Orthogonal projection and distributed compressed sensing based impulsive noise estimation for underwater acoustic OSDM communication

Y Zhou, R Wang, X Yang, F Tong - IEEE Internet of Things …, 2023 - ieeexplore.ieee.org
Orthogonal signal division multiplexing (OSDM) is an emerging method for Internet of
Underwater Things (IoUT) networks. The impulsive noise, the carrier frequency offset (CFO) …

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 …

Enhancing azimuth estimation in low-resolution underwater acoustic lens systems for advanced communication and positioning

Y Sato, T Ebihara, N Urasaki, K Mizutani… - Japanese Journal of …, 2024 - iopscience.iop.org
Here we aimed to enhance azimuth estimation to accurately locate a communication
partner's position by utilizing a low-resolution underwater acoustic lens system for …

Measurement of distance and speed between transmitter and receiver using the propagation time of underwater acoustic communication signals with orthogonal …

R Ishijima, T Ebihara, N Wakatsuki… - Japanese Journal of …, 2024 - iopscience.iop.org
This paper proposes a procedure for measuring transmitter–receiver (Tx–Rx) distance using
acoustic communication signals to realize communication and positioning underwater with …

Application of adaptive digital down-conversion to underwater acoustic communication with nonuniform Doppler shift

M Deguchi, Y Kida, Y Watanabe… - Japanese Journal of …, 2020 - iopscience.iop.org
In underwater acoustic communication, nonuniform Doppler shift can severely degrade
demodulation performance. Nonuniform Doppler shift causes nonuniform phase shifts and …

Investigation of Characteristics of Underwater Acoustic Channel and Quality of Underwater Acoustic Communication in Line-of-Sight and Non-Line-of-Sight …

T Waki, Y Hara, T Ebihara, N Wakatsuki… - Journal of Signal …, 2023 - jstage.jst.go.jp
抄録 Underwater acoustic (UWA) communication is an essential technology for networking
underwater sensors and drones to support maritime activities. However, real-time data …

Investigation of the Variability Characteristics of Sound Waves Reflected on the Sea Surface Considering Surface Wavelength

T TSUKUI, S HIRATA, H HACHIYA - The Journal of the Marine …, 2023 - jstage.jst.go.jp
Many kinds of hydroacoustic devices are used in the field of ocean development of
resources and observations. The effects of sound reflection from the sea surface are often …