Sponsored by JST AdCORP, Grad. School of Engineering, Osaka U.
Co-Sponsored by WireX, U. of Electro-Communications,and Co-Creative Incubation Center, OTRI, Osaka U.

Green IoT Workshop

In-Person Only
Saji Keizo Memorial Hall,
Nakanoshima Center, Osaka U.

2024 10:00-16:00

6/20 (Thu.)

Entry Free. Please Register at https://forms.gle/z7e1KKugKGj6MBri8
IoT today is going to be NOT Green! Sensing, communications, andsignal processing including ML/AI systems consume huge energy andmaterial resources. In this workshop, future technology directions forrealizing “Green IoT” systems will be discussed among eminent invited
speakers from cross-boudary fields related to “Green IoT”.

Workshop Program
10:00-10:30
Opening Remarks
Yuichi Tanaka, Osaka U.

Presentations by Eminent Speakers

10:30-11:30 “Graph Signal Processing & Learning for Image Applications”

While graph signal processing (GSP) is commonly known for spectral analysis and filtering ofsignals on structured kernels described by graphs, graph-based optimization algorithms, basedon different assumed graph signal smoothness priors like graph Laplacian regularizer (GLR)
and graph total variation (GTV), can be surprisingly effective for processing of images onregular 2D grids when unrolled into feedforward neural nets, while providing mathematicalinterpretation. Learning few parameters compared to "black box" neural networkarchitectures like CNNs and transformers, they are also robust to covariance shifts. We study
examples of several imaging applications, including image denoising, image interpolation,image deblurring, and satellite image declouding.

Gene Cheung, York U.

11:30-12:30 “CMOS Integrated Circuits: A Versatile Platform for
Affordable Low-Power Biomedical Devices”

Biomedical device technology has rapidly advanced in the last decade with CMOS integrated circuits
playing an integral role due to facilitating high levels of integration and sensitivity at low costs. In thistalk, I will demonstrate how manipulation and sensing of electric and magnetic fields on CMOS chips
can enable the design of high-performance, low-power Point-of-Care biosensors, ingestible devices, andimplantable devices. I will introduce and discuss four different devices that we have recently developedin my lab: a magnetic biosensor that supports wash-free immunodetection without any post-processmodifications based on a dual-frequency concurrent oscillator, an ingestible “smart” pill that achieves
sub-mm 3D localization accuracy, the first ever pulse-mode EPR spectrometer on a chip, and a highvoltage neural stimulator for optic nerve and deep brain stimulation with fully on-chip charge balancing.

12:30-14:00 BreakConstantine Siders, U. of Southern California

14:00-15:00 “Energy Implications of Terahertz Communications
Across Scales: Focusing in Time and Space”

Terahertz communication is envisioned as a key technology for the next generation of wireless systems.
The vast available bandwidths at terahertz frequencies lead to extremely high data rates, potentiallyexceeding one terabit per second. In addition, the sub-millimetric wavelength of terahertz radiation
leads to tiny antennas which, on the one hand, can be embedded into effectively everything, enabling
the so-called Internet of Nano-Things, and, on the other hand, can be densely integrated into large
arrays offering very high directivity gains with relatively small footprints. Traditionally, terahertz
communication has not been associated with energy efficiency (the contrary, in fact). Instead, this talkwill discuss the opportunities for energy efficiency that terahertz systems bring to the Green Internet ofThings and the Internet of Nano-Things. After providing an updated view on the state of the art ofterahertz technology and terahertz channel modeling, the opportunities that ultra-short transmissions
and narrow-focused beams bring for next-generation terahertz communication networks.

Josep Jornet, Northeastern U.

15:00-16:00 “How to Make Wireless Communications Greener”
In order to achieve SDGs in future wireless communications including 6G, substantiallyreduction of power consumption in signal transmission is required while achieving
ultra high data rate with ultra high reliability. However, achieving ultra high bandwidth
efficiency with ultra low power consumption should be theoretically infeasible. In thistalk, we discuss how to make high speed wireless communication systems greener
from a communication system engineer's viewpoint.

Hideki Ochiai, Osaka U.

For more information, please visit: https://www.greeniot.org/giotws