Information Communication Network


Lab Name and Affiliation

Information Communication Network

Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Japan

Lab Director (or Principal Investigator)

Yoshikazu Miyanaga, Prof. Dr.Eng.

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, 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 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 chair of Technical Group on Smart Info-Media System, IEICE (IEICE TG-SIS) from 2004 to 2006 and now a member of the advisory committee, IEICE TG-SIS. He was vice-President, IEICE Engineering Science (ES) Society from 2010 to 2011. He is Fellow member of IEICE.

He is also vice-President, Asia-Pacific Signal and Information Processing Association (APSIPA) from 2009 to 2013.

He is a member of Board of Governor, IEEE CAS Society from 2011 to 2013.

Lab Introduction

The laboratory of Information Communication Network belongs to Graduate School of Information Science and Technology, Hokkaido University. As the vision of our laboratory, we would like to promote the new information society suitable for everybody including children and aging people, and also suitable for all environments on our earth. In order to realize it, high sophisticated human-machine-network interface and lowest power consumption systems are studied in our laboratory. The main missions are the research and development of the high-speed and low-power consumption new multi-media systems, advanced wireless network and so on.

Currently, the following research topics are studied:
(1) Noise Robust Speech Recognition and its LSI Design
(2) High Speed Wireless Communication Systems and its LSI Design
(3) Design of Low Power Consumption LSI Systems
(4) Intelligent Image and Video Wireless Communication Systems
(5) Next Generation e-Learning

As to (1), the low power consumption LSI of autonomous speech recognition (ASR) has been developed. Our ASR can recognize a set of phrases against any noises. For example, it can recognize speech accurately even in case of long distance microphones under serious low SNR of noise circumstances and strong echo conditions.

As to (2), ultra high speed wireless LSI system has been developed. It is based on MIMO and OFDM. The implemented algorithms on MIMO technology and OFDM technology have been newly developed for the realization of both high speed and low power consumption. In addition, the whole system has been implemented into a LSI system.

For (1) and (2), both new algorithms suitable for low power consumption hardware and new hardware designs suitable for real time processing are always considered and studied, i.e., (4). In addition, the high speed wireless system is currently applied for the high definition video communications, i.e, (4).

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