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 …

Underwater acoustic communication with an orthogonal signal division multiplexing scheme in doubly spread channels

T Ebihara, K Mizutani - IEEE Journal of Oceanic Engineering, 2013 - ieeexplore.ieee.org
Underwater acoustic (UWA) communication is an ongoing challenge because of the heavy
time spread by multipath and Doppler spreads. In this paper, we propose a UWA …

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 …

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 …

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 …

Improvement of power efficiency for underwater acoustic communication using orthogonal signal division multiplexing over multiple transducers

T Ebihara - Japanese Journal of Applied Physics, 2013 - iopscience.iop.org
In underwater acoustic (UWA) communication, power efficiency is one of the important
characteristics. This paper is about multistream transmission using orthogonal signal …

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 …

Underwater acoustic communication using orthogonal signal division multiplexing scheme with time diversity

T Ebihara, H Ogasawara… - Japanese Journal of …, 2016 - iopscience.iop.org
In this paper, an underwater acoustic (UWA) communication scheme for mobile platforms is
proposed. The proposed scheme is based on the orthogonal signal division multiplexing …