Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.3
2.6
Journals
Electronics
Special Issues
New Advances in Underwater Communication Systems
share announcement

New Advances in Underwater Communication Systems

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Microwave and Wireless Communications".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 3497

Special Issue Editors

Prof. Dr. Jaehak Chung

E-Mail Website
Guest Editor
Electronics Engineering, Inha University, Incheon 22212, Republic of Korea
Interests: underwater communications; resource managements underwater communications; machine learning; etc.
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Hojun Lee

E-Mail Website
Guest Editor
Information and Communication Engineering, Hoseo University, Asan 31499, Republic of Korea
Interests: underwater communications; source localizations; direction-of-arrival estimation; machine learning

Special Issue Information

Dear Colleagues,

Underwater acoustic communications (UWACs) play significant roles in diverse sectors such as underwater ocean exploration, marine research, environmental monitoring, and military applications like submarine communications. Academia and industries have conducted research and development (R&D) in UWACs to enhance marine innovations intelligently. However, the unique characteristics of underwater environments pose major obstacles to the development of wireless communication and networking systems due to the hostile environment, strong signal attenuation, multipath dispersion, Doppler shift, mobility, link and topology dynamics, etc. In recent times, both academia and industry have made notable efforts to overcome these challenges. Thus, this Special Issue aims to showcase the latest findings, developments, and reviews in the field of UWACs while providing new ideas and technologies to drive further R&D in UWACs. This Special Issue's scope encompasses but is not restricted to:

  • Underwater channel modeling, estimation and characterization;
  • Underwater ranging, localization and tracking;
  • Underwater surveillance and monitoring;
  • Underwater network optimization and resource allocation;
  • Underwater covert communication;
  • Machine/deep learning-based underwater communication;
  • Underwater Internet of Things (UIoT).

Prof. Dr. Jaehak Chung
Prof. Dr. Hojun Lee
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electronics is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • underwater channel modeling, estimation and characterization
  • underwater ranging, localization and tracking
  • underwater surveillance and monitoring
  • underwater network optimization and resource allocation
  • underwater covert communication
  • machine/deep learning-based underwater communication
  • underwater Internet of Things (UIoT)

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

33 pages, 9060 KiB  
Article
A Q-Learning-Based Approach to Design an Energy-Efficient MAC Protocol for UWSNs Through Collision Avoidance
by Qiao Gang, Wazir Ur Rahman, Feng Zhou, Muhammad Bilal, Wasiq Ali, Sajid Ullah Khan and Muhammad Ilyas Khattak
Electronics 2024, 13(22), 4388; https://doi.org/10.3390/electronics13224388 - 8 Nov 2024
Viewed by 426
Abstract
Deploying and effectively utilizing wireless sensor networks (WSNs) in underwater habitats remains a challenging task. In underwater wireless sensors networks (UWSNs), the availability of a continuous energy source for communicating with nodes is either very costly or is prohibited due to the marine [...] Read more.
Deploying and effectively utilizing wireless sensor networks (WSNs) in underwater habitats remains a challenging task. In underwater wireless sensors networks (UWSNs), the availability of a continuous energy source for communicating with nodes is either very costly or is prohibited due to the marine life law enforcement agencies. So, in order to address this issue, we present a Q-learning-based approach to designing an energy-efficient medium access control (MAC) protocol for UWSNs through collision avoidance. The main goal is to prolong the network’s lifespan by optimizing the communication methods, specifically focusing on improving the energy efficiency of the MAC protocols. Factors affecting the energy consumption in communication are adjustments to the interference ranges, i.e., changing frequencies repeatedly to obtain optimal communication; data packet retransmissions in case of a false acknowledgment; and data packet collision occurrences in the channel. Our chosen protocol stands out by enabling sensor (Rx) nodes to avoid collisions without needing extra communication or prior interference knowledge. According to the results obtained through simulations, our protocol may increase the network’s performance in terms of network throughput by up to 23% when compared to benchmark protocols depending on the typical traffic load. It simultaneously decreases end-to-end latency, increases the packet delivery ratio (PDR), boosts channel usage, and lessens packet collisions by over 38%. All these gains result in minimizing the network’s energy consumption, with a proportional gain. Full article
(This article belongs to the Special Issue New Advances in Underwater Communication Systems)
►▼ Show Figures

Figure 1

16 pages, 3839 KiB  
Article
Hybrid Duplex Medium Access Control Protocol for Tsunami Early Warning Systems in Underwater Networks
by Sung Hyun Park, Ye Je Choi and Tae Ho Im
Electronics 2024, 13(21), 4288; https://doi.org/10.3390/electronics13214288 - 31 Oct 2024
Viewed by 515
Abstract
Tsunamis are devastating natural phenomena that cause extensive damage to both human life and infrastructure. To mitigate such impacts, tsunami early warning systems have been deployed globally. South Korea has also initiated a project to install a tsunami warning system to monitor its [...] Read more.
Tsunamis are devastating natural phenomena that cause extensive damage to both human life and infrastructure. To mitigate such impacts, tsunami early warning systems have been deployed globally. South Korea has also initiated a project to install a tsunami warning system to monitor its surrounding seas. To ensure reliable warning decisions, various types of data must be combined, but efficiently transmitting heterogeneous data poses a challenge due to the unique characteristics of underwater acoustic communication. Therefore, this paper proposes a Hybrid Duplex Medium Access Control (HDMAC) protocol designed for a tsunami warning system, with a specific focus on heterogeneous data transmission. HDMAC efficiently handles both seismic and environmental data by utilizing hybrid duplexing, which combines frequency duplex for seismic data with time duplex for environmental data. The protocol addresses the distinct transmission requirements for each data type by optimizing channel utilization through a group Automatic Repeat request (ARQ) scheme and packet size adjustment. Theoretical analysis predicts that HDMAC can achieve a channel utilization of up to 0.91 in smaller networks and 0.64 in larger networks. HDMAC is validated through simulations, and the simulation results closely match these predictions. The simulation results demonstrate the efficiency of HDMAC in supporting real-time submarine earthquake monitoring systems. Full article
(This article belongs to the Special Issue New Advances in Underwater Communication Systems)
►▼ Show Figures

Figure 1

17 pages, 4225 KiB  
Article
Z-OFDM: A New High-Performance Solution for Underwater Acoustic Communication
by Haitao Su, Jiaxuan Chen, Angdi Li, Hongzhi Hu and Cuifeng Xu
Electronics 2024, 13(17), 3543; https://doi.org/10.3390/electronics13173543 - 6 Sep 2024
Viewed by 669
Abstract
This paper presents Z-OFDM, a high-performance solution for underwater acoustic communication. Traditional underwater orthogonal frequency division multiplexing (OFDM) systems suffer from spectrum leakage and distortion due to the narrowband nature of underwater acoustic signals and the picket fence effect of the fast Fourier [...] Read more.
This paper presents Z-OFDM, a high-performance solution for underwater acoustic communication. Traditional underwater orthogonal frequency division multiplexing (OFDM) systems suffer from spectrum leakage and distortion due to the narrowband nature of underwater acoustic signals and the picket fence effect of the fast Fourier transform (FFT). Z-OFDM addresses these issues by integrating zoom-fast Fourier transform (ZoomFFT) with OFDM and redesigning the modulator and demodulator to replace the conventional FFT. This integration enhances spectral resolution, resulting in higher channel capacity, improved Signal to Interference plus Noise Ratio (SINR), and reduced Bit Error Rate (BER). Computer simulations using underwater acoustic channels from Fuxian Lake and Wuyuan Bay demonstrate that the Z-OFDM system achieves a 6 dB gain compared to conventional OFDM systems at a BER of 10−3. These results demonstrate the effectiveness of Z-OFDM in overcoming the limitations of traditional FFT-based OFDM systems in underwater environments. Full article
(This article belongs to the Special Issue New Advances in Underwater Communication Systems)
►▼ Show Figures

Figure 1

15 pages, 5638 KiB  
Article
Underwater Biomimetic Covert Acoustic Communications Mimicking Multiple Dolphin Whistles
by Yongcheol Kim, Hojun Lee, Seunghwan Seol, Bonggyu Park and Jaehak Chung
Electronics 2023, 12(19), 3999; https://doi.org/10.3390/electronics12193999 - 22 Sep 2023
Cited by 2 | Viewed by 1141
Abstract
This paper presents an underwater biomimetic covert acoustic communication system that achieves high covertness and a high data rate by mimicking dolphin group whistles. The proposed method uses combined time–frequency shift keying modulation with continuous varying carrier frequency modulation, which mitigates the interference [...] Read more.
This paper presents an underwater biomimetic covert acoustic communication system that achieves high covertness and a high data rate by mimicking dolphin group whistles. The proposed method uses combined time–frequency shift keying modulation with continuous varying carrier frequency modulation, which mitigates the interference between two overlapping multiple whistles while maintaining a high data rate. The data rate and bit error rate (BER) performance of the proposed method were compared with conventional underwater covert communication through an additive white Gaussian noise channel, a modeled underwater channel, and practical ocean experiments. For the covertness test, the similarity of the proposed multiple whistles was compared with the real dolphin group whistles using the mean opinion score test. As a result, the proposed method demonstrated a higher data rate, better BER performance, and large covertness to the real dolphin group whistles. Full article
(This article belongs to the Special Issue New Advances in Underwater Communication Systems)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop