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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| CAS, CS | 2024-03-15 13:50 |
Okinawa | Carrier frequency offset estimation for initial acquisition in MWHCDM Masaki Kitagawa, Toshiharu Kojima (Univ of Electro-Communications)  CAS2023-133 CS2023-126 |
Modified Walsh-Hadamard code division multiplexing (MWHCDM) is suitable for helicopter satellite communications, where t... [more] | CAS2023-133 CS2023-126 pp.122-127 |
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| EA | 2023-05-25 14:00 |
Online | Online | Weighting functions to suppress artifacts due to cyclic convolution in acoustic measurements based on discrete Fourier transform Hideki Kawahara (Wakayama Univ.), Kohei Yatabe (Tokyo Univ. Agriculture Tech.), Mitsunori Mizumachi (Kyushu Inst. Tech.), Ken-Ichi Sakakibara (Health Science Univ. Hokkaido) EA2023-1 |
The Fast Fourier Transform (FFT) is a common practice in acoustic impulse response measurement and processing due to its... [more] | EA2023-1 pp.1-8 |
| IT, RCS, SIP | 2023-01-25 14:10 |
Gunma | Maebashi Terrsa (Primary: On-site, Secondary: Online) |
Cyclic Hadamard-type Matrices on Finite Fields and Their Properties Iori Kodama, Tetsuya Kojima (NIT, Tokyo College) IT2022-66 SIP2022-117 RCS2022-245 |
Hadamard matrix is defined as a square matrix where any components are −1 or +1, and where any pairs of rows are mutuall... [more] | IT2022-66 SIP2022-117 RCS2022-245 pp.211-216 |
| SIP, BioX, IE, MI, ITE-IST, ITE-ME [detail] | 2022-05-20 14:00 |
Kumamoto | Kumamoto University Kurokami Campus (Primary: On-site, Secondary: Online) |
Hadamard-Coded Supervised Discrete Hashing on Quaternion Domain Manabu Sueyasu (The Univ. Kitakyushu), Seisuke Kyochi (Kogakuin Univ.), Gou Koutaki (Kumamoto Univ.) SIP2022-23 BioX2022-23 IE2022-23 MI2022-23 |
This paper extends Hadamard-coded supervised discrete hashing on real domain (termed as $mathbb{R}$-HCSDH) using a real-... [more] | SIP2022-23 BioX2022-23 IE2022-23 MI2022-23 pp.117-122 |
| IT, ISEC, RCC, WBS | 2022-03-10 11:10 |
Online | Online | A Study on Initial Acquisition of WHCDM Signals with Roll-Off Pulse Shaping Ojiro Komatsu, Toshiharu Kojima (UEC) IT2021-96 ISEC2021-61 WBS2021-64 RCC2021-71 |
WHCDM (Walsh-Hadamard Code Division Multiplexing) is suitable for helicopter satellite communications, where rotor blade... [more] | IT2021-96 ISEC2021-61 WBS2021-64 RCC2021-71 pp.84-88 |
| IT, ISEC, RCC, WBS | 2022-03-10 11:35 |
Online | Online | An Initial Acquisition Scheme with Improved Carrier Frequency Offset Tolerance for MWHCDM Yota Yamamura, Toshiharu Kojima (UEC) IT2021-97 ISEC2021-62 WBS2021-65 RCC2021-72 |
MWHCDM (modified Walsh-Hadamard code division multiplexing) is suitable for helicopter satellite communications, where r... [more] | IT2021-97 ISEC2021-62 WBS2021-65 RCC2021-72 pp.89-94 |
| IT | 2019-09-06 13:00 |
Oita | Yufuin Kenshujo, Nippon Bunri University | [Invited Talk]
Hadamard-type Matrices on Finite Fields and Some Open Problems Tetsuya Kojima (NIT, Tokyo College) IT2019-31 |
Hadamard matrix is defined as a square matrix where any components are $-1$ or $+1$, and where any pairs of rows are mut... [more] | IT2019-31 pp.29-34 |
| IT, EMM | 2018-05-18 10:50 |
Tokyo | Ookayama Campus, Tokyo Institute of Technology | Hadamard-type Matrices on Finite Fields and Complete Complementary Codes Tetsuya Kojima (NIT, Tokyo College) IT2018-7 EMM2018-7 |
Hadamard matrix is defined as a square matrix where any components are $-1$ or $+1$, and where any pairs of rows are mut... [more] | IT2018-7 EMM2018-7 pp.35-40 |
| SAT, SANE (Joint) |
2018-02-22 12:30 |
Yamaguchi | The Yamaguchi Chamber of Commerce and Industry | A Simplified Initial Acquisition Scheme for WHCDM Based on Distribution Asymmetry of Demultiplexed Signal Energy Yuki Nagashima, Toshiharu Kojima (UEC) SAT2017-59 |
In helicopter satellite communications, the periodic channel blockage due to rotor blades is the most important problem ... [more] | SAT2017-59 pp.19-24 |
| SIP, IT, RCS | 2018-01-22 11:40 |
Kagawa | Sunport Hall Takamatsu | Hadamard-type Matrices on Finite Fields and Their Applications Tetsuya Kojima (NIT, Tokyo College) IT2017-62 SIP2017-70 RCS2017-276 |
Hadamard matrix is defined as a square matrix where any components are -1 or +1, and where any pairs of rows are mutuall... [more] | IT2017-62 SIP2017-70 RCS2017-276 pp.43-48 |
| SAT, WBS (Joint) |
2016-05-19 14:10 |
Aichi | Nagoya Institute of Technology | Performance evaluation of Digital CSK/CDM systems using Hadamard code with on-off signaling Fuminori Sato, Yusuke kozawa, Yohtaro Umeda (Tokyo Univ. of Science) WBS2016-4 |
In this paper, a digital CSK with CDM (DCSK/CDM) using Hadamard Code with on-off signaling is proposed to avoid the LED ... [more] | WBS2016-4 pp.17-22 |
| WBS, MICT (Joint) |
2013-07-09 13:00 |
Kochi | [Poster Presentation]
Proposal of a GMPSC based PN code for optical CSK Yusuke Takamaru, Hiromasa Habuchi (Ibaraki Univ.) WBS2013-16 |
Pseudo-noise(PN) codes used by code shift keying(CSK) for optical wireless communication with in-tensity-modulation and ... [more] | WBS2013-16 pp.17-20 |
|
| ITS, WBS (Joint) |
2012-11-27 10:25 |
Kumamoto | Kumamoto Univ. | Extension Method of Constant-Amplitude Signaling for Parallel Combinatory Multi-Code Transmission Tatsuya Ohta, Kouji Ohuchi (Shizuoka Univ.) WBS2012-45 |
In multi-code transmission using plural orthogonal codes, the amplitude of the transmission signal often exhibits a high... [more] | WBS2012-45 pp.51-56 |
| RCS | 2009-08-04 17:15 |
Miyagi | Tohoku Univ. | Application of Frequency-domain Block Signal Detection Using Iterative V-BLAST Detection and Walsh-Hadamard Precoding to Turbo-coded Single-carrier Transmission Tetsuya Yamamoto, Kazuki Takeda, Fumiyuki Adachi (Tohoku Univ.) RCS2009-109 |
In our recent paper, we proposed frequency-domain block signal detection combined with iterative Vertical-Bell Laborator... [more] | RCS2009-109 pp.183-188 |
| OCS | 2009-07-29 13:25 |
Shizuoka | Welcity Yugawara | Multi-phase orthogonal code based on Fourier matrix and its application to optical code division multiplexing Masanori Hanawa, Kenta Hosoya (Univ. of Yamanashi) OCS2009-20 |
Fourier code, a novel multi-phase orthogonal code for optical code division multiplexing (OCDM) / optical code division ... [more] | OCS2009-20 pp.7-12 |
| CAS, CS, SIP | 2009-03-02 13:10 |
Gifu | Nagaragawa Convention Center | On Asynchronous Multiple-Access Using Turbo-Hadamard Codes Daisuke Ishibashi, Takeshi Hashimoto (Univ. of Electro-Comm.) CAS2008-109 SIP2008-172 CS2008-83 |
Turbo-Hadamard codes allows a coding/decoding scheme that shows performance approaching channel capacity. Recently, a Mu... [more] | CAS2008-109 SIP2008-172 CS2008-83 pp.49-54 |
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