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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 37  /  [Next]  
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
RCS, SR, SRW
(Joint)
2024-03-15
13:00
Tokyo The University of Tokyo (Hongo Campus), and online
(Primary: On-site, Secondary: Online)
Low Complexity CSI Feedback Method Using Reformer
Yuki Saito, Tomoaki Ohtsuki (Keio Univ.) RCS2023-285
In Massive MIMO (Multiple-Input Multiple-Output), the feedback overhead of downlink channel state information (CSI) from... [more] RCS2023-285
pp.134-139
COMP 2023-12-22
10:00
Miyazaki Miyazaki Univ. Machinaka Campus Approximation Algorithms for Generalizations of Strong Connectivity Augmentation Problem
Ryoma Norose, Yutaro Yamaguchi (Osaka Univ.) COMP2023-16
A directed graph G is said to be strongly connected if there exists a directed path between any pair of vertices in G. S... [more] COMP2023-16
pp.1-5
EA, ASJ-H 2023-08-31
14:15
Miyagi   Acoustic test signals for measuring reverberant transfer function and its application to critical distance estimation
Hideki Kawahara (Wakayama Univ.), Kohei Yatabe (Tokyo Univ. Agri. Tech.), Ken-Ichi Sakakibara-Ichi (Health Sci. Univ. Hokkaido), Mitsunori Mizumachi (Kyushu Inst. Tech.), Tatsuya Kitamura (Konan Univ.) EA2023-20
We propose a dedicated test signal for acoustic measurement specifically for room acoustics based on our recent method. ... [more] EA2023-20
pp.14-17
CS 2023-07-27
09:47
Tokyo Hachijo-machi Chamber of Commerce and Industry Influence of Walsh-Hadmard codes Multiplied by pseudo-random sequences on Visible Light Communication Using an Event Camera
Daiki Ehara, Zhengqiang Tang (Nagoya Univ.), Masayuki Kinoshita (ChibaTech.), Takaya Yamazato, Hiraku Okada (Nagoya Univ.), Koji Kamakura (ChibaTech.), Shintaro Arai (Okayama Univ. of Sci.), Tomohiro Yendo (Nagaoka Univ. of Tech.), Toshiaki Fujii (Nagoya Univ.) CS2023-22
Visible light communication using an event camera in a receiver moving environment can transmit information by using Wal... [more] CS2023-22
pp.14-17
SP, IPSJ-MUS, IPSJ-SLP [detail] 2023-06-23
13:50
Tokyo
(Primary: On-site, Secondary: Online)
On phase function design of extended time-stretched pulse based on cascaded all-pass filters
Hideki Kawahara (Wakayama Univ.), Kohei Yatabe (Tokyo Univ. Agri. Tech.) SP2023-8
We propose a set of all-pass filter phase functions for designing extended Time-Stretched-Pulses which used a rationale ... [more] SP2023-8
pp.36-41
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, 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
VLD, HWS
(Joint)
2018-02-28
10:20
Okinawa Okinawa Seinen Kaikan k-Nearest Neighbor Search Hardware Using Locality Sensitive Hashing for High-Dimensional Data
Yuto Arai, Shin'ichi Wakabayashi, Shinobu Nagayama, Masato Inagi (Hiroshima City Univ.) VLD2017-91
Recently, k-nearest neighbor search is frequently used in the field of pattern recognition, clustering,etc.
However, f... [more]
VLD2017-91
pp.13-18
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
MW, EMCJ, EST, IEE-EMC [detail] 2017-10-20
16:00
Akita Yupopo Effect of Front-end Characteristics on Sidelobe of Pulse MIMO Radar Using Complex Sequence with Low Sidelobe Aperiodic Correlation
Takashi Shiba, Masato Watanabe, Manabu Akita, Takayuki Inaba (UEC) EMCJ2017-56 MW2017-108 EST2017-71
MIMO method of periodic pulse type radar using complex sequence with low sidelobe aperiodic correlation as 1st modulatio... [more] EMCJ2017-56 MW2017-108 EST2017-71
pp.161-166
SANE 2016-01-21
16:20
Nagasaki Nagasaki Prefectural Art Museum Multiplexing of Antenna Signal Using Perfect Periodic Code for PC-HPRF Radar.
Takashi Shiba, Masato Watanabe, Masahiro Ishii, Manabu Akita, Takayuki Inaba (UEC) SANE2015-91
MIMO (Multi Input Multi Output) methods of PC-HPRF(Phase Coded High Pulse Repetition Frequency) radar have been studied.... [more] SANE2015-91
pp.53-58
SANE 2015-10-30
16:00
Osaka OIT UMEKITA Knowledge Center Complex Sequence with Low Sidelobe Aperiodic Correlation for Code Division Multiple PC-HPRF Radar.
Takashi Shiba, Masato Watanabe, Masahiro Ishii, Manabu Akita, Takayuki Inaba (UEC) SANE2015-48
MIMO (Multi Input Multi Output) method of PC-HPRF(Phase Coded High Pulse Repetition Frequency) radar
have been studied.... [more]
SANE2015-48
pp.37-42
OCS 2015-07-30
11:25
Tokyo Tokyo Tech Front Experimental Demonstration and Evaluation of Signal Performance Improvement by Walsh-Hadamard Transform for Super-Channel beyond 100Gbps
Akira Masuda, Kohki Shibahara, Shingo Kawai, Mitsunori Fukutoku (NTT) OCS2015-29
Super-channel transmission is a promising technique to increase a channel capacity in next generation optical transport ... [more] OCS2015-29
pp.25-29
NS, IN
(Joint)
2014-03-07
14:50
Miyazaki Miyazaki Seagia Implementation and Evaluation of Selective Compressed Sensing for Micro-Controller
Haruki Kawakami, Yoshihiro Kawahara (The Univ. of Tokyo), Masami Kishiro, Shingo Nakamura, Takahiro Kudo (Fuji Electric), Tohru Asami (The Univ. of Tokyo) IN2013-197
Assuming the change in the eigenfrequency is used for the bridge
structure diagnosis by wireless accelerometers, we hav... [more]
IN2013-197
pp.315-320
ASN, MoNA
(Joint)
2014-01-24
15:50
Ehime Hotel Okudogo (Matsuyama) Selective Compressed Sensing Method for Low Power Highway Bridge Monitoring
Haruki Kawakami, Yoshihiro Kawahara (Univ. of Tokyo), Masami Kishiro, Takahiro Kudo (Fuji Electric), Tohru Asami (Univ. of Tokyo) ASN2013-159
Assuming the change in the eigenfrequency is used for the bridge
structure diagnosis by wireless accelerometers, two da... [more]
ASN2013-159
pp.231-236
SIP, CAS, MSS, VLD 2013-07-12
16:20
Kumamoto Kumamoto Univ. A Study on SIK Optical CDMA Communications Using Orthogonal Binary Sequence
Shinsuke Murakami, Akio Tsuneda (Kumamoto Univ.) CAS2013-35 VLD2013-45 SIP2013-65 MSS2013-35
The SIK (sequence inversion keyed) CDMA system has been proposed as one of optical CDMA (code division multiple access) ... [more] CAS2013-35 VLD2013-45 SIP2013-65 MSS2013-35
pp.195-199
SIP, RCS 2013-01-31
10:45
Hiroshima Viewport-Kure-Hotel (Kure) A study on a FPGA implementation of real time foreground segmentation
Tomohito Kajimoto, Ryo Yagi, Takao Nishitani (Tokyo Metropolitan Univ.) SIP2012-83 RCS2012-240
A prototype processor based on the multi-resolution GMM Foreground Segmentation algorithm by using Walsh Transform domai... [more] SIP2012-83 RCS2012-240
pp.13-18
AP, RCS
(Joint)
2012-11-16
09:30
Tokyo Tokyo Denki University An efficient channel estimation scheme without feedback in bi-directional two-timeslot OFDM relay systems
Yuta Koshimizu, Eiji Okamoto (Nagoya Inst. Tech.) RCS2012-172
In this paper, we propose an efficient channel estimation scheme without feedback from relay in bi-directional two-times... [more] RCS2012-172
pp.67-72
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