Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
SRW, SeMI, CNR (Joint) |
2020-11-27 11:30 |
Online |
Online |
[Invited Lecture]
Performance of Unlicensed Wireless Communication Systems under Multiple Periodic Burst Noise Environment Kenta Fujisawa, Shinichi Miyamoto (Wakayama Univ.) SRW2020-37 |
With the increase of the demands for next generation wireless communication service, an efficient use of unlicensed spec... [more] |
SRW2020-37 pp.55-60 |
EA, ASJ-H, ASJ-AA |
2018-07-25 13:40 |
Hokkaido |
Hokkaido Univ. |
Interference-free power spectral representations of periodic sounds and their application to VOCODERs Hideki Kawahara (Wakayama Univ.), Masanori Morise (Univ. Yamanashi), Kanru Hua (Univ. Illinois) EA2018-23 |
We propose a method to calculate the spectral envelope of voiced sounds for VOCODER applications. In our previous techni... [more] |
EA2018-23 pp.135-140 |
PRMU, SP |
2018-06-29 10:00 |
Nagano |
|
Revisiting interference-free power spectral representations of periodic signals Hideki Kawahara (Wakayama Univ.), Masanori Morise (Univ. Yamanashi), Kanru Hua (Univ. Illinois) PRMU2018-29 SP2018-9 |
We propose two algorithms to calculate interference-free power spectra of periodic signals. This set of algorithms is ou... [more] |
PRMU2018-29 SP2018-9 pp.41-46 |
MSS, NLP (Joint) |
2018-03-13 13:25 |
Osaka |
|
Investigation on 1/f Fourier power spectrum and nature of the data Tomomichi Nakamura (Univ. of Hyogo), Michael Small (Univ. of Western Australia), Toshihiro Tanizawa (Kochi National College of Tech.) NLP2017-106 |
We describe a problem with periodicity~(frequency) analysis by
the discrete Fourier transform~(DFT).
The DFT is the p... [more] |
NLP2017-106 pp.25-29 |
RCS |
2016-06-23 16:40 |
Okinawa |
Univ. of the Ryukyus |
[Invited Talk]
Studies on Receive Diversity and MIMO receivers based on the antenna with periodically variable antenna pattern Masato Saito (Ryukyu Univ.) RCS2016-74 |
In this talk, the author presents the studies conducted by the members of the author's laboratory on receive diversity a... [more] |
RCS2016-74 p.165 |
EMM, IT |
2015-05-22 14:45 |
Kyoto |
Kyoto International Community House |
[Invited Talk]
Complete Complementary Codes and Its Applications Tetsuya Kojima (NIT, Tokyo College) IT2015-16 EMM2015-16 |
It is important to find spread spectrum sequences that have auto correlation with a single sharp peak and no cross corre... [more] |
IT2015-16 EMM2015-16 pp.87-92 |
NLP |
2014-12-03 13:50 |
Tokyo |
Kyoto Univ. Tokyo Office |
Performance Analysis of Super Dense Multiple Access(SDMA) Communications Systems Using Almost Periodic Function Codes Tomoya Naohara, Ken Umeno (Kyoto Univ.) NLP2014-101 |
We propose a new communications system that is different from what is using PN codes or chaotic codes. It is based on th... [more] |
NLP2014-101 pp.11-16 |
SP, ASJ-H |
2014-10-24 09:00 |
Wakayama |
Nanki Shirahama Onsen Hotel Seamore |
[Invited Talk]
Speech processing based on static representations of periodic signals Hideki Kawahara (Wakayama Univ.) |
Locally periodic signals, such as voiced sounds and sounds of musical instruments, play important roles in our everyday ... [more] |
SP2014-87 pp.65-70 |
CAS, SIP, MSS, VLD, SIS [detail] |
2014-07-09 09:30 |
Hokkaido |
Hokkaido University |
A study on footstep detection in outdoor environment Shota Tanaka, Akitoshi Itai (Chubu Univ.), Hiroshi Yasukawa (Aichi Prefectural Univ.) CAS2014-1 VLD2014-10 SIP2014-22 MSS2014-1 SIS2014-1 |
It is known that a footstep is useful tool to estimate a human state. Various surveillance systems using footstep are pr... [more] |
CAS2014-1 VLD2014-10 SIP2014-22 MSS2014-1 SIS2014-1 pp.1-5 |
CAS, SIP, MSS, VLD, SIS [detail] |
2014-07-10 09:30 |
Hokkaido |
Hokkaido University |
Temporally static representation of group delay for periodic signals Hideki Kawahara (Wakayama Univ.) CAS2014-21 VLD2014-30 SIP2014-42 MSS2014-21 SIS2014-21 |
Short term Fourier transform of periodic signals introduce periodic temporal variations in their Frequency domain repres... [more] |
CAS2014-21 VLD2014-30 SIP2014-42 MSS2014-21 SIS2014-21 pp.105-110 |
OPE, LQE, OCS |
2012-10-25 11:15 |
Miyazaki |
|
Laminated Polarizer With an Anti-Reflection Structure Using a Subwavelength Grating Junji Yamauchi, Kazuya Yamahira, Yuu Wakabayashi, Hisamatsu Nakano (Hosei Univ.) OCS2012-46 OPE2012-97 LQE2012-63 |
An anti-reflection (AR) structure using a subwavelength grating (SWG) is analyzed by
the finite-difference time-domain... [more] |
OCS2012-46 OPE2012-97 LQE2012-63 pp.31-36 |
EA |
2012-07-19 13:30 |
Hokkaido |
Health Sci. Univ. of Hokkaido |
A stable representation of group delay for periodic signals Hideki Kawahara (Wakayama Univ.), Masanori Morise (Ritsumei. Univ.), Ryuichi Nisimura, Toshio Irino (Wakayama Univ.) EA2012-45 |
Instantaneous frequency and group delay, which are defined as the temporal derivative and the frequency derivative of ph... [more] |
EA2012-45 pp.1-6 |
EMT, PN, LQE, OPE, MWP, EST, IEE-EMT [detail] |
2012-01-26 09:30 |
Osaka |
Osaka Univ. Convention Center |
Analysis in Doubly Periodic Scattering System Taishi Okita (Toyota Central R&D Labs., Inc.) PN2011-44 OPE2011-160 LQE2011-146 EST2011-94 MWP2011-62 |
We analytically study scattering problems on the basis of the mode expansion theory, when the metal screen perforated pe... [more] |
PN2011-44 OPE2011-160 LQE2011-146 EST2011-94 MWP2011-62 pp.79-84 |
OFT, OPE |
2011-03-04 09:35 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Reflection Characteristics of Broadband Mirrors Using a Subwavelength Grating Yuu Wakabayashi, Shunsuke Kimura, Junji Yamauchi, Hisamatsu Nakano (Hosei Univ.) OFT2010-64 OPE2010-168 |
Broadband mirrors using a subwavelength grating (SWG) are analyzed by the finite-difference time-domain method with the ... [more] |
OFT2010-64 OPE2010-168 pp.7-12 |
CAS |
2011-01-26 09:25 |
Kumamoto |
Kumamoto University |
Aperiodic Correlation Properties of Pseudorandom Binary Sequences as Unipolar Codes
-- Comparison of NFSR Orthogonal Sequences and Gold Sequences -- Shintaro Matsuo, Akio Tsuneda (Kumamoto Univ.) CAS2010-96 |
In asynchronous DS/CDMA communications and positioning systems based on spread-spectrum codes, aperiodic correlation fun... [more] |
CAS2010-96 pp.67-70 |
SP |
2010-11-18 17:00 |
Aichi |
Aichi Prefectural Univ. |
Temporally static representation of phase related quantity for periodic signals Hideki Kawahara (Wakayama Univ.), Masanori Morise (Ritsumeikan Univ.), Toshio Irino (Wakayama Univ.) SP2010-77 |
An averaged power spectrum, which is calculated from two power spectra using two time windows a half pitch-period apart,... [more] |
SP2010-77 pp.47-51 |
SP, NLC |
2008-12-10 16:10 |
Tokyo |
Waseda Univ. |
Parameter optimization for a fundamental frequency extractor based on TANDEM-STRAIGHT Hanae Itagaki, Masanori Morise, Ryuichi Nisimura, Toshio Irino, Hideki Kawahara (Wakayama Univ.) NLC2008-50 SP2008-105 |
Abstract A fundamental frequency extractor based on a temporally stable power spectral representation for peri-odic sign... [more] |
NLC2008-50 SP2008-105 pp.155-160 |
WBS |
2008-10-10 09:00 |
Yamaguchi |
Yamaguchi Univ. |
[Poster Presentation]
Properties of Multi-Dimensional Even-Shift Orthogonal Sequences Yukari Tsuchiyama, Takahiro Matsumoto, Shinya Matsufuji (Yamaguchi Univ.) WBS2008-40 |
The even-shift orthogonal sequence (E-sequence) is a sequence, whose aperiodic auto-correlation function takes zero at a... [more] |
WBS2008-40 pp.59-62 |
WBS |
2007-10-15 16:10 |
Hiroshima |
|
Construction of multi-dimensional even-shift orthogonal sequences Yukari Tsuchiyama, Takahiro Matsumoto, Shinya Matsufuji (Yamaguchi Univ.) WBS2007-38 |
The even-shift orthogonal sequence(E-sequence) is a binary sequence whose out-of-phase aperiodic auto-correlation functi... [more] |
WBS2007-38 pp.33-37 |
SP |
|
Toyama |
Toyama Prefectural University |
A temporal and frequency interference-free power spectral representation of periodic signals
-- Toward STRAIGHT spectral estimation without tunable component -- Hideki Kawahara, Masanori Morise, Toru Takahashi, Ryuichi Nisimura, Toshio Irino (Wakayama Univ.), Hideki Banno (Meijo Univ.) SP2007-26 |
A new spectral estimation procedure which does not have interferences due to periodicity both in the time and the freque... [more] |
SP2007-26 pp.13-18 |