Hiroshi TSURUMI


A Single-Chip 8-Band CMOS Transceiver for 3G Cellular Systems with Digital Interface
Hiroshi YOSHIDA Takehiko TOYODA Hiroshi TSURUMI Nobuyuki ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/02/01
Vol. E93-A  No. 2  pp. 375-381
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
W-CDMAGSM3Gdirect conversionDC offsetAGC
 Summary | Full Text:PDF(1.1MB)

A Low-Noise Amplifier for WCDMA Terminal with High Tolerance for Leakage Signal from Transmitter
Ryuichi FUJIMOTO Gaku TAKEMURA Masato ISHII Takehiko TOYODA Hiroshi TSURUMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/02/01
Vol. E91-A  No. 2  pp. 521-528
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
low-noise amplifierLNAWCDMATX leakage signalnoise frequency conversionnoise figure NF
 Summary | Full Text:PDF(602.3KB)

Threshold Controlling Scheme for Adaptive Modulation and Coding System
Daisuke TAKEDA Yuk C CHOW Paul STRAUCH Hiroshi TSURUMI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/05/01
Vol. E89-B  No. 5  pp. 1598-1604
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
adaptive modulation and codingSIRCRCtransmission power control
 Summary | Full Text:PDF(870KB)

Soft-Prioritization Based System Selection Strategy for Software Defined Radio
Tomoya TANDAI Toshihisa NABETANI Kiyoshi TOSHIMITSU Hiroshi TSURUMI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/11/01
Vol. E88-B  No. 11  pp. 4176-4185
Type of Manuscript:  Special Section PAPER (Special Section on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
software defined radiointer-system handoververtical handoverprioritization
 Summary | Full Text:PDF(1019.8KB)

A Direct Conversion Receiver for W-CDMA Reducing Current Consumption to 31 mA
Hiroshi YOSHIDA Takehiko TOYODA Makoto ARAI Ryuichi FUJIMOTO Toshiya MITOMO Masato ISHII Rui ITO Tadashi ARAI Tetsuro ITAKURA Hiroshi TSURUMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/06/01
Vol. E88-C  No. 6  pp. 1271-1274
Type of Manuscript:  Special Section LETTER (Special Section on Analog Circuit and Device Technologies)
Category: RF
Keyword: 
direct conversionpower consumptionW-CDMA
 Summary | Full Text:PDF(607.4KB)

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)

Broadband and Flexible Receiver Architecture for Software Defined Radio Terminal Using Direct Conversion and Low-IF Principle
Hiroshi TSURUMI Hiroshi YOSHIDA Shoji OTAKA Hiroshi TANIMOTO Yasuo SUZUKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/06/25
Vol. E83-B  No. 6  pp. 1246-1253
Type of Manuscript:  Special Section PAPER (Special Issue on Software Defined Radio and Its Technologies)
Category: 
Keyword: 
software defined radiodirect conversionlow-IFchannel selectionimage rejection
 Summary | Full Text:PDF(1.5MB)

System-Level Compensation Approach to Overcome Signal Saturation, DC Offset, and 2nd-Order Nonlinear Distortion in Linear Direct Conversion Receiver
Hiroshi TSURUMI Miyuki SOEYA Hiroshi YOSHIDA Takafumi YAMAJI Hiroshi TANIMOTO Yasuo SUZUKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/05/25
Vol. E82-C  No. 5  pp. 708-716
Type of Manuscript:  Special Section PAPER (Special Issue on Low Distortion Technology for Microwave Devices and Circuits)
Category: 
Keyword: 
direct conversion receiverlinear modulation schemeRF stage gain controlinitial burst acquisitionDC offset canceler2nd-order intermodulation distortion
 Summary | Full Text:PDF(791.5KB)

Design Study on RF Stage for Miniature PHS Terminal
Hiroshi TSURUMI Tadahiko MAEDA Hiroshi TANIMOTO Yasuo SUZUKI Masayuki SAITO Kunio YOSHIHARA Kenji ISHIDA Naotaka UCHITOMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/05/25
Vol. E79-C  No. 5  pp. 629-635
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave Devices for Mobile Communications)
Category: Active Devices
Keyword: 
direct conversion, personal handy phone systemRF functional circuit modulebump interconnection technique
 Summary | Full Text:PDF(852.7KB)

1.9 GHz Si Direct Conversion Receiver IC for QPSK Modulation Systems
Chikau TAKAHASHI Ryuichi FUJIMOTO Satoshi ARAI Tetsuro ITAKURA Takashi UENO Hiroshi TSURUMI Hiroshi TANIMOTO Shuji WATANABE Kenji HIRAKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/05/25
Vol. E79-C  No. 5  pp. 644-649
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave Devices for Mobile Communications)
Category: Active Devices
Keyword: 
direct conversion receiver2nd-order distortionQPSK
 Summary | Full Text:PDF(640.6KB)