Results 201 to 210 of about 873,936 (270)
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2020
Underwater communications refer to wireless techniques for sending and receiving data below water. Messages can be transmitted either point to point or through a network of multiple nodes. Nodes can be mobile (e.g., underwater vehicles, autonomous or remotely operated) and/or static (e.g., submerged buoys).
A. Caiti, A. Munafo', R. Petroccia
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Underwater communications refer to wireless techniques for sending and receiving data below water. Messages can be transmitted either point to point or through a network of multiple nodes. Nodes can be mobile (e.g., underwater vehicles, autonomous or remotely operated) and/or static (e.g., submerged buoys).
A. Caiti, A. Munafo', R. Petroccia
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Synchronization techniques for underwater acoustic communications
International Journal of Communication Systems, 2023Underwater acoustic channel is a challenging medium for communication due to the presence of significant multipath, high noise, frequency‐dependent propagation loss, and high and non‐uniform Doppler spread.
T. P. S. Babu +2 more
semanticscholar +1 more source
Wireless Underwater Communications
Wireless Personal Communications, 2012The depths of the oceans have a high potential for future industrial development and applications. Robotic autonomous systems will greatly depend on a reliable communications channel with operators and equipment either performing joint operations or on the surface. However, communications must face harsh conditions that hinder the performance.
J. Poncela, M. C. Aguayo, P. Otero
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OTFS underwater acoustic communications based on passive time reversal
Applied Acoustics, 2022Orthogonal time-frequency-space (OTFS) is a new two-dimensional (2D) modulation technique that offers reliable communications over time-varying channels.
Lianyou Jing +5 more
semanticscholar +1 more source
A Reinforcement-Learning-Based Beam Adaptation for Underwater Optical Wireless Communications
IEEE Internet of Things Journal, 2022Underwater optical wireless communications (UOWCs) have recently appeared as an attractive solution for many applications, such as remote controlling and sensing due to its advantages, such as high transmission rate, ultrawide bandwidth, and low latency.
I. Romdhane, Georges Kaddoum
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Underwater acoustic communications
Proceedings of Electro/International 1995, 2002In recent years, underwater acoustic (UWA) communications have received much attention as their applications are beginning to shift from military towards commercial. UWA communications are made difficult by the combined effect of multipath propagation and high temporal and spatial variability of the channel conditions.
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IEEE Transactions on Communications, 2022
A joint energy and correlation detection aided orthogonal frequency division multiplexing differential chaos shift keying (JECD-OFDM-DCSK) system is presented in this paper, where the reference and information-bearing signals of JECD-OFDM-DCSK are ...
Xiangming Cai +3 more
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A joint energy and correlation detection aided orthogonal frequency division multiplexing differential chaos shift keying (JECD-OFDM-DCSK) system is presented in this paper, where the reference and information-bearing signals of JECD-OFDM-DCSK are ...
Xiangming Cai +3 more
semanticscholar +1 more source
Underwater communication system.
The Journal of the Acoustical Society of America, 2010When a pressure wave hits the sea bottom, or another object, reflected signal is transmitted back and is detected by the system. Transmission underwater is limited by frequency and other causes. Information lost can be measured in parameters like range, accuracy, and reliability. The sound radiated from a source is propagated in the water.
Carlos Barroeta +2 more
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Channel Prediction Using Adaptive Bidirectional GRU for Underwater MIMO Communications
IEEE Internet of Things JournalAs the Internet of Things (IoT) continues to expand and reshape our world, new vertical application scenarios have emerged, such as underwater communications, leading to increased interest in academia and industries.
Xin Hu +4 more
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Underwater wireless optical communications links: perspectives, challenges and recent trends
Journal of optical communications, 2022Underwater wireless optical communication (UOWC) systems have lately garnered a significant amount of attention for both academic purposes and trial applications. Although the idea is not new, the fact that seawater has a smaller window of absorption for
Aisha S. Mohammed +3 more
semanticscholar +1 more source