Frontier Research Institute for Interdisciplinary Sciences
Tohoku University


Hashida Hiroaki

Assistant ProfessorInformation and Systems

Mentor Information
Nei Kato (Graduate School of Information Sciences)
Research Fields
Wireless communications
Research Subjects
  • Design of Radio Propagation Environment in Architectural and Urban Environments
  • Intelligent Reflecting Surface-aided Wireless Communications
Academic Society Membership  IEEE, The Institute of Electronics, Information and Communication Engineers
Research Outline  

In the realm of wireless communication technology, pioneering efforts are underway in the millimeter/sub-terahertz band. However, radio waves operating in this high-frequency band are notably susceptible to environmental changes, such as obstruction by blockages. Understanding the impact of environmental changes on wireless communication performance is crucial for the development of next-generation communication infrastructure. To address this, we are embarking on two research projects:

(1) Development of a programmable radio wave propagation environment using IRS

We are devising a method to control radio wave propagation using Intelligent Reflecting Surfaces (IRS), a type of surface comprised of several passive reflection elements that can manipulate the phase shift of incident radio waves. By harnessing the dynamic control capabilities of radio propagation alongside multi-element antennas and IRS, we aim to establish a methodology for designing optimal radio environments for communication and wireless sensing.

(2) Establishment of wireless propagation environment design methodology based on communication/architectural analysis

Through the creation of a "communication/architectural approach," which integrates wireless communication system design with device installation for buildings and infrastructure, we are developing an interdisciplinary method for the systematic design of wireless propagation environments. Additionally, we will pioneer a novel architectural and urban design strategy aimed at optimizing radio environments. This includes considerations such as the shape, layout, orientation, and structural composition of buildings.




Related Posts