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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 43  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
WBS, IT, ISEC 2021-03-04
09:50
Online Online Variable spreading factor codes for optical code-division multiple access
Kyohei Ono, Shoichiro Yamasaki, Tomoko K. Matsushima (Polytechnic Univ.) IT2020-113 ISEC2020-43 WBS2020-32
In this study, we propose variable spreading factor codes based on generalized modified prime sequence codes (GMPSCs), w... [more] IT2020-113 ISEC2020-43 WBS2020-32
pp.7-12
IT 2020-12-03
14:50
Online Online A Study on Signature Codes for Synchronous Optical CDMA Systems -- Proposal of Shortened Codes Based on Generalized Modified Prime Sequence Codes --
Kyohei Ono, Shoichiro Yamasaki, Tomoko K. Matsushima (Polytechnic Univ.) IT2020-57
In this paper, we propose a class of new spreading codes for synchronous optical CDMA and introduce a construction metho... [more] IT2020-57
pp.177-182
IT, EMM 2020-05-29
11:20
Online Online A Study on Code Construction Method for Optical CDMA with Variable Spreading Factor
Shoichiro Yamasaki, Tomoko K. Matsushima, Kyohei Ono (Polytechnic Univ.) IT2020-9 EMM2020-9
This study proposes variable spreading factor codes for optical synchronous code division
multiple access (CDMA) which... [more]
IT2020-9 EMM2020-9
pp.49-54
IT, SIP, RCS 2020-01-24
09:55
Hiroshima Hiroshima City Youth Center A Study on Construction Method of Orthogonal Variable-Length Spreading Sequences over Finite Fields
Shoichiro Yamasaki, Tomoko K. Matsushima (Polytechnic University) IT2019-66 SIP2019-79 RCS2019-296
Orthogonal spreading codes have been applied to multiple access for communication systems.
Tree structured orthogonal ... [more]
IT2019-66 SIP2019-79 RCS2019-296
pp.173-178
WBS
(2nd)
2019-12-17
- 2019-12-18
Aichi Hotel Kinsenkaku Study on Spreading Codes with Negative Auto-Correlation for SIK Optical CDMA Communications
Akio Tsuneda (Kumamoto Univ.)
The SIK (sequence inversion keyed) CDMA (code division multiple access) system was proposed as one of optical CDMA commu... [more]
CAS, CS 2019-03-09
11:15
Kanagawa Shonan Institute of Technology On Polyphase Sequence Sets with Low Correlation Properties
Yuhei Ohashi, Sho Kuroda, Yuta Ida, Takahiro Matsumoto, Shinya Matsufuji (Yamaguchi Univ.) CAS2018-150 CS2018-118
In recent years, Zadoff-Chu sequence which is a polyphase sequence set has been used as synchronization sequences and s... [more] CAS2018-150 CS2018-118
pp.65-70
EMM 2017-01-30
16:15
Miyagi Tohoku University (Miyagi) On Some Variations of Information Hiding Strategies Based on Complete Complementary Codes
Tetsuya Kojima (NIT, Tokyo College) EMM2016-79
Complete complementary code (CCC) is a spread spectrum sequence family with good correlation properties. Information hid... [more] EMM2016-79
pp.31-36
WBS, RCC, ITS 2016-12-01
13:00
Kagawa Sunport Hall Takamatsu [Poster Presentation] Performance evaluation of DS/SS-IVC Scheme based on Location Oriented Allocation Scheme Using Hadamard Code
Kazuki Kobayashi, Reiki Kusakari, Akira Nakamura (Tokyo Univ. of Science), Kohei Ohno (Meiji Univ.), Makoto Itami (Tokyo Univ. of Science) WBS2016-50 ITS2016-17 RCC2016-39
This paper discusses a DS/SS-IVC (Direct Sequence/Spreads Spectrum-Inter Vehicle Communication) scheme based on location... [more] WBS2016-50 ITS2016-17 RCC2016-39
pp.13-18
CCS 2015-11-10
15:25
Kyoto Inamori Foundation Memorial Building, Kyoto Univ. Optimal CDMA Systems with Heterogeneous Autocorrelations of Constant Power Spreading Sequence -- Theory and its Performance Evaluation --
Hirofumi Tsuda, Ken Umeno (Kyoto Univ.) CCS2015-64
Recently, the new spreading sequence obtained by Weyl sequence is proposed. Its crosscorrelation function follows O(1/N)... [more] CCS2015-64
pp.103-108
WBS, MICT 2015-07-22
11:50
Nara Nara Institute of Science and Technology On a bent type ZCZ code and its application to CDMA
Shinya Matsufuji (Yamaguchi Univ.), Takafumi Hayashi (Univ. of Aizu), Sho Kuroda (FX Systems), Yuta Ida, Takahiro Matsumoto (Yamaguchi Univ.) WBS2015-26 MICT2015-30
This paper defines a set of sequences with a zero correlation zone, that their Fourier transform over GF(p) of correspon... [more] WBS2015-26 MICT2015-30
pp.69-74
NLP, CCS 2015-06-11
15:30
Tokyo Waseda Univerisity Applicability and characteristics to satellite communications with power constant chaotic spreading sequence
Isao Nakazawa, Ken Umeno (Kyoto Univ.) NLP2015-51 CCS2015-13
On explosion of Telecommunications and the Big Data, super-multi access satellite sensor network and high-speed satellit... [more] NLP2015-51 CCS2015-13
pp.73-78
ISEC, IT, WBS 2015-03-02
17:05
Fukuoka The University of Kitakyushu On Block Spreading ZCZ-CDMA for High-Speed Transmission
Sho Kuroda (FX Systems), Kazuhiro Kobayashi, Yuta Ida, Takahiro Matsumoto, Shinya Matsufuji (Yamaguchi Univ.) IT2014-89 ISEC2014-102 WBS2014-81
ZCZ-CDMA with a block spreading technique (BC-ZCZ-CDMA), that a data block is decoded by using a spreading sequence with... [more] IT2014-89 ISEC2014-102 WBS2014-81
pp.173-178
RCC, ASN, NS, RCS, SR
(Joint)
2014-07-30
13:30
Kyoto Kyoto Terrsa Joint Frequency-Domain Equalization and De-spreading Based on Belief Propagation for Multi-Code Direct Sequence Spread Spectrum Transmission
Hiroyuki Miyazaki, Fumiyuki Adachi (Tohoku Univ.) RCS2014-89
Multi-code direct sequence spread spectrum (DSSS) transmission suffers from residual inter-code interference (ICI) after... [more] RCS2014-89
pp.1-6
RCS, NS
(Joint)
2013-12-19
09:00
Kagawa Sunport Hall Takamatsu A Study on Optimization of Reciever Filter of Nallowband DS-CDM Transmission System
Naoki Oyama, Makoto Taromaru (Fukuoka Univ.) RCS2013-223
Even when using spread spectrum (SS) modulation for a radio communication system, we have take into account the occupied... [more] RCS2013-223
pp.101-105
CAS 2013-01-29
14:55
Oita Beppu International Convention Center Performance Evaluation of Spreading Codes with Negative Auto-Correlation Based on Gold Sequences and Chaos Theory -- BER in Asynchronous DS/CDMA Communications under AWGN Environment --
Satoshi Abe, Akio Tsuneda (Kumamoto Univ.) CAS2012-87
In asynchronous DS/CDMA communications, spreading codes with appropriate negative auto-correlation can reduce bit error ... [more] CAS2012-87
pp.121-124
IT 2012-07-19
15:05
Aichi Toyota Technological Institute Modification of Gold sequences for Optical CDM
Satoru Aoyama, Shogo Usami (Meijo Univ.) IT2012-12
One of multiplexing scheme for optical communication is Optical Code Division Multiplexing (O-CDM).
In O-CDM, there a... [more]
IT2012-12
pp.19-23
NLP 2011-05-26
14:15
Kagawa Olive park olive memorial hall An Analysis of a High-Order Delay-Locked Loop in the Presence of White Channel Noise and Nonwhite Multiple Access Interference
Keisuke Nagata, Hisato Fujisaka, Takeshi Kamio, Kazuhisa Haeiwa (Hiroshima City Univ.) NLP2011-4
This manuscript reports a procedure and results of probabilistic analysis of non-coherent delay-locked loop (NC-DLL) use... [more] NLP2011-4
pp.15-20
ISEC, IT, WBS 2011-03-04
11:15
Osaka Osaka University Performance evaluation of MC-CDMA system which permits time and frequency offsets
Tatsuma Kuwazaki, Tohru Kohda, Yutaka Jitsumatsu (Kyushu Univ.) IT2010-109 ISEC2010-113 WBS2010-88
In code division multiple access (CDMA) systems, spreading code is introduced as the third axis in addition
to the time... [more]
IT2010-109 ISEC2010-113 WBS2010-88
pp.271-276
NS, RCS
(Joint)
2010-12-17
13:40
Okayama Okayama Univ. Investigations on Channel-Dependent Adaptive Spreading Code Selection in Downlink MC-CDMA with MMSE-SIC Receiver
Akira Wakamiya, Shota Yoshimura, Kenichi Higuchi (Tokyo Univ. of Science) RCS2010-191
This paper investigates the received signal-to-noise and interference power ratio (SINR) of the proposed channel-depende... [more] RCS2010-191
pp.191-196
NLP 2010-12-13
11:00
Tottori Yonago Convention Center An All-Coupled Probabilistic Network Model of Delay-Locked Loops
Keisuke Nagata, Hisato Fujisaka, Takeshi Kamio, Kazuhisa Haeiwa (Hiroshima City Univ.) NLP2010-115
In this paper, we build a probabilistic 2J+1-site network which is a model of a delay-locked loop (DLL) in a CDMA commun... [more] NLP2010-115
pp.21-26
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