near-field optical microscopyoptical recordingsurface deformation
 Summary | Full Text:PDF(672.7KB)

A 2-GHz Down-Converter with 3-dB Bandwidth of 600 MHz Using LO Signal Suppressing Output Buffer
Osamu WATANABE Takafumi YAMAJI Tetsuro ITAKURA Ichiro HATTORI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/02/01
Vol. E85-A  No. 2  pp. 286-292
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
analog signal processingintegrated circuitdown-converter
 Summary | Full Text:PDF(944.6KB)

High-Frequency Device-Modeling Techniques for RF-CMOS Circuits
Ryuichi FUJIMOTO Osamu WATANABE Fumie FUJII Hideyuki KAWAKITA Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 520-528
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques Supporting the System LSI Era)
Category: 
Keyword: 
device modelmodel parameterscalinggeometric parameterprocess parameter
 Summary | Full Text:PDF(1.2MB)

Topographical Change of Azopolymer Surface Induced by Optical Near-Field around Photo-Irradiated Nanoparticles
Osamu WATANABE Taiji IKAWA Makoto HASEGAWA Masaaki TSUCHIMORI Yoshimasa KAWATA Chikara EGAMI Okihiro SUGIHARA Naomichi OKAMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/07/25
Vol. E83-C  No. 7  pp. 1125-1127
Type of Manuscript:  Special Section LETTER (Special Issue on Organic Molecular Electronics for the 21st Century)
Category: Thin Film
Keyword: 
optical near-filedtranscription of arrayed structurenanoparticlespulsed laserazopolymer
 Summary | Full Text:PDF(576.2KB)

Design of Integer Wavelet Filters for Image Compression
Hitoshi KIYA Hiroyuki KOBAYASHI Osamu WATANABE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/03/25
Vol. E83-A  No. 3  pp. 487-491
Type of Manuscript:  Special Section LETTER (Special Section of Selected Papers from the 12th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
JPEG2000integer waveletinteger coefficients filterlifting
 Summary | Full Text:PDF(257.7KB)

Simple Sampling Techniques for Discovery Science
Osamu WATANABE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2000/01/25
Vol. E83-D  No. 1  pp. 19-26
Type of Manuscript:  INVITED PAPER (Special Issue on Surveys on Discovery Science)
Category: 
Keyword: 
random samplingthe Chernoff boundthe Hoeffding boundthe central limit theoremsequential samplingadaptive sampling
 Summary | Full Text:PDF(275.6KB)

Voice Activity Detection and Transmission Error Control for Digital Cordless Telephone System
Seishi SASAKI Ichiro MATSUMOTO Osamu WATANABE Kenzo URABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/07/25
Vol. E77-B  No. 7  pp. 948-955
Type of Manuscript:  Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications)
Category: 
Keyword: 
radio communicationADPCMvoice activity detectioncomfort noisetransmission error control
 Summary | Full Text:PDF(575KB)

Polynomially Sparse Variations and Reducibility among Prediction Problems
Naoki ABE Osamu WATANABE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1992/07/25
Vol. E75-D  No. 4  pp. 449-458
Type of Manuscript:  Special Section PAPER (Special Issue on Algorithmic Learning Theory)
Category: 
Keyword: 
prediction preserving reducibilityturing reducibilitymany-one reducibilitypolynomially sparse variantsPAC learning modelcomputational learning theory
 Summary | Full Text:PDF(861.7KB)

FOREWORD
Akira MARUOKA Yasubumi SAKAKIBARA Osamu WATANABE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1992/07/25
Vol. E75-D  No. 4  pp. 403-404
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(173.8KB)

FOREWORD
Toshihide IBARAKI Osamu WATANABE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1992/01/25
Vol. E75-D  No. 1  pp. 3-4
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(128.7KB)