Suppression of effects of Doppler shifts of multipath signals in underwater acoustic communication

M Deguchi, Y Kida, T Shimura - Acoustical Science and Technology, 2022 - jstage.jst.go.jp
In underwater acoustic communication, the Doppler shift can severely degrade
demodulation performance. In addition, multipath signals can have the Doppler shifts that …

Study on Doppler effects estimate in underwater acoustic communication

X Zhang, X Han, J Yin, X Sheng - Proceedings of Meetings on …, 2013 - pubs.aip.org
The Doppler effects is an important reason of the signal distortion generated in the mobile
communication. Especially in the underwater acoustic channel, for the propagation velocity …

An underwater acoustic OFDM communication system based on cyclic shift keying and chirp spread spectrum

Y Xiang, S Chen, J Lin, Y Zhan, G Fang… - OCEANS 2018 MTS …, 2018 - ieeexplore.ieee.org
Because of the limited bandwidth in underwater acoustic communication, the OFDM
technology has been widely studied in recent years in order to achieve high bandwidth …

[引用][C] MIMO Systems using OFDM in Underwater Communications

AFA Oliveira, ER Vale, JC Dal Bello - IOSR Journal of Electronics and …, 2014

Orthogonal Time Frequency Space Modulation: Analysis in Noisy Underwater Acoustic Channels

D Varshney, M Agrawal… - … Symposium on Ocean …, 2023 - ieeexplore.ieee.org
It is prominent that underwater acoustic channel has inherently dispersive characteristics for
the communication due to multipath, relative mobility of hydrophones, small-large scale …

A 32 kHz bandwidth, 8 branch diversity underwater acoustic OFDM communication system

Y Onna, T Suzuki, H Yamada… - 2018 OCEANS-MTS …, 2018 - ieeexplore.ieee.org
This paper describes a 32kHz bandwidth underwater acoustic Orthogonal Frequency
Division Multiple Access (OFDM) communication system to transmit higher definition image …

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 DSP implementation of OFDM acoustic modem

H Yan, S Zhou, ZJ Shi, B Li - Proceedings of the 2nd Workshop on …, 2007 - dl.acm.org
The success of multicarrier modulation in the form of OFDM in radio channels illuminates a
path one could take towards high-rate underwater acoustic communications, and recently …

Error control method for OFDM-MFSK underwater acoustic communication.

GAO Tan, LYU Chengcai… - Systems Engineering & …, 2022 - search.ebscohost.com
Orthogonal frequency division multiplexing multiple frequency shift keying (OFDM-MFSK) is
a promising modulation mode in low cost underwater acoustic (UWA) communication for its …

Shallow water experiment of OFDM underwater acoustic communications

I Kochańska, JH Schmidt, J Marszal - Archives of Acoustics, 2020 - acoustics.ippt.gov.pl
The large variability of communication properties of underwater acoustic channels, and
especially the strongly varying instantaneous conditions in shallow waters, is a challenge for …