Article
Multidisciplinary Sciences
Jeanette B. Moss, James P. Tumulty, Eva K. Fischer
Summary: The emergence of complex social interactions plays a vital role in the diversification of communication systems. Parental care is an important social context to study the evolution of novel signals, and anuran amphibians provide a classic model for understanding acoustic communication. In this study, the egg-feeding calls of the biparental poison frog were characterized and compared to advertisement and courtship calls. The results showed that egg-feeding calls had both similarities and unique properties compared to other calls, suggesting they involve a context-dependent parenting response.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Acoustics
Yunjiang Zhao, Gang Qiao, Songzuo Liu, Yuriy Zakharov, Niaz Ahmed
Summary: IBFD underwater acoustic communication can improve the throughput of UWA communication networks. This paper focuses on SI channel modeling and its importance for SI cancellation in IBFD modems. The proposed model is validated through experimental and simulation results for SLI and SMI in underwater vertical channels.
Article
Multidisciplinary Sciences
Slade Allen-Ankins, Lin Schwarzkopf
Summary: The acoustic niche hypothesis suggests that vocal species should evolve to partition acoustic space to avoid interference with breeding signals. This study uses a continental-scale dataset collected by citizen scientists to show that frogs do partition acoustic space.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Electrical & Electronic
Xuefeng Zhong, Zilong Jiang, Fangjiong Chen, Xiaowu Zhu, Ming Tao
Summary: In this article, the throughput performance of time-slotted underwater acoustic sensor networks (UASNs) with guard time is investigated. The probability distributions of the arrival time of interfering packets and the packet overlap duration are derived based on the geographical node distribution. The expressions of the probability density functions (pdfs) of the signal-to-interference-plus-noise ratio (SINR), as well as the outage probability and normalized throughput for a typical link between two nodes, are obtained. The results show that properly selected guard time length can increase the throughput of time-slotted networks compared to those without guard time. Simulation results validate the theoretical findings and illustrate the interference characteristics in underwater networks.
IEEE SENSORS JOURNAL
(2023)
Article
Ecology
Haodi Zhang, Bicheng Zhu, Ya Zhou, Qiaoling He, Xiaoqian Sun, Jichao Wang, Jianguo Cui
Summary: This study investigates the effects of noise interference on female choice and male-male competition in serrate-legged small tree frogs. The results suggest that female preference is influenced by the order of impaired notes in the advertisement call, while males respond by increasing the total number of notes in noisy conditions. Additionally, males may recognize noise-impaired calls as complete advertisement calls, highlighting the complexity of acoustic communication in anurans.
ECOLOGY AND EVOLUTION
(2021)
Article
Computer Science, Hardware & Architecture
Jonathan Oostvogels, Fan Yang, Sam Michiels, Danny Hughes
Summary: Latency-sensitive applications for the Internet of Things often require performance guarantees that contemporary wireless networks fail to offer. This research introduces a new networking paradigm called symbol-synchronous bus, which breaks conventional networking abstractions to achieve wired bus-like performance for wireless mesh networks. A physical prototype named ZERO-WIRE confirms the potential of symbol-synchronous buses in delivering high-performance wireless mesh networks.
COMMUNICATIONS OF THE ACM
(2023)
Article
Engineering, Electrical & Electronic
Esraa A. Makled, Octavia A. Dobre
Summary: Wireless underwater acoustic networks play a significant role in civilian and military applications, but they are limited by multiple reflections, dispersion, and long propagation delay. Researchers have proposed solutions such as full-duplex, relay assistance, and non-orthogonal multiple access to improve the system rate. Power optimization is crucial due to the power limitation of the devices. Protecting the network against eavesdropping is essential for ensuring communication confidentiality.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Environmental Sciences
Yinheng Lu, Xin Qing, Chenlu Yang, Yunjiang Zhao, Songwen Wu, Gang Qiao
Summary: This paper proposes a spatial-digital joint self-interference cancellation (SDSIC) method for in-band full-duplex underwater acoustic communication (IBFD-UWAC). The method overcomes the problem of interference in IBFD-UWAC systems by performing spatial self-interference cancellation (SSIC) and digital self-interference cancellation (DSIC). Simulations show that the proposed method significantly reduces self-interference signal power and improves signal-to-interference ratio.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Computer Science, Theory & Methods
Hongxiao Gan, Jinglan Zhang, Michael Towsey, Anthony Truskinger, Debra Stark, Berndt J. van Rensburg, Yuefeng Li, Paul Roe
Summary: This study aims to recognize frog choruses using false-colour spectrograms and machine learning algorithms, providing a useful solution for improving long-term acoustic monitoring efficiency. Acid frogs are a group of endemic frogs sensitive to habitat change and competition, with the Wallum Sedgefrog being the most threatened species. Monitoring the calling behaviors of these species is essential for management and protection, and automated acoustic recognition methods are in high demand for efficiently identifying target species.
FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE
(2021)
Article
Acoustics
Ge Wei, Jia Yizhen, Han Xiao, Zhang Xiao, Tong Wentao
Summary: In this paper, a novel algorithm for joint channel, interference, and symbol estimation within single-carrier systems is introduced. The algorithm utilizes variational Bayesian inference framework and effectively models complex posterior probabilities using multi-parameter probability distributions, enabling maximum a posteriori estimation and interference elimination.
Article
Acoustics
Wentao Tong, Wei Ge, Xiao Han, Jingwei Yin
Summary: This paper proposes an iterative subblock-based receiver algorithm to address the issue of inter-frequency interference in underwater acoustic communication caused by time-variant channels. The algorithm divides each time-varying block into multiple quasi-static subblocks and uses a Kalman filter to track smoothly variant channels between adjacent subblocks, leading to better equalization.
Article
Zoology
Marcus Thadeu T. Santos, Izabela M. Barata, Rodrigo B. Ferreira, Celio F. B. Haddad, Marcos Gridi-Papp, Thiago R. de Carvalho
Summary: The genus of bromeligenous frogs, Crossodactylodes, is primarily voiceless but recent studies have found vocal sounds in some species. Vocalisations are described as creaking, chirp and squeak calls, which are produced at the water-air interface inside bromeliads. The absence of middle ear elements in Crossodactylodes frogs suggests that extratympanic pathways may be the main auditory route for these specialized leptodactylids.
BIOACOUSTICS-THE INTERNATIONAL JOURNAL OF ANIMAL SOUND AND ITS RECORDING
(2022)
Article
Environmental Sciences
Yuehai Zhou, Feng Tong, Xiaoyu Yang
Summary: This paper proposes a new framework for underwater acoustic MIMO communication, which enhances communication performance through CoI cancellation. The effectiveness and merits of the proposed method are demonstrated in a sea trial experiment, showing higher output SNR and lower parameter sensitivity compared to traditional methods.
Article
Computer Science, Hardware & Architecture
Jiani Guo, Shanshan Song, Jun Liu, Lei Wan, Yan Zhao, Guangjie Han
Summary: This article proposes a novel MC-COMA-based cross-layer MAC scheme, called MCI-MAC, for mobile UANs. By dynamically allocating spread spectrum sequences and using an optimal channel selection algorithm, it improves the communication efficiency and network throughput in mobile UANs.
Article
Ecology
Alannah Filer, Lara S. Burchardt, Berndt J. van Rensburg
Summary: Male frog advertisement calls are species-specific vocalizations used to attract females for breeding, but environmental or biological sounds could overlap these calls causing signal confusion and affecting female decision-making. This study found that wallum sedgefrogs and eastern sedgefrogs significantly altered their calling behavior when exposed to each other, indicating acoustic competition in shared habitats.
ECOLOGY AND EVOLUTION
(2021)