MIYANAGA Yoshikazu

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Name
MIYANAGA Yoshikazu
URL
http://csw.ist.hokudai.ac.jp/
Affiliation
Hokkaido University
Section
Graduate School of Information Science and Technology, Division of Media and Network Technologies, Information Communication Systems
Job title
Professor

Profile

He received the B.S., M.S., and Dr. Eng. degrees from Hokkaido University, Sapporo, Japan, in 1979, 1981, and 1986, respectively. Since 1983 he has been with Hokkaido University. He is now Professor at Division of Information Communication Systems in Graduate School of Information Science and Technology, Hokkaido University. From 1984 to 1985, he was a visiting researcher at Department of Computer Science, University of Illinois, USA.

His research interests are in the areas of speech signal processing, wireless communication signal processing and low-power consumption VLSI system design. He has published 3 books, over 140 Transaction/Journal papers, and more than 250 International Conference/Symposium/Workshop papers.

Dr. Miyanaga served as an associate editor of IEICE Transactions on Fundamentals of Electronics, Communications and Computer Science from 1996 to 1999, editors of IEICE Transactions on Fundamentals, Special Issues. He is an associate editor of IEEE CAS Society Transaction on Circuits and Systems II (2012-present), and also an associate editor of Journal of Signal Processing, RISP Japan (2005-present).

He was a delegate of IEICE, Engineering Sciences Society Steering Committee, i.e., IEICE ESS Officers from 2004 to 2006. He was a chair of Technical Group on Smart Info-Media System, IEICE (IEICE TG-SIS) during the same period and now a member of the advisory committee, IEICE TG-SIS. He is now vice-President, IEICE Engineering Science (ES) Society. He is Fellow member of IEICE.

He is also vice-President, Asia-Pacific Signal and Information Processing Association (APSIPA) from 2009 to 2011. The APSIPA is a new association established in Hong Kong since 2008 and it promotes all aspects of research and education on signal processing, information technology, and communications.

He served as a member in the board of directors, IEEE Japan Council as a chair of student activity committee from 2002 to 2004. He was a chair of student activity committee in IEEE Sapporo Section (1998-2006) and is a chair of member development (2007-present).

He was a secretary of IEEE Circuits and Systems Society, Technical Committee on Digital Signal Processing (IEEE CASS DSP TC) (2004-2006) and was its chair (2006-2008). He was a distinguished lecture (DL) of IEEE CAS Society (2010-2011) and he is now a Board of Governor (BoG) of IEEE CAS Society (2011-present).

He has been serving as a chair of international steering committee, IEEE ISPACS (2005-2007), and IEEE ISCIT (2006-2011). He is also an international steering committee member of IEEE ICME, IEEE/EURASIP NSIP, IEICE SISA et. al. He was an honorary chair and general chair/co-chairs of international symposiums/workshops, i.e., ISCIT 2005, NSIP 2005, ISCIT 2006, SISB 2007, ISPACS 2008, ISMAC 2009, ISMAC2010, APSIPA ASC 2009, IEICE ITC-CSCC 2011, APSIPA ASC 2011, IEEE ISCIT 2012, ISMAC 2011, ISPACS2011 and so on.

Research Areas

 
 

Committee Memberships

 
2003
   
 
IEEE  CAS Society DSP TC Member
 
2004
 - 
2005
IEEE  CAS Society DST TC Secretary
 
2005
 - 
2007
IEEE  CAS Society DSP TC Chair
 
2009
   
 
IEEE  Board of Governor, IEEE Circuits and Systems Society
 
2009
 - 
2011
IEEE  Distinguished Lecture
 

Awards & Honors

 
2006
Best Paper Award, IEEE International Symposium on Communications and Information Technology
 
2011
Best Paper Award, Journal of Signal Processing
 

Published Papers

 
Kasauka Dabwitso, Sugiyama Kenta, Tsutsui Hiroshi, Okuhata Hiroyuki, Miyanaga Yoshikazu
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES   E102A(6) 775-782   Jun 2019   [Refereed]
Maung Htoo Maung, Aramvith Supavadee, Miyanaga Yoshikazu
ELECTRONICS   8(3)    Mar 2019   [Refereed]
Ei Ei Tun,Supavadee Aramvith,Yoshikazu Miyanaga
IEEE Access   7 68010-68021   2019   [Refereed]
An Evaluation of Keyword Detection Using ACF of Pitch for Robust Speech Recognition
2018 18TH INTERNATIONAL SYMPOSIUM ON COMMUNICATIONS AND INFORMATION TECHNOLOGIES (ISCIT)   96-100   2018   [Refereed]
Development of Real-time FHD Loss-Less Video Communication over an 8x8 MIMO-OFDM System
2018 ASIA-PACIFIC SIGNAL AND INFORMATION PROCESSING ASSOCIATION ANNUAL SUMMIT AND CONFERENCE (APSIPA ASC)   1087-1090   2018   [Refereed]
Alameen Najjar,Shun'ichi Kaneko,Yoshikazu Miyanaga
CoRR   abs/1812.06764    2018   [Refereed]
Yoshikazu Miyanaga,Junji Yamano,Masaki Miura,Tohru Gotoh,Takashi Imagawa,Hiroshi Tsutsui
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2018, Honolulu, HI, USA, November 12-15, 2018   1087-1090   2018   [Refereed]
Yoshikazu Miyanaga,Hiroshi Tsutsui,Takashi Imagawa
17th International Symposium on Communications and Information Technologies, ISCIT 2017, Cairns, Australia, September 25-27, 2017   1-5   2017   [Refereed]
Htoo Maung Maung,Supavadee Aramvith,Yoshikazu Miyanaga
IEEE International Conference on Consumer Electronics, ICCE 2017, Las Vegas, NV, USA, January 8-10, 2017   374-375   2017   [Refereed]
Alia Asheralieva,Yoshikazu Miyanaga
IEEE Trans. Vehicular Technology   66(6) 5284-5300   2017   [Refereed]
Alameen Najjar,Shun'ichi Kaneko,Yoshikazu Miyanaga
Proceedings of the Thirty-First AAAI Conference on Artificial Intelligence, February 4-9, 2017, San Francisco, California, USA.   4524-4530   2017   [Refereed]
Alia Asheralieva,Yoshikazu Miyanaga
Computer Networks   108 1-14   2016   [Refereed]
Array,Array
Mobile Information Systems   2016 4565203:1-4565203:18   2016   [Refereed]
Alia Asheralieva,Yoshikazu Miyanaga
Mobile Information Systems   2016 6306580:1-6306580:23   2016   [Refereed]
Alia Asheralieva,Yoshikazu Miyanaga
IEEE Trans. Communications   64(3) 1342-1355   2016   [Refereed]
Array,Yoshikazu Miyanaga
IEEE Trans. Communications   64(9) 3996-4012   2016   [Refereed]
Alia Asheralieva,Yoshikazu Miyanaga
IEEE Trans. Vehicular Technology   65(12) 9787-9800   2016   [Refereed]
Dabwitso Kasauka,Hiroshi Tsutsui,Seijiro Imai,Takashi Imagawa,Hiroyuki Okuhata,Yoshikazu Miyanaga
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2016, Jeju, South Korea, December 13-16, 2016   1-5   2016   [Refereed]
Htoo Maung Maung,Supavadee Aramvith,Yoshikazu Miyanaga
2016 IEEE International Conference on Digital Signal Processing, DSP 2016, Beijing, China, October 16-18, 2016   286-290   2016   [Refereed]
Alia Asheralieva,Yoshikazu Miyanaga
International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2016, Phuket, Thailand, October 24-27, 2016   1-6   2016   [Refereed]
Seijiro Imai,Dabwitso Kasauka,Hiroshi Tsutsui,Takashi Imagawa,Hiroyuki Okuhata,Yoshikazu Miyanaga
International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2016, Phuket, Thailand, October 24-27, 2016   1-4   2016   [Refereed]
Dabwitso Kasauka,Hiroshi Tsutsui,Hiroyuki Okuhata,Takashi Imagawa,Yoshikazu Miyanaga
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2015, Hong Kong, December 16-19, 2015   779-783   2015   [Refereed]
Federico Ang,Hiroshi Tsutsui,Yoshikazu Miyanaga
2015 IEEE International Conference on Digital Signal Processing, DSP 2015, Singapore, July 21-24, 2015   302-306   2015   [Refereed]
Takahiro Inatsuki,Masato Matsuura,Kosuke Morinaga,Hiroshi Tsutsui,Yoshikazu Miyanaga
2015 IEEE International Conference on Digital Signal Processing, DSP 2015, Singapore, July 21-24, 2015   1062-1066   2015   [Refereed]
Rhandley Domingo Cajote,Watchara Ruangsang,Supavadee Aramvith,Prasit Prapinmongkolkarn,Yoshikazu Miyanaga,Takao Onoye
2015 IEEE International Conference on Digital Signal Processing, DSP 2015, Singapore, July 21-24, 2015   1071-1075   2015   [Refereed]
Rhandley Domingo Cajote,Watchara Ruangsang,Supavadee Aramvith,Prasit Prapinmongkolkarn,Yoshikazu Miyanaga,Takao Onoye
15th International Symposium on Communications and Information Technologies, ISCIT 2015, Nara, Japan, October 7-9, 2015   237-240   2015   [Refereed]
Htoo Maung Maung,Supavadee Aramvith,Yoshikazu Miyanaga
15th International Symposium on Communications and Information Technologies, ISCIT 2015, Nara, Japan, October 7-9, 2015   241-244   2015   [Refereed]
Xiaonan Nicole Shi,Yoshikazu Miyanaga
Computers & Electrical Engineering   40(5) 1498-1507   2014   [Refereed]
Nozomi Miyazaki,Shingo Yoshizawa,Yoshikazu Miyanaga
IEICE Transactions   97-A(1) 306-312   2014   [Refereed]
Federico Ang,Rowena Cristina L. Guevara,Yoshikazu Miyanaga,Rhandley Domingo Cajote,Joel Ilao,Michael Gringo Angelo Bayona,Ann Franchesca Laguna
IEICE Transactions   97-D(9) 2443-2452   2014   [Refereed]
Dabwitso Kasauka,Hiroshi Tsutsui,Hiroyuki Okuhata,Yoshikazu Miyanaga
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014, Chiang Mai, Thailand, December 9-12, 2014   1-4   2014   [Refereed]
Federico Ang,Yoshikazu Miyanaga,Rowena Cristina L. Guevara,Rhandley Domingo Cajote,Michael Gringo Angelo Bayona
IEEE International Symposium on Circuits and Systemss, ISCAS 2014, Melbourne, Victoria, Australia, June 1-5, 2014   2301-2304   2014   [Refereed]
Hiroki Iwaizumi,Masahiro Sugitani,Baiko Sai,Hiroshi Tsutsui,Yoshikazu Miyanaga
6th International Symposium on Communications, Control and Signal Processing, ISCCSP 2014, Athens, Greece, May 21-23, 2014   586-589   2014   [Refereed]
Hiroki Iwaizumi,Shingo Yoshizawa,Yoshikazu Miyanaga
VLSI Design   2013 625019:1-625019:10   Mar 2013   [Refereed]
Jirabhorn Chaiwongsai,Werapon Chiracharit,Kosin Chamnongthai,Yoshikazu Miyanaga,Kohji Higuchi
IEICE Transactions   96-A(6) 1403-1411   2013   [Refereed]
Kazi Obaidullah,Constantin Siriteanu,Shingo Yoshizawa,Yoshikazu Miyanaga
IEICE Transactions   96-A(10) 1984-1992   2013   [Refereed]
Yoshikazu Miyanaga,Wataru Takahashi,Shingo Yoshizawa
IEICE Transactions   96-A(11) 2074-2080   2013   [Refereed]
Kosuke Shimazaki,Shingo Yoshizawa,Yasuyuki Hatakawa,Tomoko Matsumoto,Satoshi Konishi,Yoshikazu Miyanaga
IEICE Transactions   96-A(11) 2114-2119   2013   [Refereed]
Shingo Yoshizawa,Yoshikazu Miyanaga
J. Electrical and Computer Engineering   2013 123827:1-123827:8   2013   [Refereed]
Kosuke Shimazaki,Shingo Yoshizawa,Yasuyuki Hatakawa,Tomoko Matsumoto,Satoshi Konishi,Yoshikazu Miyanaga
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2013, Kaohsiung, Taiwan, October 29 - November 1, 2013   1-4   2013   [Refereed]
Yuya Inoue,Hiroshi Tsutsui,Yoshikazu Miyanaga
International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2013, Naha-shi, Japan, November 12-15, 2013   363-368   2013   [Refereed]
Shingo Yoshizawa,Yasuyuki Hatakawa,Tomoko Matsumoto,Satoshi Konishi,Yoshikazu Miyanaga
International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2013, Naha-shi, Japan, November 12-15, 2013   645-650   2013   [Refereed]
Shingo Yoshizawa,Masahiro Sugitani,Yoshikazu Miyanaga
24th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013, London, United Kingdom, September 8-11, 2013   631-635   2013   [Refereed]
SIRITEANU Constantin,MIYANAGA Yoshikazu,BLOSTEIN Steven D.,KURIKI Satoshi,SHI Xiaonan
IEEE Trans Veh Technol   61(7) 3087-3099   Sep 2012   [Refereed]
KANETA Yusaku, YOSHIZAWA Shingo, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
IEICE Transactions on Information and Systems   E95.D(7) 1847-1857   Jul 2012   [Refereed]
In this paper, we propose a novel architecture for large-scale regular expression matching, called dynamically reconfigurable bit-parallel NFA architecture (Dynamic BP-NFA), which allows dynamic loading of regular expressions on-the-fly as well as...
OBAIDULLAH Kazi,SIRITEANU Constantin,YOSHIZAWA Shingo,MIYANAGA Yoshikazu
J Signal Process   16(3) 251-258   May 2012   [Refereed]
ZHANG Yuxin,MIYANAGA Yoshikazu,SIRITEANU Constantin
J Signal Process   16(2) 147-157   Mar 2012   [Refereed]
SUN Yiming, MIYANAGA Yoshikazu
IEICE Transactions on Information and Systems   E95-D(3) 844-852   Mar 2012   [Refereed]
A new approach to speech feature estimation under noise circumstances is proposed in this paper. It is used in noise-robust continuous speech recognition (CSR). As the noise robust techniques in isolated word speech recognition, the running spectr...
KIM Jaeseong,YOSHIZAWA Shingo,MIYANAGA Yoshikazu
Integr VLSI J   45(2) 132-140   Mar 2012   [Refereed]
YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E95-A(2) 550   Feb 2012   [Refereed]
We present area- and power-efficient pipeline 128- and 128/64-point fast Fourier transform (FFT) processors for 8x8 multiple-input multiple-output orthogonal frequency multiplexing (MIMO-OFDM) systems based on the specification framework of IEEE 8...
HAYASAKA NOBORU, MIYANAGA YOSHIKAZU
電気学会論文誌 C   132(10) 1667-1674   2012   [Refereed]
Shingo Yoshizawa,Yoshikazu Miyanaga
IEICE Transactions   95-A(2) 550-558   2012   [Refereed]
Yiming Sun,Yoshikazu Miyanaga
IEICE Transactions   95-D(3) 844-852   2012   [Refereed]
Jaeseong Kim,Shingo Yoshizawa,Yoshikazu Miyanaga
2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012, Seoul, Korea (South), May 20-23, 2012   2793-2796   2012   [Refereed]
Yusaku Kaneta,Shingo Yoshizawa,Shin-ichi Minato,Hiroki Arimura,Yoshikazu Miyanaga
IEICE Transactions   95-D(7) 1847-1857   2012   [Refereed]
Kazi Obaidullah,Yoshikazu Miyanaga
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2012, Hollywood, CA, USA, December 3-6, 2012   1-4   2012   [Refereed]
Xiaonan Nicole Shi,Constantin Siriteanu,Shingo Yoshizawa,Yoshikazu Miyanaga
5th International Symposium on Communications, Control and Signal Processing, ISCCSP 2012, Roma, Italy, May 2-4, 2012   1-5   2012   [Refereed]
Jirabhorn Chaiwongsai,Werapon Chiracharit,Kosin Chamnongthai,Yoshikazu Miyanaga,Kohji Higuchi
International Symposium on Communications and Information Technologies, ISCIT 2012, Gold Coast, Australia, October 2-5, 2012   82-86   2012   [Refereed]
Kazi Obaidullah,Yoshikazu Miyanaga
International Symposium on Communications and Information Technologies, ISCIT 2012, Gold Coast, Australia, October 2-5, 2012   193-197   2012   [Refereed]
Hiroki Iwaizumi,Shingo Yoshizawa,Yoshikazu Miyanaga
International Symposium on Communications and Information Technologies, ISCIT 2012, Gold Coast, Australia, October 2-5, 2012   204-209   2012   [Refereed]
TERAGAWA Masatsugu, FUJINE Toshiyuki, MIYANAGA Yoshikazu
The Transactions of the Institute of Electronics, Information and Communication Engineers. A   94(12) 1013-1024   Dec 2011   [Refereed]
Rhandley Domingo Cajote,Supavadee Aramvith,Yoshikazu Miyanaga
EURASIP J. Adv. Sig. Proc.   2011 63   2011   [Refereed]
Shingo Yoshizawa,Hirokazu Ikeuchi,Yoshikazu Miyanaga
IEICE Transactions   94-A(1) 324-331   2011   [Refereed]
Thi Xuan My Nguyen,Yoshikazu Miyanaga,Chaiyachet Saivichit
IEICE Transactions   94-B(6) 1606-1616   2011   [Refereed]
Tien Huu Vu,Supavadee Aramvith,Yoshikazu Miyanaga
IEICE Transactions   94-A(8) 1647-1655   2011   [Refereed]
Hisayoshi Kano,Shingo Yoshizawa,Takashi Gunji,Shougo Okamoto,Morio Tawarayama,Yoshikazu Miyanaga
IEICE Transactions   94-D(12) 2400-2408   2011   [Refereed]
Thi Xuan My Nguyen,Yoshikazu Miyanaga,Chaiyachet Saivichit
16th IEEE International Workshop on Computer Aided Modeling and Design of Communication Links and Networks, CAMAD 2011, Kyoto, Japan, June 10-11, 2011   46-50   2011   [Refereed]
Constantin Siriteanu,Xiaonan Nicole Shi,Yoshikazu Miyanaga
Proceedings of IEEE International Conference on Communications, ICC 2011, Kyoto, Japan, 5-9 June, 2011   1-5   2011   [Refereed]
Constantin Siriteanu,Yoshikazu Miyanaga
Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011, Seoul, Republic of Korea, February 21 - 23, 2011   105   2011   [Refereed]
Shingo Yoshizawa,Atsushi Orikasa,Yoshikazu Miyanaga
International Symposium on Circuits and Systems (ISCAS 2011), May 15-19 2011, Rio de Janeiro, Brazil   2705-2708   2011   [Refereed]
Xiaonan Nicole Shi,Constantin Siriteanu,Shingo Yoshizawa,Yoshikazu Miyanaga
11th International Symposium on Communications and Information Technologies, ISCIT 2011, Hangzhou, China, October 12-14, 2011   48-52   2011   [Refereed]
Yiming Sun,Yoshikazu Miyanaga
11th International Symposium on Communications and Information Technologies, ISCIT 2011, Hangzhou, China, October 12-14, 2011   309-313   2011   [Refereed]
Kyunghee Lee,Yoshikazu Miyanaga
11th International Symposium on Communications and Information Technologies, ISCIT 2011, Hangzhou, China, October 12-14, 2011   314-317   2011   [Refereed]
Yuxin Zhang,Yoshikazu Miyanaga
11th International Symposium on Communications and Information Technologies, ISCIT 2011, Hangzhou, China, October 12-14, 2011   439-442   2011   [Refereed]
Kazi Obaidullah,Constantin Siriteanu,Shingo Yoshizawa,Yoshikazu Miyanaga
11th International Symposium on Communications and Information Technologies, ISCIT 2011, Hangzhou, China, October 12-14, 2011   507-511   2011   [Refereed]
Shingo Yoshizawa,Daisuke Nakagawa,Nozomi Miyazaki,Takaya Kaji,Yoshikazu Miyanaga
11th International Symposium on Communications and Information Technologies, ISCIT 2011, Hangzhou, China, October 12-14, 2011   585-588   2011   [Refereed]
Takaya Kaji,Shingo Yoshizawa,Yoshikazu Miyanaga
International Symposium on Intelligent Signal Processing and Communications Systems, ISPACS 2011, Chiang Mai, Thailand, December 7-9, 2011   PID143-5   2011   [Refereed]
Nozomi Miyazaki,Shingo Yoshizawa,Yoshikazu Miyanaga
International Symposium on Intelligent Signal Processing and Communications Systems, ISPACS 2011, Chiang Mai, Thailand, December 7-9, 2011   1-6   2011   [Refereed]
Kazi Obaidullah,Constantin Siriteanu,Shingo Yoshizawa,Yoshikazu Miyanaga
International Symposium on Intelligent Signal Processing and Communications Systems, ISPACS 2011, Chiang Mai, Thailand, December 7-9, 2011   PID285-6   2011   [Refereed]
Jun Takizawa,Takaya Kaji,Shingo Yoshizawa,Takashi Gunji,Morio Tawarayama,Yoshikazu Miyanaga
International Symposium on Intelligent Signal Processing and Communications Systems, ISPACS 2011, Chiang Mai, Thailand, December 7-9, 2011   PID169-4   2011   [Refereed]
Xiaonan Nicole Shi,Constantin Siriteanu,Yoshikazu Miyanaga
2011 Spring Simulation Multi-conference, SpringSim '11, Boston, MA, USA, April 03-07, 2011. Volume 2: Proceedings of the 44th Annual Simulation Symposium (ANSS).   53-56   2011   [Refereed]
Journal of signal processing   14(1) 73-82   Jan 2010   [Refereed]
Jaeseong Kim,Shingo Yoshizawa,Yoshikazu Miyanaga
IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2010, Kuala Lumpur, Malaysia, December 6-9, 2010   628-631   2010   [Refereed]
Yusaku Kaneta,Shingo Yoshizawa,Shin-ichi Minato,Hiroki Arimura,Yoshikazu Miyanaga
Proceedings of the International Conference on Field-Programmable Technology, FPT 2010, 8-10 December 2010, Tsinghua University, Beijing, China   21-28   2010   [Refereed]
Shingo Yoshizawa,Hirokazu Ikeuchi,Yoshikazu Miyanaga
International Symposium on Circuits and Systems (ISCAS 2010), May 30 - June 2, 2010, Paris, France   2534-2537   2010   [Refereed]
Shingo Yoshizawa,Shinya Odagiri,Yasuhiro Asai,Takashi Gunji,Takashi Saito,Yoshikazu Miyanaga
Proceedings of the IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2010, 26-29 September 2010, Istanbul, Turkey   1049-1054   2010   [Refereed]
Chusit Pradabpet,Shingo Yoshizawa,Yoshikazu Miyanaga,Kobchai Dejhan
IEICE Transactions   E92-A(11) 2830-2836   2009   [Refereed]
Shingo Yoshizawa,Yoshikazu Miyanaga
International Symposium on Circuits and Systems (ISCAS 2009), 24-17 May 2009, Taipei, Taiwan   1743-1746   2009   [Refereed]
IMAI Suguru, NAKAGAKI Atsushi, SHIBATA Koji, MIYANAGA Yoshikazu
The IEICE transactions on information and systems (Japanese edetion)   91(9) 2268-2279   Sep 2008   [Refereed]
YOSHIZAWA Shingo, NISHI Kazuto, MIYANAGA Yoshikazu
The IEICE transactions on information and systems (Japanese edetion)   91(3) 687-695   Mar 2008   [Refereed]
A Complete Pipelined MMSE Detection Architecture in a 4×4 MIMO-OFDM Receiver
Proceeding of ISCAS 2008   2486-2489   2008   [Refereed]
Proceeding of 2008 International Symposium on Communications and Information Technologies   104-109   2008   [Refereed]
Proceeding of 2008 International Symposium on Communications and Information Technologies   422-425   2008   [Refereed]
Proceeding of 2008 International Symposium on Communications and Information Technologies   150-153   2008   [Refereed]
Proceeding of 2010 International Symposium on Communications and Information Technologies   539-542   2008   [Refereed]
Proceeding of 2009 International Symposium on Communications and Information Technologies   514-519   2008   [Refereed]
Improvement of Speech Quality using RSF Noise Reduction and its HW Design
Proceeding of The 2008 International Conference on Embedded Systems and Intelligent Technology   193-197   2008   [Refereed]
A Channel Estimation Method Using DCT-Based Decision Feedback in OFDM Communications
Proceeding of The 2008 International Conference on Embedded Systems and Intelligent Technology   147-151   2008   [Refereed]
Proceeding of 2008 IEEE Conference on Soft Computing in Industrial Applications   277-280   2008   [Refereed]
IEICE TRANSACTION on Fundamentals of Electronics, Communications, and Computer Sciences   E91-A(7) 1757-1762   2008   [Refereed]

Misc

 
中越達也, 早坂昇, 筒井弘, 宮永喜一
電子情報通信学会大会講演論文集(CD-ROM)   2019 ROMBUNNO.A‐15‐2   Mar 2019
山田健太郎, 筒井弘, 須藤彰紘, 宮永喜一
電子情報通信学会大会講演論文集(CD-ROM)   2019 ROMBUNNO.A‐15‐10   Mar 2019
Yoshikazu Miyanaga, Junji Yamano, Masaki Miura, Tohru Gotoh, Takashi Imagawa, Hiroshi Tsutsui
2018 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2018 - Proceedings   1087-1090   Mar 2019
© 2018 APSIPA organization. This paper shows the total system of real-time FHD video communication over wireless system. The wireless system can realize the data rate of 3Gbps by use of an 80-MHz baseband bandwidth and a 8\times 8 MIMO-OFDM scheme...
福元敦己, 今川隆司, 筒井弘, 宮永喜一, 越智裕之
電子情報通信学会技術研究報告   118(473(SIS2018 37-52)) 5‐9   Feb 2019
浮橋慶太, 今川隆司, 筒井弘, 宮永喜一, 越智裕之
電子情報通信学会技術研究報告   118(473(SIS2018 37-52)) 53‐58   Feb 2019
Yoshikazu Miyanaga, Hitoshi Kiya, Moncef Gabbouj
Proceedings - IEEE International Symposium on Circuits and Systems   2019-May    Jan 2019
Yu Tian, Jiayue Tang, Xiaonan Jiang, Hiroshi Tsutsui, Yoshikazu Miyanaga
ISCIT 2018 - 18th International Symposium on Communication and Information Technology   101-104   Dec 2018
© 2018 IEEE. This paper is mainly about the accuracy on the children speech recognition under noisy circumstances and methods to improve it. The power of the children's speech is lower than the adult. The accuracy of children speech recognition is...
Hay Mar Soe Naing, Risanuri Hidayat, Bondhan Winduratna, Yoshikazu Miyanaga
Proceedings of 2018 10th International Conference on Information Technology and Electrical Engineering: Smart Technology for Better Society, ICITEE 2018   254-259   Nov 2018
© 2018 IEEE. With the rapidly growth of digital computers, there has been an increasing demand to communicate with machines in efficient spoken manner. Speech recognition is the process of translating fromspoken words into readable text. To get th...
Ei Ei Tun, Supavadee Aramvith, Yoshikazu Miyanaga
ICEAST 2018 - 4th International Conference on Engineering, Applied Sciences and Technology: Exploring Innovative Solutions for Smart Society      Aug 2018
© 2018 IEEE. This paper proposes a feature reduction approach on a fuzzy SVM-based Coding Unit (CU) size decision method in a recent video encoding standard, High Efficiency Video Coding (HEVC). The proposed feature reduction approach with Rate Co...
渡辺大詩, 筒井弘, 今川隆司, 宮永喜一
映像情報メディア学会技術報告   42(23(BCT2018 60-72)) 47‐50   Jul 2018
池下貴大, 渡辺大詩, 筒井弘, 宮永喜一
映像情報メディア学会技術報告   42(11(BCT2018 38-49)) 25‐28   Mar 2018
井原大文, 今川隆司, 上坂浩貴, 鴻上慎吾, 筒井弘, 宮永喜一, 越智裕之
電子情報通信学会技術研究報告   117(455(VLD2017 89-128)) 55‐60   Feb 2018
Yoshikazu Miyanaga, Hiroshi Tsutsui, Takashi Imagawa
2017 17th International Symposium on Communications and Information Technologies, ISCIT 2017   2018-January 1-5   Jan 2018
© 2017 IEEE. The developed system has achieved the data rate of 3Gbps by use of an 80-MHz baseband bandwidth and a 8×8 MIMO-OFDM scheme. This paper describes the VLSI implementation of the 8×8 MIMO-OFDM system. A low-latency and the optimum pipeli...
Sujirat Attawibulkul, Boonserm Kaewkamnerdpong, Yoshikazu Miyanaga
BMEiCON 2017 - 10th Biomedical Engineering International Conference   2017-January 1-5   Dec 2017
© 2017 IEEE. Autism Spectrum Disorder (ASD) is a group of neurodevelopmental disorders. Autistic children experience challenges in three important areas: social communication, social interaction and repetitive behavior. Robots have become tools to...
今川隆司, 池下貴大, 筒井弘, 宮永喜一
電子情報通信学会技術研究報告   117(274(DC2017 33-67)) 105‐108   Oct 2017
渡辺大詩, 池下貴大, 筒井弘, 今川隆司, 宮永喜一
電気・情報関係学会北海道支部連合大会講演論文集(CD-ROM)   2017 ROMBUNNO.71   Oct 2017
George Mufungulwa, Hiroshi Tsutsui, Yoshikazu Miyanaga, Shin Ichi Abe, Mitsuru Ochi
ISSCS 2017 - International Symposium on Signals, Circuits and Systems      Sep 2017
© 2017 IEEE. This paper proposes a new noisy robust speech recognition method. Under noise circumstances, several noise reduction methods have been developed and they are applied in various noise conditions. However, in case of similar pronunciati...
杉山健太, 今川隆司, 筒井弘, 宮永喜一
回路とシステムワークショップ論文集(CD-ROM)   30th ROMBUNNO.WIP‐12   2017
Nutthacha Prukkanon, Kosin Chamnongthai, Yoshikazu Miyanaga
AEU - International Journal of Electronics and Communications   70 681-688   May 2016
© 2016 Elsevier GmbH. The performance of a non-tonal speech recognition system degrades when confronted with the task of recognizing tonal words. Several speech recognition applications require tonal word recognition. Therefore, this paper conside...
Federico Ang, Hiroshi Tsutsui, Yoshikazu Miyanaga
ISSCS 2015 - International Symposium on Signals, Circuits and Systems      Aug 2015
© 2015 IEEE. Current state-of-the - Art automatic, continuous speech recognition systems have enjoyed huge leaps in accuracy using speech features that assumes stationarity in the signals that are being processed. However, the said performance can...
Jirabhorn Chaiwongsai, Yoshikazu Miyanaga
Proceedings of the SICE Annual Conference   1124-1129   Oct 2014
© 2014 SICE. This paper proposes an improved tone model for low complexity tone recognition. This model recognizes tone by using only estimated vowel signals, called vowel magnitude difference function, vowel-MDF (VMDF) so that we can reduce the n...
Hatakawa Yasuyuki, Konishi Satoshi, Yoshizawa Shingo, Iwaizumi Hiroki, Hikiyama Yuki, Tsutsui Hiroshi, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   2014(1)    Mar 2014
Hikiyama Yuki, Iwaizumi Hiroki, Yoshizawa Shingo, Hatakawa Yasuyuki, Konishi Satoshi, Tsutsui Hiroshi, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   2014(1)    Mar 2014
Yoshizawa Shingo, Hatakawa Yasuyuki, Konishi Satoshi, Hikiyama Yuki, Iwaizumi Hiroki, Tsutsui Hiroshi, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   2014(1)    Mar 2014
Yuki Hikiyama, Hiroshi Tsutsui, Yoshikazu Miyanaga
13th International Symposium on Communications and Information Technologies: Communication and Information Technology for New Life Style Beyond the Cloud, ISCIT 2013   674-679   Dec 2013
Recently, multiple-input multiple-output (MIMO) technologies are adopted to wireless communication systems for high-speed, large capacity and high reliability communications. However, there can be variations of communication quality and throughput...
Masumi Watanabe, Hiroshi Tsutsui, Yoshikazu Miyanaga
13th International Symposium on Communications and Information Technologies: Communication and Information Technology for New Life Style Beyond the Cloud, ISCIT 2013   802-807   Dec 2013
In this paper, we propose a robust speech recognition method for similar pronunciation phrases. Along with the popularization of information devices such as personal computers and smart-phones, many applications controlled by voice have spread in ...
Kosuke Morinaga, Hiroshi Tsutsui, Yoshikazu Miyanaga
13th International Symposium on Communications and Information Technologies: Communication and Information Technology for New Life Style Beyond the Cloud, ISCIT 2013   685-690   Dec 2013
In recent years, digital high-definition television is widely used due to the start of digital terrestrial television broadcasting. In addition to such situation, ultra high definition television format such as 4K and 8K has been standardized. On ...
Masato Matsuura, Hiroshi Tsutsui, Yoshikazu Miyanaga
13th International Symposium on Communications and Information Technologies: Communication and Information Technology for New Life Style Beyond the Cloud, ISCIT 2013   797-801   Dec 2013
Recently, video quality on TV programs and the Internet has become dramatically high. In this situation, demand for sharing high quality video sequences without wiring is increasing. Considering the bit rate of wireless channels, we should use los...
Sun Xihao, Yoshikazi Miyanaga
ISSCS 2013 - International Symposium on Signals, Circuits and Systems      Dec 2013
Dynamic time warping (DTW) is a popular automatic speech recognition (ASR) method based on template matching[1] [2]. DTW algorithm compares the parameters of an unknown word with the parameters of one reference template. But the recognition rate i...
Sun Xihao, Yoshikazi Miyanaga
ISSCS 2013 - International Symposium on Signals, Circuits and Systems      Dec 2013
Dynamic time warping (DTW) is a popular automatic speech recognition (ASR) method based on template matching[1] [2]. DTW algorithm compares the parameters of an unknown word with the parameters of one reference template. But the recognition rate i...
YOSHIZAWA Shingo, HATAKAWA Yasuyuki, MATSUMOTO Tomoko, KONISHI Satoshi, MIYANAGA Yoshikazu
Technical report of IEICE. RCS   113(93) 91-96   Jun 2013
Due to the increasing demand for machine-to-machine (M2M) communication, a wireless system which realizes simultaneous communication of small-sized packets for a number of users is requested. Interleave division multiple access (IDMA) is known to ...
Yoshikazu Miyanaga, Wataru Takahashi, Sun Xihao
International Conference on Systems, Signals, and Image Processing   151-154   Jan 2013
This paper introduces our developed noise robust speech communication techniques and its LSI implementation. The speech communication system consists of automatic speech detection, speech recognition and speech rejection. The developed noise robus...
J. Chaiwongsai, W. Chiracharit, K. Chamnongthai, Y. Miyanaga, K. Higuchi
2013 World Congress on Sustainable Technologies, WCST 2013   60-65   Jan 2013
This paper proposes tone model enhancement for low complexity tone recognition. The tone model reduces the number of input frames by estimating fundamental frequency (F0) from only estimated vowel signals, called vowel magnitude difference functio...
IGARASHI Koichi, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
電子情報通信学会技術研究報告 : 信学技報   112(348) 31-34   Dec 2012
Power consumption by radio transmission will increase with increased utilization and data speeds in wireless transmission in recent years. As for power consumption reduction, individual modules of RF and baseband processing have been optimized for...
HASHIMOTO Yusuke, TAKAHASHI Wataru, MIYANAGA Yoshikazu
電子情報通信学会技術研究報告 : 信学技報   112(348) 39-43   Dec 2012
In this papar, we propose robust speech recognition for plosive sounds under noisy environment.The proposed method employs a simple algorithm and causes a good effect for the improvement of recognition rate among plosive sounds.The proposed method...
HIKIYAMA Yuki, YOSHIZAWA Shingo, SHI Xiaonan, MIYANAGA Yoshikazu
Technical report of IEICE. RCS   112(89) 55-60   Jun 2012
Recently, multiple-input multiple-output (MIMO) technologies are adopted to wireless communication systems for high-speed, large capacity and high reliability communications. However, there can be variations of communication quality and throughput...
SHIMAZAKI Kosuke, YOSHIZAWA Shingo, HATAKAWA Yasuyuki, MATSUMOTO Tomoko, KONISHI Satoshi, MIYANAGA Yoshikazu
Technical report of IEICE. RCS   112(89) 129-134   Jun 2012
This paper proposes a fast processing method for Tomlinson-Harashima Precoding (THP) circuit used for multi-user MIMO (MU-MIMO) wireless communication systems. The authors separately design the LQ decomposition and interference cancellation parts ...
INOUE Yuya, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
電子情報通信学会技術研究報告. SIS, スマートインフォメディアシステム   112(78) 7-12   Jun 2012
In order to achieve high-speed and large-capacity wireless communication, MIMO-OFDM systems have been adopted in such as IEEE802.11n standard wireless LAN systems. OFDM systems need to reduce peak-to-average power ratio (PAPR) to prevent communica...
IWAIZUMI Hiroki, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
電子情報通信学会技術研究報告. SIS, スマートインフォメディアシステム   112(78) 13-18   Jun 2012
In this paper, we propose a processor for singular value decomposition (SVD) and compression/reconstruction of feedback matrix, which is mandatory for SVD - multiple-input multiple-output - orthogonal frequency division multiplexing(MIMO-OFDM) sys...
Kim Jaeseong, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   2012    Mar 2012
Yoshikazu Miyanaga, Wataru Takahashi, Shingo Yoshizawa
APSIPA ASC 2011 - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011   1197-1198   Dec 2011
This report introduces recent noise robustspeech recognition systems and proposes new advancedspeech analysis techniques named MSC(ModulationSpectrum Control)/DRA (Dynamic Range Adjustment).
Yiming Sun, Constantin Siriteanu, Yoshikazu Miyanaga
APSIPA ASC 2011 - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011   902-905   Dec 2011
This paper proposes a new technique for speech feature estimation under noise circumstances. This new approach yields noise-robust continuous speech recognition (CSR). Noiserobust techniques for isolated word speech recognition typically employ th...
Thomas Fang Zheng, C. C. Jay Kuo, Yoshikazu Miyanaga
APSIPA ASC 2011 - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011      Dec 2011
TAKIZAWA Jun, KAJI Takaya, YOSHIZAWA Shingo, SAITO Takashi, GUNJI Takashi, MIYANAGA Yoshikazu
Technical report of IEICE. RCS   111(289) 13-18   Nov 2011
In a line-of-sight(LOS) multiple-input multiple-output (MIMO) communication, the actual throughput decreases due to the influence of a direct wave in high SNR environments with high spatial correlation. This paper reports experimental evaluation i...
TAKAHASHI Wataru, MIYANAGA Yoshikazu
IEICE technical report   111(210) 105-109   Sep 2011
In this report, we performed a keyword spotting from cotinuous speech under noisy environments. The proposed algorithm is based on the robust isolated word recognition and it is applied for the continuous speech. Super parallel calculation mechani...
Nakagawa Daisuke, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   2011 "S-49"-"S-50"   Aug 2011
Nutthacha Prukkanon, Kosin Chamnongthai, Yoshikazu Miyanaga
ECTI-CON 2011 - 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011   958-961   Aug 2011
This paper, we evaluated VT-AMDF pitch detection algorithm with Thai tone recognition system. The varied time interval of average magnitude different function (VT-AMDF), the original AMDF, and the circular AMDF (CAMDF) are used to extract fundamen...
Chusit Pradabpet, Yoshikazu Miyanaga, Sorawat Chivapreecha
ECTI-CON 2011 - 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011   377-380   Aug 2011
In this paper, we propose a new PAPR reduction by using hybrid of partial transmit sequences (PTS) and cascade adaptive peak power reduction (CAPPR) methods with non-uniform phase factor and coded side information (SI) technique. These methods are...
早坂 昇, 兵藤 一峰, 宮永 喜一
回路とシステムワークショップ論文集 Workshop on Circuits and Systems   24(266) 495-500   Aug 2011
TAKIZAWA Jun, KAJI Takaya, YOSHIZAWA Shingo, GUNJI Takashi, TAWARAYAMA Morio, MIYANAGA Yoshikazu
IEICE technical report   111(78) 41-46   Jun 2011
MIMO-OFDM enables high-speed wireless communication, and is employed in IEEE802.11n and IEEE802.11ac. This work has developed video transmission unit by cooperating hardware and software in wide- band MIMO-OFDM wireless systems. In the wireless tr...
KAJI Takaya, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   111(78) 47-52   Jun 2011
Beamforming using SVD-MIMO suppresses signal interference among antennas, and improves MIMO communication quality. In this paper, we describe a hardware design of singular value decomposition processor for SVD-MIMO systems dealing with maximum 16 ...
MIYAZAKI Nozomi, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   111(78) 53-58   Jun 2011
This presents power reduction for MIMO-OFDM receiver circuits using dynamic MIMO detection techniques. MIMO-OFDM imposes MIMO detection to separate received signals multiplexed in the transmitter, however MIMO detection has huge amount of computat...
LEE Kyunghee, MIYANAGA Yoshikazu
IEICE technical report   111(78) 75-79   Jun 2011
This report proposes low-pass running spectrum filtering (Low-Pass RSF) with low filtering order. Using the proposed filtering, additive noises in high frequency band of the modulation spectrum domain are reduced and high speed calculation mechani...
TAKIZAWA Jun, KAJI Takaya, YOSHIZAWA Shingo, GUNJI Takashi, TAWARAYAMA Morio, MIYANAGA Yoshikazu
IEICE technical report   111(31) 49-54   May 2011
MIMO-OFDM enables high-speed wireless communication, and is employed in IEEE802.11n and IEEE802.11ac. We developed a 2x2 MIMO-OFDM wireless transmission unit by using FPGA. This work has developed a video transmission equipment including network p...
Constantin Siriteanu, Xiaonan Shi, Yoshikazu Miyanaga
Proceedings of the 2011 Australian Communications Theory Workshop, AusCTW 2011   182-187   Apr 2011
This paper studies zero-forcing (ZF) detection for multiple-input multiple-output (MIMO) wireless communications systems and transmit-correlated and estimated Rician fading with realistic azimuth spread (AS) and K-factor. Due to the nonzero-mean c...
Takizawa Jun, Kano Hisayoshi, kaji Takaya, Yoshizawa Shingo, Gunji Takashi, Okamoto Shougo, Tawarayama Morio, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   2011    Feb 2011
KIM Jaeseong, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   110(445) 55-60   Feb 2011
OFDM baseband is performed by digital signal processing systems such as FFT. An operation wordlength is one of important factors which affect circuit area and power consumption performance in digital circuits. In LSI design, a large wordlength is ...
Douangsamone Phetsomphou, Shingo Yoshizawa, Yoshikazu Miyanaga
ISCIT 2010 - 2010 10th International Symposium on Communications and Information Technologies   672-676   Dec 2010
This paper presents a new partial transmit sequence (PTS) technique. It is used to effectively reduce the peak-toaverage power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) technology and is implemented to solve the PAPR proble...
Yoshikazu Miyanaga
ISCIT 2010 - 2010 10th International Symposium on Communications and Information Technologies      Dec 2010
Tsunehiko Chiba, Manabu Ito, Hidetoshi Yokota, Yoshikazu Miyanaga
Proceedings - 2010 International Conference on Advanced Technologies for Communications, ATC 2010   249-254   Dec 2010
Recently, femtocells, which cover a cell area of several tens of meters, have been attracting considerable attention in the field of mobile data communications. In the standard method, when a femtocell for data communication is connected through a...
J. Chaiwongsai, W. Chiracharit, K. Chamnongthai, Y. Miyanaga, K. Higuchi
ISPACS 2010 - 2010 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings      Dec 2010
Tone classification function is used for improving recognition accuracy in tonal speech recognizer (TONE-SPEC). Although average magnitude difference function (AMDF) is generally used to find pitch period of fundamental frequency, there are many f...
Masatsugu Teragawa, Takashi Kanda, Toshiyuki Fujine, Michiyuki Sugino, Yoshikazu Miyanaga
IDW'10 - Proceedings of the 17th International Display Workshops   2 1341-1344   Dec 2010
We proposed a new evaluation of color reproductive performance, and evaluated multi-primary color display. We used coverage ratio against object color database SOCS for evaluation of outer frame structure of display. And also, we used CDI for eval...
Constantin Siriteanu, Yoshikazu Miyanaga
APSIPA ASC 2010 - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference   440-445   Dec 2010
This study evaluates the performance of symbol detection and the numerical complexity of implementation for maximal-ratio eigencombining (MREC), also known as eigenbeamforming, for single-input multiple-output (SIMO) wireless communications system...
ORIKASA Atsushi, MIYANAGA Yoshikazu, YOSHIZAWA Shingo
IEICE technical report   110(322) 59-64   Nov 2010
This report presents a VLSI architecture of 128-point FFT in a 8x8 MIMO-OFDM receiver. A pipeline FFT processor based on multi-path delay commutator(MDC) architecture is effective for 4x4 MIMO-OFDM systems. To achieve the communication of more hig...
KANOU Hisayoshi, YOSHIZAWA Shingo, GUNJI Takashi, OKAMOTO Shougo, TAWARAYAMA Morio, MIYANAGA Yoshikazu
IEICE technical report   110(322) 65-70   Nov 2010
To deal with speed up and high capacity in wireless communication, the development of IEEE802.11ac has started for a next-generation WLAN standard. This standard targets the achievement of over 1 Gbps in a data rate by using the wider channel of m...
Satoh Yuki, Takahashi Wataru, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   2010    Aug 2010
Chitose Koudai, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   2010    Aug 2010
Liu Xilu, Siriteanu Constantin, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   2010(1)    Aug 2010
Chiba Tsunehiko, Yokota Hidetoshi, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   2010(2)    Aug 2010
KATAYAMA Keisuke, MIYANAGA Yoshikazu
IEICE technical report   110(189) 83-88   Aug 2010
Using a speech recognition system in reverberant and noisy environment, the recognition rate is seriously declined. In this paper, we study the reverberation and noise robust speech recognition system by multi-condition training. This method uses ...
Nguyen Thi Xuan My, Yoshikazu Miyanaga, Chaiyachet Saivichit
ECTI-CON 2010 - The 2010 ECTI International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology   51-55   Jul 2010
Connectivity is one of decision performance parameters that evaluate applicability of ad hoc networking in aeronautical network. In this paper, a connectivity analytical model for ad hoc networking among aircraft in a flight path is introduced. Th...
CHIBA Tsunehiko, ITO Manabu, YOKOTA Hidetoshi, MIYANAGA Yoshikazu
IEICE technical report   110(128) 7-12   Jul 2010
Recently, femtocells, which cover a cell area of several tens of meters, have been attracting considerable attention in the field of mobile data communications. In the standard method, when a femtocell for data communication is connected through a...
NAKAGAWA Daisuke, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   110(74) 19-24   Jun 2010
This report presents a piplined MMSE detection using Strassen's algorithms of matrix inversion and multiplication in a 8x8 MIMO-OFDM. MIMO detection imposes a real-time operation on the detection of each subcarrier. 4x4 MIMO detector using linear ...
TAKAHASHI Katsuya, YOSHIZAWA Shingo, HAYASAKA Noboru, MIYANAGA Yoshikazu
IEICE technical report   110(74) 37-42   Jun 2010
This paper proposes reduction of memory area and power using FIFO for HMM-based speech recognition system. In conventional method, buffering HMM-parameter in the register has made computations of output probability more faster. However, it has a p...
Risanuri Hidayat, Yoshikazu Miyanaga
2nd International Conference on Communication Software and Networks, ICCSN 2010   214-217   May 2010
This paper proposes BER analysis of Impulse Radio Ultra Wideband (IR-UWB) pulse modulations over S-V channel model. The UWB pulse is Gaussian monocycle pulse modulated using Pulse Position Modulation (PPM) and Pulse Shape Modulation (PSM). The cha...
Donekeo Lakanchanh, Suthichai Noppanakeepong, Shingo Yoshizawa, Yoshikazu Miyanaga
INEC 2010 - 2010 3rd International Nanoelectronics Conference, Proceedings   1441-1442   May 2010
The orthogonal frequency division multiplexing (OFDM) is one of the promising technologies to improve the spectral efficiency, enhance system capacity and mitigate inter-symbol interference in the wireless communication system. In this paper, we a...
Odagiri Shinya, Asai Yasuhiro, Yoshizawa Shingo, Gunji Takashi, Saito Takashi, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   2010(1)    Mar 2010
Asai Yasuhiro, Odagiri Shinya, Yoshizawa Shingo, Gunji Takashi, Saito Takashi, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   2010(1)    Mar 2010
KIM Jaseong, YOSHIZAWA Shingo, KANETA Yusaku, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
IEICE technical report   109(395) 31-34   Jan 2010
Field programmable gate array(FPGA)can reconfigure logic circuits after production, which is embedded into electric instruments. Recently, researchers and engineers who do not engage in the field of LSI have developed exclusive computer by FPGA as...
KANETA Yusaku, YOSHIZAWA Shingo, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
IEICE technical report   109(395) 131-136   Jan 2010
In this paper, we study the regular expression matching problem for fast data stream processing. We present an efficient algorithm for based on new bit-parallel methods, called parallel scatter and gather exploiting bit-parallelism in a computer w...
KIM Jaseong, YOSHIZAWA Shingo, KANETA Yusaku, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
IEICE technical report   109(394) 31-34   Jan 2010
Field programmable gate array (FPGA) can reconfigure logic circuits after production, which is embedded into electric instruments. Recently, researchers and engineers who do not engage in the field of LSI have developed exclusive computer by FPGA ...
KANETA Yusaku, YOSHIZAWA Shingo, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
IEICE technical report   109(394) 131-136   Jan 2010
In this paper, we study the regular expression matching problem for fast data stream processing. We present an efficient algorithm for based on new bit-parallel methods, called parallel scatter and gather exploiting bit-parallelism in a computer w...
KIM Jaseong, YOSHIZAWA Shingo, KANETA Yusaku, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
IEICE technical report   109(393) 31-34   Jan 2010
Field programmable gate array (FPGA) can reconfigure logic circuits after production, which is embedded into electric instruments. Recently, researchers and engineers who do not engage in the field of LSI have developed exclusive computer by FPGA ...
KANETA Yusaku, YOSHIZAWA Shingo, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
IEICE technical report   109(393) 131-136   Jan 2010
In this paper, we study the regular expression matching problem for fast data stream processing. We present an efficient algorithm for based on new bit-parallel methods, called parallel scatter and gather exploiting bit-parallelism in a computer w...
MIYANAGA Yoshikazu
IEICE technical report   109(338) 67-72   Dec 2009
In this report, a new noise robust speech recognition system is introduced. As a narrow sense of speech recognition, a system can recognize an observed waveform and then represents its result as an output. Such speech recognition systems are widel...
OGASAWARA Yuki, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   109(338) 95-100   Dec 2009
Cognitive radio can recognize communication environments around radio stations and improve frequency utilization in frequency, space, time domains and communication performance by changing radio frequency and communication system dynamically. In c...
Nguyen Thi Xuan My, Chaiyachet Saivichit, Yoshikazu Miyanaga
APSIPA ASC 2009 - Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference   791-796   Dec 2009
In this paper, we introduce the analytical model of 802.11 MAC layer to assess system performance under the effect of external elements such as load and the number of stations. Concurrently, we analyze the effect of these elements in term of total...
C. Pradabpet, S. Yoshizawa, Y. Miyanaga, K. Dejhan
2009 Innovative Technologies in Intelligent Systems and Industrial Applications, CITISIA 2009   393-397   Nov 2009
In this paper, we propose a new PAPR reduction using the hybrid of a partial transmit sequences (PTS) and an adaptive peak power reduction (APPR) methods with genetic algorithm (GA). These methods are used in an Orthogonal Frequency Division Multi...
MIYANAGA Yoshikazu, YOSHIZAWA Shingo, MINATO Shin-ichi
The Journal of the Institute of Electronics, Information and Communication Engineers   92(10) 833-836   Oct 2009
Orikasa Atsushi, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   2009    Sep 2009
Kim Jaeseong, Yoshizawa Shingo, Miyanaga Yoshikazu
情報科学技術フォーラム講演論文集   8(3) 589-590   Aug 2009
SATO Yuki, TAKAHASHI Wataru, HAYASAKA Noboru, MIYANAGA Yoshikazu
情報科学技術フォーラム講演論文集   8(3) 667-668   Aug 2009
OHNUKI Kazunaga, TAKAHASHI Wataru, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   109(112) 37-42   Jun 2009
In this report, the design of noise robust acoustic models is explained and its noise robustness based on these models is explored. The acoustic models are trained with noisy speech data under ordinary circumstances and thus its precision degrades...
OHNUKI Kazunaga, TAKAHASHI Wataru, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   109(111) 37-42   Jun 2009
In this report, the design of noise robust acoustic models is explained and its noise robustness based on these models is explored. The acoustic models are trained with noisy speech data under ordinary circumstances and thus its precision degrades...
OHNUKI Kazunaga, TAKAHASHI Wataru, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   109(110) 37-42   Jun 2009
In this report, the design of noise robust acoustic models is explained and its noise robustness based on these models is explored. The acoustic models are trained with noisy speech data under ordinary circumstances and thus its precision degrades...
IKEUCHI Hirokazu, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   109(78) 79-84   Jun 2009
This report presents a VLSI architecture of dynamic reconfigurable MMSE detection in a 4x4 MIMO-OFDM receiver. A circuit for MIMO-OFDM that computes the matrix inversion of each subcarrier by the real-time has been designed. But it is required sma...
KANOU Hisayoshi, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   109(78) 73-78   Jun 2009
Orthogonal frequency division multiplexing (OFDM) is adopted in IEEE802.11a/g wireless LAN standard. Since synchronization errors of OFDM reception timing cause inter symbol interference (ISI) and deteriorate communication property, high accuracy ...
KANETA Yusaku, YOSHIZAWA Shingo, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
Proceedings of the IEICE General Conference      2009
Chitose Koudai, Hayasaka Noboru, Yoshizawa Singo, Miyanaga Yoshikazu
FIT2009第8回情報科学技術フォーラム, Sep.   359-360   2009
Risanuri Hidayat, Kobchai Dejhan, Phichet Moungnoul, Yoshikazu Miyanaga
2008 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2008      Dec 2008
A gigahertz analog multiplier based on OTA and squaring is proposed. The multipliehas gigahertz frequency response is suitable to use in communication system. The circuitisbased on 0.18 pm CMOS technology simulated using PSPICE level 7. This techn...

Conference Activities & Talks

 
HIKIYAMA Yuki, YOSHIZAWA Shingo, SHI Xiaonan, MIYANAGA Yoshikazu
Technical report of IEICE. RCS   14 Jun 2012   
Recently, multiple-input multiple-output (MIMO) technologies are adopted to wireless communication systems for high-speed, large capacity and high reliability communications. However, there can be variations of communication quality and throughput...
SHIMAZAKI Kosuke, YOSHIZAWA Shingo, HATAKAWA Yasuyuki, MATSUMOTO Tomoko, KONISHI Satoshi, MIYANAGA Yoshikazu
Technical report of IEICE. RCS   14 Jun 2012   
This paper proposes a fast processing method for Tomlinson-Harashima Precoding (THP) circuit used for multi-user MIMO (MU-MIMO) wireless communication systems. The authors separately design the LQ decomposition and interference cancellation parts ...
Kim Jaeseong, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   6 Mar 2012   
KIM Jaeseong, 吉澤真吾, 宮永喜一
電子情報通信学会大会講演論文集   6 Mar 2012   
TAKIZAWA Jun, KAJI Takaya, YOSHIZAWA Shingo, SAITO Takashi, GUNJl Takashi, MIYANAGA Yoshikazu
Technical report of IEICE. RCS   9 Nov 2011   
In a line-of-sight(LOS) multiple-input multiple-output (MIMO) communication, the actual throughput decreases due to the influence of a direct wave in high SNR environments with high spatial correlation. This paper reports experimental evaluation i...
TAKAHASHI Wataru, MIYANAGA Yoshikazu
IEICE technical report   14 Sep 2011   
In this report, we performed a keyword spotting from cotinuous speech under noisy environments. The proposed algorithm is based on the robust isolated word recognition and it is applied for the continuous speech. Super parallel calculation mechani...
Nakagawa Daisuke, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   30 Aug 2011   
LEE Kyunghee, MIYANAGA Yoshikazu
IEICE technical report   2 Jun 2011   
This report proposes low-pass running spectrum filtering (Low-Pass RSF) with low filtering order. Using the proposed filtering, additive noises in high frequency band of the modulation spectrum domain are reduced and high speed calculation mechani...
MIYAZAKI Nozomi, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   2 Jun 2011   
This presents power reduction for MIMO-OFDM receiver circuits using dynamic MIMO detection techniques. MIMO-OFDM imposes MIMO detection to separate received signals multiplexed in the transmitter, however MIMO detection has huge amount of computat...
KAJI Takaya, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   2 Jun 2011   
Beamforming using SVD-MIMO suppresses signal interference among antennas, and improves MIMO communication quality. In this paper, we describe a hardware design of singular value decomposition processor for SVD-MIMO systems dealing with maximum 16 ...
TAKIZAWA Jun, KAJI Takaya, YOSHIZAWA Shingo, GUNJI Takashi, TAWARAYAMA Morio, MIYANAGA Yoshikazu
IEICE technical report   2 Jun 2011   
MIMO-OFDM enables high-speed wireless communication, and is employed in IEEE802.11n and IEEE802.11ac. This work has developed video transmission unit by cooperating hardware and software in wide- band MIMO-OFDM wireless systems. In the wireless tr...
TAKIZAWA Jun, KAJI Takaya, YOSHIZAWA Shingo, GUNJI Takashi, TAWARAYAMA Morio, MIYANAGA Yoshikazu
IEICE technical report   5 May 2011   
MIMO-OFDM enables high-speed wireless communication, and is employed in IEEE802.11n and IEEE802.11ac. We developed a 2x2 MIMO-OFDM wireless transmission unit by using FPGA. This work has developed a video transmission equipment including network p...
Takizawa Jun, Kano Hisayoshi, kaji Takaya, Yoshizawa Shingo, Gunji Takashi, Okamoto Shougo, Tawarayama Morio, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   28 Feb 2011   
KIM Jaeseong, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   24 Feb 2011   
OFDM baseband is performed by digital signal processing systems such as FFT. An operation wordlength is one of important factors which affect circuit area and power consumption performance in digital circuits. In LSI design, a large wordlength is ...
KANOU Hisayoshi, YOSHIZAWA Shingo, GUNJI Takashi, OKAMOTO Shougo, TAWARAYAMA Morio, MIYANAGA Yoshikazu
IEICE technical report   25 Nov 2010   
To deal with speed up and high capacity in wireless communication, the development of IEEE802.11ac has started for a next-generation WLAN standard. This standard targets the achievement of over 1 Gbps in a data rate by using the wider channel of m...
ORIKASA Atsushi, MIYANAGA Yoshikazu, YOSHIZAWA Shingo
IEICE technical report   25 Nov 2010   
This report presents a VLSI architecture of 128-point FFT in a 8x8 MIMO-OFDM receiver. A pipeline FFT processor based on multi-path delay commutator(MDC) architecture is effective for 4x4 MIMO-OFDM systems. To achieve the communication of more hig...
Chiba Tsunehiko, Yokota Hidetoshi, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   31 Aug 2010   
Liu Xilu, Siriteanu Constantin, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   31 Aug 2010   
Chitose Koudai, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   31 Aug 2010   
Satoh Yuki, Takahashi Wataru, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   31 Aug 2010   
KATAYAMA Keisuke, MIYANAGA Yoshikazu
IEICE technical report   26 Aug 2010   
Using a speech recognition system in reverberant and noisy environment, the recognition rate is seriously declined. In this paper, we study the reverberation and noise robust speech recognition system by multi-condition training. This method uses ...
Chiba Tsunehiko, Ito Manabu, Yokota Hidetoshi, Miyanaga Yoshikazu
IEICE technical report   8 Jul 2010   
Recently, femtocells, which cover a cell area of several tens of meters, have been attracting considerable attention in the field of mobile data communications. In the standard method, when a femtocell for data communication is connected through a...
TAKAHASHI Katsuya, YOSHIZAWA Shingo, HAYASAKA Noboru, MIYANAGA Yoshikazu
IEICE technical report   3 Jun 2010   
This paper proposes reduction of memory area and power using FIFO for HMM-based speech recognition system. In conventional method, buffering HMM-parameter in the register has made computations of output probability more faster. However, it has a p...
NAKAGAWA Daisuke, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   3 Jun 2010   
This report presents a piplined MMSE detection using Strassen's algorithms of matrix inversion and multiplication in a 8x8 MIMO-OFDM. MIMO detection imposes a real-time operation on the detection of each subcarrier. 4x4 MIMO detector using linear ...
Asai Yasuhiro, Odagiri Shinya, Yoshizawa Shingo, Gunji Takashi, Saito Takashi, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   2 Mar 2010   
Odagiri Shinya, Asai Yasuhiro, Yoshizawa Shingo, Gunji Takashi, Saito Takashi, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   2 Mar 2010   
KANETA Yusaku, YOSHIZAWA Shingo, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
Technical report of IEICE. VLD   19 Jan 2010   
In this paper, we study the regular expression matching problem for fast data stream processing. We present an efficient algorithm for based on new bit-parallel methods, called parallel scatter and gather exploiting bit-parallelism in a computer w...
KIM Jaseong, YOSHIZAWA Shingo, KANETA Yusaku, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
Technical report of IEICE. VLD   19 Jan 2010   
Field programmable gate array (FPGA) can reconfigure logic circuits after production, which is embedded into electric instruments. Recently, researchers and engineers who do not engage in the field of LSI have developed exclusive computer by FPGA ...
OGASAWARA Yuki, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   10 Dec 2009   
Cognitive radio can recognize communication environments around radio stations and improve frequency utilization in frequency, space, time domains and communication performance by changing radio frequency and communication system dynamically. In c...
MIYANAGA Yoshikazu
IEICE technical report   10 Dec 2009   
In this report, a new noise robust speech recognition system is introduced. As a narrow sense of speech recognition, a system can recognize an observed waveform and then represents its result as an output. Such speech recognition systems are widel...
Orikasa Atsushi, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   1 Sep 2009   
SATO Yuki, TAKAHASHI Wataru, HAYASAKA Noboru, MIYANAGA Yoshikazu
20 Aug 2009   
Kim Jaeseong, Yoshizawa Shingo, Miyanaga Yoshikazu
20 Aug 2009   
Chitose Koudai, Hayasaka Noboru, Yoshizawa Singo, Miyanaga Yoshikazu
20 Aug 2009   
OHNUKI Kazunaga, TAKAHASHI Wataru, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report. Signal processing   24 Jun 2009   
In this report, the design of noise robust acoustic models is explained and its noise robustness based on these models is explored. The acoustic models are trained with noisy speech data under ordinary circumstances and thus its precision degrades...
KANOU Hisayoshi, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   4 Jun 2009   
Orthogonal frequency division multiplexing (OFDM) is adopted in IEEE802.11a/g wireless LAN standard. Since synchronization errors of OFDM reception timing cause inter symbol interference (ISI) and deteriorate communication property, high accuracy ...
IKEUCHI Hirokazu, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   4 Jun 2009   
This report presents a VLSI architecture of dynamic reconfigurable MMSE detection in a 4x4 MIMO-OFDM receiver. A circuit for MIMO-OFDM that computes the matrix inversion of each subcarrier by the real-time has been designed. But it is required sma...
KANETA Yusaku, YOSHIZAWA Shingo, MINATO Shin-ichi, ARIMURA Hiroki, MIYANAGA Yoshikazu
Proceedings of the IEICE General Conference   4 Mar 2009   
ODAGIRI Shinya, OGASAWARA Yuki, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   18 Sep 2008   
Cognitive radio that can recognize surrounding wireless environments and select the best communication environment attracts attention because of limited frequency resources. Various methods of cognitive radio are considered, which are classified i...
ASAI Yasuhiro, YOSHIZAWA Shingo, GUNJI Takashi, SAITO Takashi, MIYANAGA Yoshikazu
IEICE technical report   18 Sep 2008   
This study evaluates the effect of distortion which the power amplifier generates in high frequency part of the transmitter in OFDM (Orthogonal Frequency Division Multiplexing) wireless communication systems with an 80-MHz bandwidth by enhancing I...
ODAGIRI Shinya, OGASAWARA Yuki, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report. Signal processing   18 Sep 2008   
Cognitive radio that can recognize surrounding wireless environments and select the best communication environment attracts attention because of limited frequency resources. Various methods of cognitive radio are considered, which are classified i...
ASAI Yasuhiro, YOSHIZAWA Shingo, GUNJI Takashi, SAITO Takashi, MIYANAGA Yoshikazu
IEICE technical report. Signal processing   18 Sep 2008   
This study evaluates the effect of distortion which the power amplifier generates in high frequency part of the transmitter in OFDM (Orthogonal Frequency Division Multiplexing) wireless communication systems with an 80-MHz bandwidth by enhancing I...
Takahashi Wataru, Oonuki Kazunaga, Hayasaka Noboru, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   2 Sep 2008   
Kim Jaeseong, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   2 Sep 2008   
Chi HungChung, Ogasawara Yuki, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   2 Sep 2008   
OGASAWARA Yuki, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   24 Jul 2008   
The change of surrounding environments affects communication quality largely in wireless communications. The conventional communication fixing a communication mode cannot follow the change of environments and deteriorates communication performance...
MIYANAGA Yoshikazu, YOSHIZAWA Shingo
IEICE technical report. Signal processing   19 Jun 2008   
In this report, the standardization of high throughput wireless LAN, i.e., IEEE 802.11n, is first introduced and then the next generation on very high throughput wireless LAN, i.e., IEEE 802.11 VHT, is also explained according to the activity of I...
OHNUKI Kazunaga, TAKAHASHI Wataru, MIYANAGA Yoshikazu
IEICE technical report   6 Jun 2008   
In this paper, new robust speech feature model is designed and applied for the continuous speech recognition system. Using this features, the noise robust continuous speech recognition can be realized. The new running spectrum analysis (RSA) metho...
OHTSUKI Noriyuki, UCHIKAWA Yuichi, MIYANAGA Yoshikazu
IEICE technical report   6 Jun 2008   
The technique by RSA is proposed as one of the techniques for speech noise reduction. RSA has the possibility of becoming a noise reduction technique though is the fault that the amount of processing increases compared with the SS method. In this ...
YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   5 Jun 2008   
This report presents a VLSI architecture of MMSE detection in a 4×4 MIMO-OFDM receiver. Pack-et-based MIMO-OFDM imposes a considerable throughput requirement on the matrix inversion because of strict timing in frame structure and subcarrier-by-sub...
SATO Mon, YOSHIZAWA Shingo, MIYANAGA Yoshikazu, HAYASAKA Noboru
IEICE technical report   5 Jun 2008   
In many speech recognition systems, the speech features are based on MFCC. Exactly speaking, the 1st-12th MFCC, the 0th-12th ΔMFCC and the 0th-12th ΔΔMFCC are used into these systems. Under noisy condition, the spectral subtraction (SS) and the ce...
TAKAHASHI Wataru, OONUKI Kazunaga, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   20 Sep 2007   
In this report a voice activity detection method is studied for noisy environments. The proposed method applies running spectrum filtering (RSF) that filters a time trajectory of short-time spectrums in a running spectral domain. After the noise r...
Yoshizawa Shingo, Nishi Kazuto, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   29 Aug 2007   
OHTSUKI Noriyuki, MIYANAGA Yoshikazu
IEICE technical report   8 Jun 2007   
In this report, We propose a musical noise reduction method in frequency domain. The musical noise was produced in the noise reduction method on frequency domain. When the signal-to-noise ratio of original speech signals is very low, the processed...
NISHI Kazuto, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   7 Jun 2007   
Cognitive radio recognizes the used condition of frequency depending on space and time and improves efficiency of frequency utilization and communication performance by selecting an optimal communication system. This paper proposes a new method re...
SATOH Akeo, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   7 Jun 2007   
In this report, we propose a new effective decision feedback channel estimation method in OFDM-based wireless communication under fast fading environment. The propagation channels are quite variable during OFDM symbols in fast fading environment. ...
Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   7 Mar 2007   
FUJITA Takahiko, HAYASAKA Noboru, MIYANAGA Yoshikazu
IEICE technical report   2 Mar 2007   
Noise robust speech processing methods have been widely used in isolated word recognition. It works effectively with steady noise. However, in real environment, some noises are often time invariant, and causes the degradation of its performance. W...
SUKEGAWA Masanori, HAYASAKA Noboru, MIYANAGA Yoshikazu
IEICE technical report   2 Mar 2007   
As a robust speech recognition system, we have proposed RSF and DRA. The RSF is a noise robust technique for reducing the convolutive noise and a part of additive noise. The DRA is a technique for the adjustment between clean and noisy speech feat...
SUGAWARA Takayuki, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   22 Nov 2006   
This report explores new OFDM systems with variable DFT points by use of channel estimation reducing noise interferences. First, we demonstrate that the DFT size impacts on OFDM frame length to satisfy a required throughput and effects BER perform...
NISHI Kazuto, YOSHIZAWA Shingo, SUGAWARA Takayuki, MIYANAGA Yoshikazu
IEICE technical report   22 Nov 2006   
This report presents a small-area variable-length FFT processor for OFDM wireless LAN systems based on the IEEE802.11n Draft. The new systems use both 20 and 40MHz bandwidth and tramsmit multi spatial streams by MIMO techniques. Since it causes an...
IUCHI Masahiro, SUGAWARA Takayuki, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   16 Nov 2006   
In this paper, we propose a new narrowband interference cancellation in high-speed power line communication(PLC), and compare this method with a conventional method. In the proposed method, firstly, we make a number of replicas with different ampl...
Nishi Kazuto, Yoshizawa Shingo, Sugawara Takayuki, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   7 Sep 2006   
Sugawara Takayuki, Miyanaga Yoshikazu
Proceedings of the Society Conference of IEICE   7 Sep 2006   
YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   9 Jun 2006   
This report presents a low power architecture that dynamically controls a wordlength in a wireless OFDM demodulator. Finding the optimum wordlength for digital circuit systems is a difficult issue since the trade-off between hardware cost and syst...
YAMAUCHI Yasushi, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   9 Jun 2006   
This report presents a new compensation method in IQ imbalance and carrier frequency offset for wireless OFDM systems. In a RF circuit, a direct conversion architecture has the advantage of reducing a cost in receivers. However, this architecture ...
MATSUYAMA Yutaka, KAMI Yoshiki, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   9 Jun 2006   
In this study, we apply a low-density parity check (LDPC) code into the error correcting of a high-speed PLC system for reliable communication. As conventional methods in LDPC, a QC code has the best BER performance which is near Shannon limit. Th...
SUGAWARA koji, MIYANAGA Yoshikazu
IEICE technical report   16 Mar 2006   
In this paper, we propose to use Adaptive Peak Power Reduction (APPR) method and Partial Transmit Sequence (PTS) method at the same time for OFDM peak power reduction. APPR method reduces not only peak power, but also out-band signal emission. How...
IKEDA Shinichi, SUGAWARA Takayuki, MIYANAGA Yoshikazu
IEICE technical report   16 Mar 2006   
In this report, we design the most suitable DFT (FFT) mode under mobile environment based on the IEEE802.11a wireless LAN standard. In case of small fading influence, BER is improved by using DFT (FFT) mode with large processing points. On the oth...
Sukegawa Masanori, Hayasaka Noboru, Wada Naoya, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   8 Mar 2006   
Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   8 Mar 2006   
OTSUKI Nobuaki, MIYANAGA Yoshikazu
IEICE technical report   18 Nov 2005   
MIMO-OFDM System is known as a method for getting diversity gain and making throughput much higher by transmitting dependent OFDM data streams from multiple transmitters to multiple receivers. STBC(Space-Time Block Coding) and SDM(Space Division M...
KAMI Yoshiki, MIYANAGA Yoshikazu
IEICE technical report   18 Nov 2005   
In this paper, we present LDPC-coded OFDM system for wireless communication. LDPC code has superior performance in error correcting and can be adopted in various communication systems. We evaluate BER performance for wireless communication system ...
WADA Naoya, HAYASAKA Noboru, YOSHIZAWA Shingo, MIYANAGA Yoshikazu
IEICE technical report   17 Nov 2005   
On the modulation spectral domain, speech components and noise components can be separated by their modulation spectral bands. Although conventional methods extract speech components using band-pass filtering on running spectrum, those extractions...
SUGAWARA Takayuki, MIYANAGA Yoshikazu
9 Jun 2005   
In this report, we propose a dynamic reconfigurable despreader for VSF-OFCDM with two-dimentional spreading. The spreading factors in the time and frequency domains are varied based on the cell configuration, channel load, and propagation channel ...
YOSHIZAWA Shingo, SUGAWARA Kouji, MIYANAGA Yoshikazu, OCHI Hiroshi, ITHO Yoshio, HATAOKA Nobuo, SAI Baiko, TAKAYAMA Norihisa, HIRATA Masaki
9 Jun 2005   
This report describes an OFDM wireless communication system to employ 80-MHz bandwidth. The system is based on the expansion of the IEEE802.11a standard. We consider the optimum specifications of OFDM frame, DFT size, allocation of subcarriers req...
HAYASAKA Noboru, YOSHIZAWA Shingo, WADA Naoya, MIYANAGA Yoshikazu
9 Jun 2005   
We proposed RSF and DRA as the noise robust methods. The RSF is a technique for applying the filter to the spectrum twice. This technique has the feature of speech enhancement, reduction of convolutive noise and a part of additive noise. However, ...
OHTSUKI Noriyuki, OHNUKI Kazunaga, MIYANAGA Yoshikazu
9 Jun 2005   
In this preport, We propose a musical noise reduction method for speech enhancement using RSF. The musical noise was produced in the noise reduction method on frequency domain. In the RSF method, when the signal-to-noise ratio of original speech s...
SUGAWARA Takayuki, MIYANAGA Yoshikazu
10 Dec 2004   
We propose a matched filter, a simple moving average circuit and a threshold generator for high-speed wireless communication. Since the proposed matched filter calculates summation by using correlators that are composed in parallel, each correlato...
OHTSUKI Noriyuki, ZHU Qi, MIYANAGA Yoshikazu
10 Sep 2004   
In this report, We propose a noise reduction method on frequency domain for speech enhancement. Ah additive noise in a speech signal is suppressed this method using Running Spectrum Filtering (RSF). RSF is digital filters on frequency domain. The ...
OHTSUKI Noriyuki, ZHU Qi, MIYANAGA Yoshikazu
Technical report of IEICE. TM   1 Jul 2004   
In this preport, We propose a noise reduction method on frequency domain for speech enhancement. An additive noise in a speech signal is suppressed this method using Running Spectrum Filtering (RSF). RSF is digital filters on frequency domain. The...
ISHIDA Kuniko, HAYASAKA Noboru, Yoshikazu Naoya, MIYANAGA Yoshikazu
18 Jun 2004   
In this report, a noise robust speech recognition system which has been already developed is extended. The noise robust speech mechanism in the recognition system has been designed on the moderation spectrum domain. By using high order FIR filteri...
YOSHIZAWA Shingo, HAYASAKA Noboru, WADA Naoya, MIYANAGA Yoshikazu
IEICE technical report. Circuits and systems   10 Jun 2004   
When a speech recognition system is used in real environment, noises cause a serious problem in the recognition systems. The systems are required to be robust with various noisy environments. In this paper, we propose a method that normalizes feat...
Hayasaka Noboru, Wada Naoya, Yoshizawa Shingo, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   8 Mar 2004   
Yoshizawa Shingo, Wada Naoya, Hayasaka Noboru, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   8 Mar 2004   
Hatakawa Yasuyuki, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   8 Mar 2004   
Sugawara Takayuki, Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   8 Mar 2004   
SATOH Hiroaki, YOSHIDA Norinobu, MIYANAGA Yoshikazu
Proceedings of the IEICE General Conference   8 Mar 2004   
Miyanaga Yoshikazu, Ogawa Hiroyo, Kanazawa Ami, Asiba Syuichi, Ishigaki Manabu, Ochiai Shigeyuki, Sogou Hiromi, Yoshino Tetsuya, Nishizawa Takahiko
Proceedings of the IEICE General Conference   8 Mar 2004   
Miyanaga Yoshikazu
Proceedings of the IEICE General Conference   8 Mar 2004   
SATOH Hiroaki, YOSHIDA Norinobu, MIYANAGA Yoshikazu
20 Nov 2003   
SATOH Hiroaki, YOSHIZAWA Shingo, YOSHIDA Norinobu, MIYANAGA Yoshikazu
20 Nov 2003   
FUJIOKA Kazuma, HAYASAKA Noboru, YOSHIDA Norinobu, MIYANAGA Yoshikazu
IEICE technical report. Speech   15 Aug 2003   
A new method of noise reduction is proposed for speech signals by using Running Spectrum Filtering(RSF). The proposed method explores the difference on the spectral time variation between speech signals and noise signals and then reduces only nois...

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 2008 - 2011    Investigator(s): Yoshikazu MIYANAGA
In this study, the following two important results have been obtained :(1) the development of acoustic ghost canceller in automatic speech recognition system, and (2) very low power consumption LSI of real time speech recognition. About (1), the n...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 2003 - 2006    Investigator(s): Yoshikazu MIYANAGA
In this study, the new algorithm of noise robust speech recognition and its real-time LSI system with low po wer consumption have been developed. These techniques are used under actual environment and useful for mobile human interface. As to the a...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(一般研究(C))
Project Year: 1985 - 1987    Investigator(s): Nobuo NAGAI
1. For the input and output signals of a stochastic process system, the transfer function is obtained by spectrum estimation or linear prediction. In this reseearch, we have developed Model Identification System (MIS) to estimate time varying para...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(一般研究(C))
Project Year: 1985 - 1986    Investigator(s): MIKI NOBUHIRO
In this project we aimed at estimating the vocal-tract parameters for speech synthesis based on a physical model of speech production, and researched a estimation method of vocaltract area functions of vowels from the ARMA analysis model of speech...
LSI System Design with Ultra-Low Power Comsuption
Project Year: 1979