Hiromasa HABUCHI

Free Space Optical Turbo Coded Communication System with Hybrid PPM-OOK Signaling
Ran SUN Hiromasa HABUCHI Yusuke KOZAWA 
Publication:   
Publication Date: 2020/01/01
Vol. E103-A  No. 1  pp. 287-294
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
free space optical communication, hybrid PPM-OOK signaling, turbo code, gamma-gamma channel, effective information rate, capacity, 
 Summary | Full Text:PDF(1.7MB)
Theoretical Analysis on Bit Error Rate of Visible-Light Variable N-Parallel Code-Shift-Keying
Keisuke OSAWA Hiromasa HABUCHI Yusuke KOZAWA 
Publication:   
Publication Date: 2018/12/01
Vol. E101-A  No. 12  pp. 2352-2358
Type of Manuscript:  Special Section PAPER (Special Section on Signal Design and Its Applications in Communications)
Category: Communication Theory and Signals
Keyword: 
lighting constrained visible-light communications, light emitting diode, code-shift-keying, modified prime sequence code, dimming control, 
 Summary | Full Text:PDF(1.3MB)
FOREWORD
Hiromasa HABUCHI 
Publication:   
Publication Date: 2017/01/01
Vol. E100-A  No. 1  pp. 184-184
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(224.1KB)
FOREWORD
Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/01/01
Vol. E99-A  No. 1  pp. 158-158
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(223.7KB)
Optical Wireless LDGM-BPPM with Unequal Transmission Power Allocation Scheme
Kyohei SUMIKAWA Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/12/01
Vol. E97-A  No. 12  pp. 2579-2585
Type of Manuscript:  Special Section PAPER (Special Section on Signal Design and Its Applications in Communications)
Category: Communication Theory and Signals
Keyword: 
LDGM, optical wireless, UTPA, BPPM, 
 Summary | Full Text:PDF(1.2MB)
Theoretical Analysis of New PN Code on Optical Wireless Code-Shift-Keying
Yusuke TAKAMARU Sachin RAI Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/12/01
Vol. E97-A  No. 12  pp. 2572-2578
Type of Manuscript:  Special Section PAPER (Special Section on Signal Design and Its Applications in Communications)
Category: Sequences
Keyword: 
CSK, GMPSC, Hadamard code, PN code, IM/DD, optical wireless communication, 
 Summary | Full Text:PDF(1MB)
FOREWORD
Makoto ITAMI Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/01/01
Vol. E95-A  No. 1  pp. 270-270
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(146.4KB)
A Tracking System Using a Differential Detector for M-ary Bi-orthogonal Spread Spectrum Communication Systems
Junya KAWATA Kouji OHUCHI Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/12/01
Vol. E94-A  No. 12  pp. 2737-2745
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
M-ary bi-orthogonal SS system, differential detector, jitter, canceler, 
 Summary | Full Text:PDF(949.3KB)
Optical Wireless N-CSK with Modified Pseudo Orthogonal M-Sequence Sets
Yusuke KOZAWA Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/11/01
Vol. E94-A  No. 11  pp. 2188-2193
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Spread Spectrum Technologies and Applications
Keyword: 
optical wireless communication, intensity modulation and direct detection, code shift keying, modified pseudo orthogonal M-sequence sets, 
 Summary | Full Text:PDF(990.2KB)
A Comparison of Wireless Optical CDMA Systems Using Chip-Level Detection
Yusuke KOZAWA Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/11/01
Vol. E93-A  No. 11  pp. 2291-2298
Type of Manuscript:  Special Section PAPER (Special Section on Signal Design and its Application in Communications)
Category: Spread Spectrum Technologies and Applications
Keyword: 
wireless OCDMA, optical pseudo-noise code, chip-level detection, bit error rate performance, 
 Summary | Full Text:PDF(556.8KB)
Performance of DS/SS System Using Pseudo-Ternary M-Sequences
Ryo ENOMOTO Hiromasa HABUCHI Koichiro HASHIURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/11/01
Vol. E93-A  No. 11  pp. 2299-2306
Type of Manuscript:  Special Section PAPER (Special Section on Signal Design and its Application in Communications)
Category: Spread Spectrum Technologies and Applications
Keyword: 
spreading code sequence, spread spectrum, signal tracking, delay-locked loop, jitter, bit error rate, 
 Summary | Full Text:PDF(628.9KB)
Construction of Orthogonal Overlapping Pulses for Impulse Radio Communications
Masaru KAMADA Semih OZLEM Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Vol. E91-A  No. 11  pp. 3121-3129
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
impulse radio, UWB, pulse shaping, splines, 
 Summary | Full Text:PDF(401KB)
Nonorthogonal CSK/CDMA with Received-Power Adaptive Access Control Scheme
Nobuyoshi KOMURO Hiromasa HABUCHI Toshinori TSUBOI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/10/01
Vol. E91-A  No. 10  pp. 2779-2786
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Communication Theory
Keyword: 
code shift keying (CSK), access control, nonorthogonal sequence, 
 Summary | Full Text:PDF(402.5KB)
Embedded Frame Synchronization Method for Pulse Position Modulation System
Fumie ONO Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/06/01
Vol. E89-A  No. 6  pp. 1757-1760
Type of Manuscript:  Special Section LETTER (Special Section on Papers Selected from 2005 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC2005))
Category: 
Keyword: 
pulse position modulation, frame synchronization, 
 Summary | Full Text:PDF(240KB)
Design of UWB Pulses in Terms of B-Splines
Mitsuhiro MATSUO Masaru KAMADA Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/09/01
Vol. E88-A  No. 9  pp. 2287-2298
Type of Manuscript:  Special Section PAPER (Special Section on Ultra Wideband Systems)
Category: Pulse Shape
Keyword: 
UWB pulse design, soft-spectrum adaptation, B-splines, 
 Summary | Full Text:PDF(1.4MB)
Proposal of a Simple Synchronization Method for CSK/SS
Azumi ITO Hiromasa HABUCHI Fumie ONO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/06/01
Vol. E88-A  No. 6  pp. 1455-1461
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: 
Code Shift Keying, synchronization, Manchester-code, delay lock loop, tracking error, 
 Summary | Full Text:PDF(970.2KB)
A Reasonable Throughput Analysis of the CSK/SSMA Unslotted ALOHA System with Nonorthogonal Sequences
Nobuyoshi KOMURO Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/06/01
Vol. E88-A  No. 6  pp. 1462-1468
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: 
spread ALOHA system, code shift keying, nonorthogonal sequence, CLSP, 
 Summary | Full Text:PDF(851.9KB)
CSK/SSMA ALOHA System with Nonorthogonal Sequences
Nobuyoshi KOMURO Hiromasa HABUCHI Masaru KAMADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/10/01
Vol. E87-A  No. 10  pp. 2564-2570
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Spread Spectrum Thchnologies and Applications
Keyword: 
DS/SSMA ALOHA system, M-ary/SSMA ALOHA system, code shift keying, nonorthogonal sequence, throughput performance, 
 Summary | Full Text:PDF(1.3MB)
A New Modulation Technique Based on Pulse Position Modulation and Code Shift Keying
Fumie ONO Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/10/01
Vol. E86-A  No. 10  pp. 2483-2491
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Communication Systems
Keyword: 
spread-spectrum communications, spread spectrum pulse position modulation, pulse position modulation, code shift keying, time-hopping spread spectrum, 
 Summary | Full Text:PDF(1.4MB)
Bi-Orthogonal Modulation Systems Using Two Different Inner Sequences
Kouji OHUCHI Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12  pp. 2976-2982
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
bi-orthogonal modulation system, frame synchronization, inner sequence, code shift keying, spectral efficiency, 
 Summary | Full Text:PDF(624.2KB)
A Theoretical Analysis of the Synchronous SS-CSC/CDMA System
Kouji OHUCHI Hiromasa HABUCHI Toshio TAKEBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/11/25
Vol. E81-A  No. 11  pp. 2291-2297
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
synchronous code division multiple access system,  spread spectrum communication with constrained spreading code system,  synchronizing spreading sequence, 
 Summary | Full Text:PDF(517.4KB)
Performance Comparison of M-Ary/SSMA Systems and DS/SSMA Systems in the Presence of Frequency Selective Fading and Partial-Band Interference
Tsuyoshi ARAI Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/11/25
Vol. E81-A  No. 11  pp. 2319-2326
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
spread spectrum communication system, frequency selective fading, multicarrier transmission, M-ary/SSMA communication, 
 Summary | Full Text:PDF(603KB)
A Self-Synchronization Method for the SS-CSC System
Hiromasa HABUCHI Toshio TAKEBAYASHI Takaaki HASEGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/12/25
Vol. E80-A  No. 12  pp. 2398-2405
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
M-ary orthogonal system, bi-orthogonal system, self-synchronization, frame synchronization, differential detector, racing counters, 
 Summary | Full Text:PDF(577.6KB)
An Analysis of Frame Synchronization Systems with Racing Counters and Majority Rule for M-ary/SS Communication Systems
Kouji OHUCHI Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/12/25
Vol. E80-A  No. 12  pp. 2406-2412
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
M-ary spread spectrum communication system, M-ary/SSMA system, frame synchronization system, framing chips, racing counters, 
 Summary | Full Text:PDF(519.4KB)
FOREWORD
Ryuji KOHNO Kazuo TSUBOUCHI Peter JUNG Masakazu SENGOKU Tetsushi IKEGAMI Hisao TACHIKA Yukitsuna FURUYA Yoshiharu TOZAWA Takaaki HASEGAWA Shigenobu SASAKI Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/12/25
Vol. E79-A  No. 12  pp. 1927-1929
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(560.4KB)
Bit Error Rate of Bi-orthogonal Systems Considering Synchronization Performance
Hiromasa HABUCHI Shun HOSAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/12/25
Vol. E79-A  No. 12  pp. 1982-1987
Type of Manuscript:  Special Section PAPER (Special Secton on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
M-ary orthogonal system, Bi-orthogonal system, Code Shift Keying, canceller, bit error rate, tracking performance, 
 Summary | Full Text:PDF(436.8KB)
Synchronization Method Using Several Synchronizing Chips for M-ary/SS Communication System
Kouji OHUCHI Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/12/25
Vol. E79-A  No. 12  pp. 1988-1993
Type of Manuscript:  Special Section PAPER (Special Secton on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
spread spectrum communication system, M-ary/SS communication system, frame synchronization system, framing chips, racing counters, 
 Summary | Full Text:PDF(474.7KB)
Analysis of BER Performance of the Spread Spectrum Communication System with Constrained Spreading Code
Hiromasa HABUCHI Toshio TAKEBAYASHI Takaaki HASEGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/12/25
Vol. E79-A  No. 12  pp. 2078-2080
Type of Manuscript:  Special Section LETTER (Special Secton on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
spread spectrum communication, M-ary/SS system, bi-orthogonal system, 
 Summary | Full Text:PDF(189.5KB)
A Study on the M–ary/SS Communication System Using a Frame Synchronization Method of PCM Communication Systems
Kouji OHUCHI Hiromasa HABUCHI Takaaki HASEGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/11/25
Vol. E77-A  No. 11  pp. 1942-1945
Type of Manuscript:  Special Section LETTER (Special Section of Letters Selected from the 1994 IEICE Spring Conference)
Category: 
Keyword: 
spread spectrum communication system, M–ary/SS communication system, PCM communication system, frame synchronization method, Hadamard matrix, 
 Summary | Full Text:PDF(229.8KB)
Influence of Phase Difference between the Groups on BER Performance in the 2M-Plex System
Hiromasa HABUCHI Takaaki HASEGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/07/25
Vol. E76-B  No. 7  pp. 748-750
Type of Manuscript:  Special Section LETTER (Special Section of Letters Selected from the 1992 IEICE Fall Conference and the 1993 IEICE Spring Conference)
Category: 
Keyword: 
spread spectrum communication, code division multiplex, manchester code, communication systems and transmission equipment, 
 Summary | Full Text:PDF(184.2KB)