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Integrated-Media Communications (Morikura Lab)

Multimedia communication can be realized through a variety of wired and wireless transmission media such as fiber optics, radio waves, co-axial cables, power lines, etc. We aim to construct user-oriented information-communication systems for backbone core networks, mobile communication networks, and ubiquitous home networks. For that purpose, we research technologies of the network layer, the media access layer, and the physical layer and their integration by taking advantage of the nature of individual transmission media.

Academic Staff


Masahiro MORIKURAProfessor (Graduate School of Informatics)

Research Interests

  • Fixed Wireless Access
  • Cross Layer Design
  • Wireless LAN
  • Synchronization
  • Power Line Communication
  • Software Defined Radio


Kyoto University, Yoshida Campus, Engeering Bld. 3, Room S406
TEL: +81-75-753-5348
FAX: +81-75-753-5349
E-mail: morikura@i.kyoto-u.ac.jp


Koji YAMAMOTOAssociate Professor (Graduate School of Informatics)

Research Interests

  • Distributed cooperative radio networks
  • Spectrum sharing systems


Room S408, Faculty of Engineering Bldg. No.3, Yoshida-Campus, Kyoto University
E-mail: kyamamot @ i.kyoto-u.ac.jp

Takayuki NISHIO

Takayuki NISHIOAssistant Professor (Graduate School of Informatics)

Research Interests

  • Hetero Media Communications
  • Cross Layer Design
  • Wireless LAN


Kyoto University, Yoshida Campus, Engeering Bld. 3, Room S404
TEL: +81-75-753-5960
FAX: +81-75-753-5349
E-mail: nishio at i.kyoto-u.ac.jp

Introduction to R&D Topics

Fixed Wireless Access

The fixed wireless access networks are an infrastructure-free communication techenology. The realization of communicatoin services by the fixed wireless access networks has been desired. We investigate the modulation, the coding, and the media access technologies of the fixed wireless access networks to enhance the system capacity.


Mobile Communication

We research the adaptive modulation scheme, the signal processing technology, and the error control scheme to enhance the data rate for the mobile communication systems. We also research the software defined radio technology which can communicate with many different wireless communication systems.


Power Line Communication

There are a lot of information appliances, such as television receivers, desktops, and so on, in a house. Power line communications are one of techniques to connect these devices in the house. However, as power line is not originally for communication use, there are various technical problems for power line communications. One is to coexist with the existing wireless communication and broadcasting systems because power line communications cause radio wave leakage from the power line. Also, noise from electrical appliances lead to the deterioration of the communication quality of power line communications. Thus, the characteristic of power line is not clarified as a transmission medium. Therefore, we are studying the mechanism to induce the radiated emission for power line communications and the mechanism to generate the noise over power line.