Introduction of measurement techniques in ultrasonic electronics: Basic principles and recent trends

K Mizutani, N Wakatsuki, T Ebihara - Japanese Journal of …, 2016 - iopscience.iop.org
Measurement—the act of measuring physical properties that we perform—has the potential
to contribute to the successful advancement of sciences and society. To open doors in …

A real-time underwater acoustic telemetry receiver with edge computing for studying fish behavior and environmental sensing

Y Yang, R Elsinghorst, JJ Martinez… - IEEE Internet of …, 2022 - ieeexplore.ieee.org
Underwater acoustic telemetry has emerged as a powerful tool for practical applications,
including resource exploration, environmental monitoring, and aquatic animal tracking …

Underwater acoustic positioning in multipath environment using time-of-flight signal group and database matching

T Yoshihara, T Ebihara, K Mizutani… - Japanese Journal of …, 2022 - iopscience.iop.org
One of the challenges in underwater acoustic positioning is the occurrence of missing
measurements and large errors in multipath environments, such as shallow water and …

Experimental demonstration of spatial division multiplexing multiple-input/multiple-output underwater acoustic communication using a time-reversal method at the …

Y Kida, M Deguchi, T Shimura - Japanese Journal of Applied …, 2023 - iopscience.iop.org
In this paper, the performance of the adaptive passive time-reversal method is investigated
for an at-sea experiment of multiple-input/multiple-output underwater acoustic …

Improvement of communication quality using compressed sensing in underwater acoustic communication system with orthogonal signal division multiplexing

Y Tabata, T Ebihara, H Ogasawara… - Japanese Journal of …, 2020 - iopscience.iop.org
We propose the use of compressed sensing for an underwater acoustic (UWA)
communication system with orthogonal signal division multiplexing (OSDM) to achieve …

Experimental demonstration on long-range time-reversal multiple-input/multiple-output underwater acoustic communication over tens of kbps in 12.5 km range

Y Kida, M Deguchi, T Shimura - Japanese Journal of Applied …, 2022 - iopscience.iop.org
In this paper, the adaptive time reversal (ATR) technique combined with a single channel
decision feedback equalizer (DFE) is applied to an at-sea experiment of the underwater …

Underwater acoustic communication using orthogonal signal division multiplexing with windowing

Y Tabata, T Ebihara, H Ogasawara… - Japanese Journal of …, 2022 - iopscience.iop.org
Underwater acoustic (UWA) communication is an essential technology that supports
underwater surveys by transmitting images and movies wirelessly. However, UWA …

Mobile underwater acoustic communication with orthogonal signal division multiplexing under inter-carrier interference larger than a guardband

Y Tabata, T Ebihara, H Ogasawara… - Japanese Journal of …, 2021 - iopscience.iop.org
Underwater acoustic (UWA) communication is a key technology providing wireless
communication, but using UWA channels is challenging due to the existence of large …

Field testing of underwater acoustic communication using Doppler-resilient orthogonal signal division multiplexing in coastal area of Suruga Bay

T Ebihara, H Ogasawara, K Mizutani… - Japanese Journal of …, 2019 - iopscience.iop.org
Mobile underwater acoustic (UWA) communication is still challenging, since the mobile
UWA channel is characterized by severe delay and Doppler spreads. In this paper, we …

A planar acoustic transducer for near field acoustic communication using evanescent wave

A Fujii, N Wakatsuki, K Mizutani - Japanese Journal of Applied …, 2014 - iopscience.iop.org
A planar acoustic transducer for near field acoustic communication using evanescent wave
is proposed. We focused on that the evanescent wave decays away with distance from …