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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 28  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
ISEC, WBS, IT 2017-03-09
16:15
Tokyo TOKAI University Different Orthogonal Code DS/CDMA with High Spectral Efficiency and Evaluations by Interference Cancellation Using Indoor Radio Wave Intensity Distriburtion
Hirofumi Nakajo, Shin'ichi Tachikawa (NIT, Nagaoka) IT2016-116 ISEC2016-106 WBS2016-92
High data rate and high spectral efficiency more than LTE can be obtained by different orthogonal codes DS/CDMA communic... [more] IT2016-116 ISEC2016-106 WBS2016-92
pp.109-113
RCS, SR, SRW
(Joint)
2015-03-04
15:00
Tokyo Tokyo Institute of Technology On Interference Cancellation for High Data Rate Orthogonal Code DS/CDMA Communication System
Shouhei Toda, Shin'ichi Tachikawa (NNCT) RCS2014-319
In this paper, we devise interference cancellation to improve the performance of high data rate orthogonal code DS/CDMA ... [more] RCS2014-319
pp.107-110
RCS, AN, MoNA, SR
(Joint)
2009-03-05
09:00
Kanagawa YRP Improvements of MC-CDMA Communication Systems Using Code-Diversity Techniques
Shinji Aoki, Shin'ichi Tachikawa (Nagaoka Univ. of Tech.) RCS2008-232
In this paper, we present improvements of MC-CDMA code-diversity communication systems by using a novel weight coefficie... [more] RCS2008-232
pp.119-124
WBS, ITS
(Joint)
2008-12-11
13:00
Tokyo Kikai-Shinko-Kaikan Bldg. Proposal of synchronous acquisition method in OFDM/MC-CDMA
Koji Yokoyama, Shin'ichi Tachikawa (Nagaoka University of Technology) WBS2008-46
This paper proposes a novel synchronous acquisition method in asynchronous Orthogonal Frequency Division Multiplexing/Mu... [more] WBS2008-46
pp.1-6
WBS, ITS
(Joint)
2008-12-11
13:25
Tokyo Kikai-Shinko-Kaikan Bldg. On Code-Diversity and Partial Correlation Weight Coefficient Control Techniques in DS/CDMA
Shiki Suzuki, Shin'ichi Tachikawa (Nagaoka University of Technology) WBS2008-47
This paper presents code-diversity and partial correlation weight coefficient control techniques to suppress multiple ac... [more] WBS2008-47
pp.7-12
WBS, ITS
(Joint)
2008-12-11
13:50
Tokyo Kikai-Shinko-Kaikan Bldg. An Extending of MMFSK-EOD Systems Using Binary Hopping Patterns
Suguru Hasegawa, Shin'ichi Tachikawa, Gen Marubayashi (Nagaoka Univ. of Tec.) WBS2008-48
By using two kinds hopping patterns, MMFSK systems using even-odd discrimination method (MMFSK-EOD) require demodulation... [more] WBS2008-48
pp.13-18
SAT, WBS
(Joint)
2008-05-27
16:15
Chiba Nihon Univ. (Tsudanuma) Characteristics of MC-CDMA Code-Diversity Communication Systems
Shinji Aoki, Shin'ichi Tachikawa (Nagaoka Univ. of Tech.) WBS2008-3
In this paper, we present characteristics of a novel MC-CDMA code-diversity communication systems by using several eleme... [more] WBS2008-3
pp.13-18
WBS 2007-12-18
14:30
Tokyo   Studies on Error Performances of MMFSK-EOD Systems
Suguru Hasegawa, Shin'ichi Tachikawa, Gen Marubayashi (Nagaoka Univ of Tech.) WBS2007-53
 [more] WBS2007-53
pp.35-39
WBS 2007-10-16
08:40
Hiroshima   Bit-Error Rate Characteristics of DFT-Based Continuous-Phase MFSK
Ryuji Hayashi, Keiichirou Tsuyuki, Masanori Hamamura (Kochi Univ. of Tech.), Shin'ichi Tachikawa (Nagaoka Univ. of Tech.) WBS2007-39
This paper describes DFT-based continuous-phase M-ary frequency shift keying (CP-MFSK) using continuous-phase modulation... [more] WBS2007-39
pp.1-6
WBS, SIP 2007-08-06
14:15
Kochi Green Hall (2nd fl.), Kochi Green-Kaikan Comparison of Radiation Power from MMFSK systems and OFDM systems
Suguru Hasegawa, Shin'ichi Tachikawa (Nagaoka Univ. of Tech.), Gen Marubayashi (Prof. Emeritus,Nagaoka Univ. of Tech.) SIP2007-67 WBS2007-16
To compare the radiation power from OFDM and MMFSK powerline system, error rate performance of MMFSK system which uses E... [more] SIP2007-67 WBS2007-16
pp.19-24
WBS, SIP 2007-08-07
13:10
Kochi Green Hall (2nd fl.), Kochi Green-Kaikan Improvement for Auto-Correlation Property of PN Sequence Using DS/SS Code-Diversity Reception
Yutaka Ueda, Shin'ichi Tachikawa (Nagaoka Univ of Tech) SIP2007-79 WBS2007-28
(To be available after the conference date) [more] SIP2007-79 WBS2007-28
pp.43-48
IT, ISEC, WBS 2007-03-15
10:45
Gunma Gunma Univ. (Kiryu Campus) On Adaptive Equalization for Direct Sequence-Ultra Wideband System
Keat Beng Toh, Masatoshi Yokota, Shin'ichi Tachikawa (Nagaoka Univ. of Tech.)
In this paper, a combination of adaptive equalizer and Least Mean Square-RAKE (LMS-RAKE) combining scheme receiver syste... [more] IT2006-62 ISEC2006-117 WBS2006-59
pp.13-18
IT, ISEC, WBS 2007-03-16
10:20
Gunma Gunma Univ. (Kiryu Campus) On performances of M-ary/OFDM communication system
Hideyuki Murata, Shin'ichi Tachikawa (Nagaoka Univ. of Tech.)
 [more] IT2006-85 ISEC2006-140 WBS2006-82
pp.1-6
IT, ISEC, WBS 2007-03-16
11:10
Gunma Gunma Univ. (Kiryu Campus) On Noncoherent FH Pattern Likelihood Ratio Decision Methods
Takuma Maeda, Shin'ichi Tachikawa (Nagaoka Univ of Tech)
In this paper, we show noncoherent iterative likelihood ratio decision (iterative LRD) method and noncoherent lump likel... [more] IT2006-87 ISEC2006-142 WBS2006-84
pp.11-16
WBS 2006-10-27
10:20
Miyagi Akiu Resort Hotel Crescent (Sendai) Spectral Efficiency and BER Performances for a MMFSK System Using Even-Odd Discrimination Method
Yoshimasa Nojiri (Nagaoka Univ. of Tech.), Gen Marubayashi (Prof.Emeritus, Nagaoka Univ. of Tech.), Shin'ichi Tachikawa (Nagaoka Univ. of Tech.)
 [more] WBS2006-32
pp.13-18
SIP, WBS 2006-07-20
15:45
Niigata Nagaoka Univ. of Tech. Characteristics of DS/CDMA Code-Diversity Using Adaptive Weight Control
Masayuki Takekawa, Shin'ichi Tachikawa (Nagaoka Univ. of Tech.)
 [more] SIP2006-50 WBS2006-14
pp.35-42
SIP, WBS 2006-07-20
16:10
Niigata Nagaoka Univ. of Tech. Improvements of Multi Carrier-Frequency Interleaved Direct Sequence / Code Division Multiple Access (MC-FDS/CDMA)
Hiroshi Komori, Shin'ichi Tachikawa (Nagaoka Univ. of Tech)
 [more] SIP2006-51 WBS2006-15
pp.43-48
WBS 2005-12-15
11:20
Tokyo Kikai-Shinko-Kaikan Bldg. On a Performance of UWB/CDMA Adaptive Array Antenna System in a Multi-Path Fading Environment
Naotoshi Itoh, Shin'ichi Tachikawa (Nagaoka Univ.of Tech.)
In this paper, we show array antenna performances for UWB/CDMA in a multi-path fading environment.
And we propose a sys... [more]
WBS2005-49
pp.13-18
WBS 2005-12-15
14:45
Tokyo Kikai-Shinko-Kaikan Bldg. Performances of Multi Carrier-Frequency Interleaved Direct Sequence / Code Division Multiple Access (MC-FDS/CDMA)
Hiroshi Komori, Shin'ichi Tachikawa (Nagaoka Univ. of Tech.)
This paper presents BER performances of MC-DS/CDMA system using a
stepped frequency interleaver (abbreviated as MC-FD... [more]
WBS2005-53
pp.37-42
WBS 2005-12-15
15:10
Tokyo Kikai-Shinko-Kaikan Bldg. On a FH Pattern Likelihood Ratio Decision Method against CW Jamming or Burst Noise
Kenji Kobayashi, Shin'ichi Tachikawa (Nagaoka Univ. of Tech.)
This paper proposes a improvement method of a lump likelihood ratio calculation in detection of frequency hopping patter... [more] WBS2005-54
pp.43-48
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