Results 31 to 40 of about 5,112,732 (131)

Environmental-friendly underwater acoustic communication and networks [PDF]

, 2012
Intense harvesting of ocean resources extended exploitation activities to previously unexplored open ocean areas, to greater ocean depths and to remote polar regions. Such activities include, but are not limited to, energy, geology and fisheries.
Jesus, S. M.
core   +1 more source

Multiuser chirp modulation for underwater acoustic channel based on VTRM

International Journal of Naval Architecture and Ocean Engineering, 2017
In this paper, an ascheme is proposed for multiuser underwater acoustic communication by using the multi-chirp rate signals. It differs from the well known TDMA (Time Division Multiple Access), FDMA (Frequency Division Multiple Access) or CDMA (Code ...
Fei Yuan, Qian Wei, En Cheng
doaj   +1 more source

A new joint channel equalization and estimation algorithm for underwater acoustic channels

EURASIP Journal on Wireless Communications and Networking, 2017
Underwater acoustic channel (UAC) is one of the most challenging communication channels in the world, owing to its complex multi-path and absorption as well as variable ambient noise.
Bo Li, Hongjuan Yang, Gongliang Liu, Xiyuan Peng   +3 more
doaj   +1 more source

Measuring acoustic habitats [PDF]

, 2015
NDM was part-funded by an EPSRC Doctoral Training Award (No. EP/P505399/1). MPJ and PLT were supported by Marine Alliance for Science and Technology Scotland (MASTS) and MPJ by a Marie Curie CIG Award.Many organisms depend on sound for communication ...
Nathan D. Merchant, Matthew J. Witt, Tyack, P.L., Blondel, Philippe, Philippe Blondel, Witt, Matthew J., Johnson, Mark P., Merchant, Nathan D., Merchant, N.D., Parks, S.E., Kurt M. Fristrup, Susan E. Parks, Fristrup, K.M., Witt, M.J., Tyack, Peter L., Parks, Susan E., Mark P. Johnson, Blondel, P., Fristrup, Kurt M., Johnson, M.P., Peter L. Tyack, Hatta, Arief   +21 more
core   +1 more source

Adaptive modulation and coding in underwater acoustic communications: a machine learning perspective

EURASIP Journal on Wireless Communications and Networking, 2020
The increasing demand for exploring and managing the vast marine resources of the planet has underscored the importance of research on advanced underwater acoustic communication (UAC) technologies.
Lihuan Huang, Qunfei Zhang, Weijie Tan, Yue Wang, Lifan Zhang, Chengbing He, Zhi Tian   +6 more
doaj   +1 more source

Energy-Efficient Resource Allocation for Mission-Critical Applications in Underwater Acoustic Networks

IEEE Access
The Internet of Underwater Things (IoUT) has emerged as a vital technological domain, significantly advancing underwater exploration and communication capabilities.
Walid K. Hasan, Iftekhar Ahmad, Quoc Viet Phung, Yue Rong, Haitham Khaled, Daryoush Habibi   +5 more
doaj   +1 more source

Advances in Software‐Defined Technologies for Underwater Acoustic Sensor Networks: A Survey

Journal of Sensors, Volume 2019, Issue 1, 2019., 2019
Underwater Acoustic Sensor Networks (UASNs) are an important technical means to explore the ocean realm. However, most UASNs rely on hardware infrastructures with poor flexibility and versatility. The systems typically deploy in a redundant manner, which not only leads to waste but also causes serious signal interference due to multiple noises in ...
Jianping Wang, Dechuan Kong, Wei Chen, Shujing Zhang, Marko Beko   +4 more
wiley   +1 more source

Parallel Resampling of OFDM Signals for Fluctuating Doppler Shifts in Underwater Acoustic Communication

Journal of Electrical and Computer Engineering, Volume 2018, Issue 1, 2018., 2018
Reliable underwater acoustic communication is demanded for autonomous underwater vehicles (AUVs) and remotely operated underwater vehicles (ROVs). Orthogonal frequency‐division multiplexing (OFDM) is robust with multipath interference; however, it is sensitive to Doppler.
Shingo Yoshizawa, Takashi Saito, Yusaku Mabuchi, Tomoya Tsukui, Shinichi Sawada, Jit S. Mandeep   +5 more
wiley   +1 more source

Design and Development of an acoustic positioning system for a cubic kilometre underwater neutrino telescope [PDF]

, 2012
En los últimos años los telescopios submarinos de neutrinos han cobrado una mayor importancia ya que consisten en un nuevo y único instrumento para observar el Universo.
Larosa ., Giuseppina
core   +1 more source

Deep Learning Based Design of Binary Signalling for Optical Wireless Communication Systems With 2D Receiver

IET Optoelectronics, Volume 19, Issue 1, January/December 2025.
We apply a deep learning (DL) technique to binary signalling design for optical wireless communication (OWC) system with a 2D LED transmitter array and an arrayed 2D receiver. It is demonstrated that the DL‐based signalling design algorithm is feasible for OWC system, considering physical channel effect. ABSTRACT Recently, deep learning (DL) techniques
Yongwoon Hwang, Chung Ghiu Lee, Soeun Kim   +2 more
wiley   +1 more source